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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,
Title
DC-DC Switching Buck (Step Down) Regulator, Adjustable, 8V-55Vin, 3.3V-50Vout, 2Aout, SOIC-16
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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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10000 buyer reviews from United States
Laura Baker
Length of registration:7 years
I recently ordered an IC L4978D from your company and I am very pleased with the product. It is a high quality and reliable component that is easy to use and install. The product is well-made and the instructions are clear and concise. The product has been working perfectly in my application and I am very satisfied with the performance. I would highly recommend this product to anyone looking for a
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03/17/2023
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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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Unit Price:1.25730
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