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PMIC - Hot Swap Controllers

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TPS2321IPW

TSSOP16

Texas Instruments

05+

The TPS2321IPW is a power distribution switch from Texas Instruments. It is a 16-pin TSSOP package and is designed for use in high-current applications. It is a single-channel, low-side switch with a

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource

≥1:

US $1.23660

US $1.11294

≥5:

US $0.82440

US $0.74196

≥10:

US $0.74196

US $0.66776

≥20:

US $0.72135

US $0.64921

≥50:

US $0.70074

US $0.63067

≥100:

US $0.68013

US $0.61212

≥200:

US $0.65952

US $0.59357

≥500:

US $0.65128

US $0.58615

≥1000:

US $0.63891

US $0.57502

From: US $0.63891

LTC4252-2IMS#PBF

MSOP

Linear

13+

The LTC4252-2IMS#PBF is a dual-channel Hot Swap controller with integrated MOSFETs from Linear Technology. It is designed to control the inrush current and prevent overvoltage and overcurrent conditio

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $4.99947

US $4.49952

≥5:

US $4.74950

US $4.27454

≥10:

US $4.49952

US $4.04957

≥20:

US $4.37454

US $3.93708

≥50:

US $4.24955

US $3.82459

≥100:

US $4.12456

US $3.71211

≥200:

US $3.99957

US $3.59962

≥500:

US $3.94958

US $3.55462

≥1000:

US $3.87459

US $3.48713

From: US $3.87459

≥1:

US $4.93200

US $4.43880

≥5:

US $4.68540

US $4.21686

≥10:

US $4.43880

US $3.99492

≥20:

US $4.31550

US $3.88395

≥50:

US $4.19220

US $3.77298

≥100:

US $4.06890

US $3.66201

≥200:

US $3.94560

US $3.55104

≥500:

US $3.89628

US $3.50665

≥1000:

US $3.82230

US $3.44007

From: US $3.82230

LM5068MM-2/NOPB

MSOP-8

National Semiconductor

11+

Description: The LM5068MM-2/NOPB is an integrated circuit (IC) designed for use in high-efficiency, low-noise, low-ripple, high-current DC/DC converters. It is a dual-channel, high-side, low-side, and

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $21.01500

US $18.91350

≥2:

US $21.01500

US $18.91350

≥5:

US $20.31450

US $18.28305

≥10:

US $20.03430

US $18.03087

≥20:

US $19.89420

US $17.90478

≥30:

US $19.61400

US $17.65260

≥50:

US $19.61400

US $17.65260

≥100:

US $19.47390

US $17.52651

≥500:

US $19.33380

US $17.40042

From: US $19.33380

MAX5911ESA

SOP-8

Maxim Integrated

06+

Description: The MAX5911ESA is a low-noise, low-dropout (LDO) linear regulator with an adjustable output voltage range of 0.8V to 5.5V. It offers fast transient response and low output noise, making i

-48V Simple Swapper Hot-Swap Switches

Utsource

≥1:

US $3.28800

US $2.95920

≥5:

US $2.19200

US $1.97280

≥10:

US $1.97280

US $1.77552

≥20:

US $1.91800

US $1.72620

≥50:

US $1.86320

US $1.67688

≥100:

US $1.80840

US $1.62756

≥200:

US $1.75360

US $1.57824

≥500:

US $1.73168

US $1.55851

≥1000:

US $1.69880

US $1.52892

From: US $1.69880

TPS24712DGSR

MSOP

Texas Instruments

2015+

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store
Inquiry price

≥1:

US $1.11760

US $1.00584

≥5:

US $0.83820

US $0.75438

≥10:

US $0.50292

US $0.45263

≥20:

US $0.48895

US $0.44006

≥50:

US $0.47498

US $0.42748

≥100:

US $0.46101

US $0.41491

≥200:

US $0.44704

US $0.40233

≥500:

US $0.44145

US $0.39730

≥1000:

US $0.43307

US $0.38976

From: US $0.43307

LTC4211IS8#TRPBF

SOP8

LT

14+

#TRPBF Description: The LTC4211 is a high side power distribution switch that can be used to control the power distribution of up to four independent loads. It features an adjustable current limit an

