RequiredUC3842AN
Category: Power Switch Ics
Description： The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
Price range ($)
0.09779 1.25730
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UC3842AN
UC3842AN has several brands around the world that may have alternate names for UC3842AN due to regional differences or acquisition. UC3842AN may also be known as the following names:
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Description
UC3842AN
Stock:33970 |
St/on 03+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.82920 US $0.74628 ≥5: US $0.62190 US $0.55971 ≥10: US $0.43533 US $0.39180 ≥20: US $0.41460 US $0.37314 ≥50: US $0.37314 US $0.33583 ≥100: US $0.36278 US $0.32650 ≥200: US $0.35241 US $0.31717 ≥500: US $0.34204 US $0.30784 ≥1000: US $0.33168 US $0.29851
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Inquiry
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UC3842AN
Stock:999999 |
On Semiconductor 17+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.25146 US $0.22631
More:
Inquiry
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UC3842AN
Stock:673 |
Motorola 06+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.33528 US $0.30175
More:
Inquiry
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UC3842AN
Stock:24 |
On Semiconductor 9952+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.35204 US $0.33092
More:
Inquiry
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UC3842AN
Stock:1843 |
On Semiconductor 16+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.22352 US $0.20117
More:
Inquiry
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UC3842AN
Stock:37660 |
Motorola 96+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $1.25730 US $1.13157 ≥5: US $0.83820 US $0.75438 ≥10: US $0.75438 US $0.67894 ≥20: US $0.73343 US $0.66008 ≥50: US $0.71247 US $0.64122 ≥100: US $0.69152 US $0.62236 ≥200: US $0.67056 US $0.60350 ≥500: US $0.66218 US $0.59596 ≥1000: US $0.64961 US $0.58464
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Inquiry
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UC3842AN
Stock:351 |
Moto/uc 00+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.44704 US $0.40234
More:
Inquiry
|
UC3842AN
Stock:40 |
On Semiconductor 0213 |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.29337 US $0.26403
More:
Inquiry
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UC3842AN
Stock:577 |
On Semiconductor 05+/95+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.19558 US $0.17602
More:
Inquiry
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UC3842AN
Stock:26 |
On Semiconductor 15+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.09779 US $0.09192
More:
Inquiry
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UC3842AN
Stock:145 |
Motorola 9949+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.11735 US $0.11031
More:
Inquiry
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UC3842AN
Stock:332 |
On Semiconductor 03+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.39116 US $0.35204
More:
Inquiry
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UC3842AN
Stock:302 |
Motorola 00+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.39116 US $0.35204
More:
Inquiry
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UC3842AN
Stock:238 |
Motorola 90/91 |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.33528 US $0.31516
More:
Inquiry
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UC3842AN
Stock:109 |
Unitrode 9517 |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.33528 US $0.31516
More:
Inquiry
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UC3842AN
Stock:3 |
On Semiconductor 0040+ |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.44704 US $0.42022
More:
Inquiry
|
Out of stock |
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UC3842AN
Stock:30 |
Motorola 99 |
The UC3842AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V. |
≥1: US $0.41910 US $0.37719
More:
Inquiry
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Introduction:
The UC3842AN family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under-voltage lockout featuring a start-up current less than 0.5mA, a precision reference trimmed for accuracy. The output stage, suitable for driving N-Channel MOS- FETs, is low in the off-state.
Some Core Parameters:
SPECIAL FEATURES :
● Rimmed oscillator discharge current
● Latching PWM for cycle-by-cycle current limiting
● Internally trimmed reference with undervoltage lockout
● High current totem pole output under voltages lockout with hysteresis
How it Uses in the work:
Internal Block Diagram:
UC3842AN Pinout Connections:
UC3842AN Pin Functions:
● 1 pin (COMP) This pin is the Error Amplifier output and is made available for loop compensation.
● 2 pin (VFB) This is the inverting input of the Error Amplifier Circuit. It is normally connected to the switching supply power output through a resistor divider.
● 3 pin (ISENSE) A voltage proportional to inductor current is connected to this input. The PWM uses this information to terminate the output switching conduction.
● 4 pin (RT/CT) The oscillator frequency and maximum Output duty cycle are programmed by connecting resistor RT to Vref and capacitor CT to ground. The operation of 500kHz is possible.
● 5 pin (GND) This pin is the combined control circuitry and power ground.
● 6 pin (out) This output directly drives the gate of a power MOSFET. Peak currents up to 1Amper are sourced and sunk by this pin.
● 7 pin (VCC) pin This pin is the positive supply of the control IC.
● 8 pin (Vref) This is the reference output. It provides charging current for capacitor CT through resisted RT.
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