L4978D
Category: PMIC - Voltage Regulators - DC DC Switching Regulators
Description: The L4978D is a step-down monolithic power Switching Regulator delivering 2A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltage regulated from 3.3 to 50V cover the majority of today's applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit,
Price range ($)
0.64960 2.93370
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L4978D
L4978D has several brands around the world that may have alternate names for L4978D due to regional differences or acquisition. L4978D may also be known as the following names:
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Description
L4978D
Stock:9999 |
STMicroelectronics |
The L4978D is a step-down monolithic power Switching Regulator delivering 2A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltage regulated from 3.3 to 50V cover the majority of today's applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit, |
≥1: US $1.25730 US $1.13157 ≥5: US $0.83820 US $0.75438 ≥10: US $0.75438 US $0.67894 ≥20: US $0.73342 US $0.66008 ≥50: US $0.71247 US $0.64122 ≥100: US $0.69152 US $0.62237 ≥200: US $0.67056 US $0.60350 ≥500: US $0.66218 US $0.59596 ≥1000: US $0.64960 US $0.58464
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Inquiry
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L4978D
Stock:510 |
STMicroelectronics 10+ |
IC REG BUCK ADJUSTABLE 2A 16SOIC |
≥1: US $2.01168 US $1.81051 ≥10: US $1.76022 US $1.58420 ≥50: US $1.50876 US $1.35788 ≥100: US $1.38303 US $1.24473
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Inquiry
|
L4978D
Stock:158 |
STMicroelectronics 08/06+ |
IC REG BUCK ADJUSTABLE 2A 16SOIC |
≥1: US $1.11760 US $1.00584
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Inquiry
|
L4978D
Stock:16 |
STMicroelectronics 17+ |
The L4978D is a step-down monolithic power Switching Regulator delivering 2A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltage regulated from 3.3 to 50V cover the majority of today's applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit, |
≥1: US $0.78232 US $0.70409
More:
Inquiry
|
L4978D
Stock:60 |
STM 03 |
The L4978D is a step-down monolithic power Switching Regulator delivering 2A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltage regulated from 3.3 to 50V cover the majority of today's applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit, |
≥1: US $2.93370 US $2.64033
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Inquiry
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● UP TO 2A STEP DOWN CONVERTER
● OPERATING INPUT VOLTAGE FROM 8V TO 55V
● PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
● OUTPUT VOLTAGEADJUSTABLEFROM3.3VTO 50V
● SWITCHING FREQUENCY ADJUSTABLE UPTO 500KHz
● VOLTAGEFEEDFORWARD
● ZERO LOAD CURRENT OPERATION
● INTERNAL CURRENT LIMITING (PULSE-BY-PULSE AND HICCUP MODE)
● INHIBIT FOR ZERO CURRENT CONSUMPTION
● PROTECTIONAGAINST FEEDBACK DIS-CONNECTION
● THERMAL SHUTDOWN.SOFT START FUNCTION
DESCRIPTION
The L4978 is a step down monolithic power switching regulator delivering 2A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed.
A switching frequency up to 500KHz is achievable (the maximum power dissipation of the packages must be observed).
A wide input voltage range between 8v to 55V and output voltages regulated from 3.3V to 50V cover the majority of today's applications.
Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedfor-ward regulation,soft-start,protection against feedback loop disconnection, inhibit for zero cur-rent consumption and thermal shutdown.
The device is available in plastic dual in line, MINIDIP8 for standard assembly, and SO16Wfor SMD assembly.
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Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over 200$,Overweight will be charged separately
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