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $5.60400

US $5.04360

≥5:

US $5.32380

US $4.79142

≥10:

US $5.04360

US $4.53924

≥20:

US $4.90350

US $4.41315

≥50:

US $4.76340

US $4.28706

≥100:

US $4.62330

US $4.16097

≥200:

US $4.48320

US $4.03488

≥500:

US $4.42716

US $3.98444

≥1000:

US $4.34310

US $3.90879

From: US $4.34310

LTC4261CUFD-2#PBF

QFN

Linear

13+

The LTC4261CUFD-2#PBF is a high-side power switch with an integrated current sense amplifier. It is designed to provide a low-resistance, high-current path between a power supply and a load. The integ

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $11.63811

US $10.47430

≥5:

US $11.05620

US $9.95058

≥10:

US $10.47430

US $9.42687

≥20:

US $10.18334

US $9.16501

≥50:

US $9.89239

US $8.90315

≥100:

US $9.60144

US $8.64129

≥200:

US $9.31049

US $8.37944

≥500:

US $9.19410

US $8.27469

≥1000:

US $9.01953

US $8.11758

From: US $9.01953

MIC2587R-1YM

SOP8

Micrel

0525

Description: The MIC2587 is a low-side power switch with an integrated charge pump that provides a regulated gate drive voltage for the power MOSFET. Features: Low-side power switch with integrated

CTRLR HOTSWAP 1CHAN POS 8SOIC

Utsource

≥1:

US $2.74800

US $2.47320

≥5:

US $2.61060

US $2.34954

≥10:

US $2.47320

US $2.22588

≥20:

US $2.40450

US $2.16405

≥50:

US $2.33580

US $2.10222

≥100:

US $2.26710

US $2.04039

≥200:

US $2.19840

US $1.97856

≥500:

US $2.17092

US $1.95383

≥1000:

US $2.12970

US $1.91673

From: US $2.12970

≥1:

US $3.30300

US $2.97270

≥10:

US $3.11950

US $2.80755

≥100:

US $2.75250

US $2.47725

≥1000:

US $2.66075

US $2.39467

≥2500:

US $2.56900

US $2.31210

≥5000:

US $2.47725

US $2.22952

≥10000:

US $2.38550

US $2.14695

From: US $2.38550

LTC4251IS6#TRPBF

SOT-23

Linear

2013+

#TRPBF Description: The LTC4251 is a low voltage, low power, precision current monitor with an adjustable current threshold. It is designed to monitor current in a variety of applications, including

IC CTRLR HOTSWAP NEGVOLT SOT23-6

Utsource

≥1:

US $7.96920

US $7.17228

≥5:

US $7.57074

US $6.81367

≥10:

US $7.17228

US $6.45505

≥20:

US $6.97305

US $6.27574

≥50:

US $6.77382

US $6.09644

≥100:

US $6.57459

US $5.91713

≥200:

US $6.37536

US $5.73782

≥500:

US $6.29567

US $5.66610

≥1000:

US $6.17613

US $5.55852

From: US $6.17613

LTC4252-2IMS#PBF

MSOP10

Linear Technology

Hot Swap Controllers, Linear Technology Linear Technology offer a range of Hot Swap controllers providing circuit protection by limiting inrush current as well as fault isolation. They allow electronic circuit boards and cards to be inserted into live system backplanes. Hot Swap controller will sense, control and operate continuously as the boards are hot plugged in or pulled out. They can present board power monitoring via digital measurements of the current and voltage levels by integrated ADCs, accessible through I2C/SMBus interfaces. Linear Technology’s Hot Swap controllers utilise N-channel MOSFETs to control power flow, which allows a wide range of load currents and operating voltages. These devices are often used in applications such as: Server rack mount systems Distributed power systems Medical Systems, Telecom systems Set Top Boxes High side switch/circuit breakers Switchers / Routers

Utsource

≥1:

US $5.13994

US $4.62595

≥10:

US $4.85438

US $4.36894

≥100:

US $4.28328

US $3.85495

≥1000:

US $4.14050

US $3.72645

≥2500:

US $3.99773

US $3.59796

≥5000:

US $3.85495

US $3.46945

≥10000:

US $3.71218

US $3.34096

From: US $3.71218

TPS2321IPWR

TSSOP

Texas Instruments

02+

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $5.60400

US $5.04360

≥5:

US $5.32380

US $4.79142

≥10:

US $5.04360

US $4.53924

≥20:

US $4.90350

US $4.41315

≥50:

US $4.76340

US $4.28706

≥100:

US $4.62330

US $4.16097

≥200:

US $4.48320

US $4.03488

≥500:

US $4.42716

US $3.98444

≥1000:

US $4.34310

US $3.90879

From: US $4.34310

LTC4230CGN

SSOP-20

Ltnear

05+

Triple Hot Swap Controller with Multifunction Current Control

Utsource

≥1:

US $4.19100

US $3.77190

≥5:

US $3.98145

US $3.58331

≥10:

US $3.77190

US $3.39471

≥20:

US $3.66712

US $3.30041

≥50:

US $3.56235

US $3.20611

≥100:

US $3.45758

US $3.11182

≥200:

US $3.35280

US $3.01752

≥500:

US $3.31089

US $2.97980

≥1000:

US $3.24802

US $2.92322

From: US $3.24802

LTC4252-2CMS#TRPBF

MSOP10

Linear

10+

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

Utsource Original Store

≥1:

US $8.40600

US $7.56540

≥5:

US $7.98570

US $7.18713

≥10:

US $7.56540

US $6.80886

≥20:

US $7.35525

US $6.61973

≥50:

US $7.14510

US $6.43059

≥100:

US $6.93495

US $6.24146

≥200:

US $6.72480

US $6.05232

≥500:

US $6.64074

US $5.97667

≥1000:

US $6.51465

US $5.86319

From: US $6.51465

≥1:

US $4.65800

US $4.19220

≥5:

US $4.42510

US $3.98259

≥10:

US $4.19220

US $3.77298

≥20:

US $4.07575

US $3.66818

≥50:

US $3.95930

US $3.56337

≥100:

US $3.84285

US $3.45857

≥200:

US $3.72640

US $3.35376

≥500:

US $3.67982

US $3.31184

≥1000:

US $3.60995

US $3.24895

From: US $3.60995

LTC4280CUFD#PBF

QFN

Linear

13+

#PBF Description: The LTC4280CUFD#PBF is a dual power path controller with I2C interface. It is designed to provide a simple and reliable solution for managing power in systems with multiple power so

The TPS2320 and TPS2321 are dual-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2320/21 devices incorporate undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate voltage-clamp circuitry. ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50 μs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5μA. FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The other channel will run normally if not in overcurrent. In order to turn the channel back on, either the enable pin has to be toggled or the input power has to be cycled. GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15μA to each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry will generate gate-to-source voltages of 9 V-12 V across the external MOSFET transistors. IN1,

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≥1:

US $7.96637

US $7.16973

≥5:

US $7.56805

US $6.81124

≥10:

US $7.16973

US $6.45276

≥20:

US $6.97057

US $6.27351

≥50:

US $6.77141

US $6.09427

≥100:

US $6.57225

US $5.91503

≥200:

US $6.37309

US $5.73578

≥500:

US $6.29343

US $5.66409

≥1000:

US $6.17393

US $5.55654

From: US $6.17393

≥1:

US $3.69900

US $3.32910

≥5:

US $2.46600

US $2.21940

≥10:

US $2.21940

US $1.99746

≥20:

US $2.15775

US $1.94198

≥50:

US $2.09610

US $1.88649

≥100:

US $2.03445

US $1.83100

≥200:

US $1.97280

US $1.77552

≥500:

US $1.94814

US $1.75332

≥1000:

US $1.91115

US $1.72004

From: US $1.91115

ADM1070ART-REEL7

SOT23-6

ADI

04+

IC CTRL HOTSWAP -48 SOT23-6

US $1.22980

US $1.10682

From: US $1.22980
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