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LM2576HVS-ADJ/NOPB

TILM2576HVS-ADJ/NOPB

Texas Instruments
Buck Switching Regulator IC Positive Adjustable 1.23V 1 Output 3A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
NRND3,966 in stock
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Overview

The LM2576HVS-ADJ/NOPB is a monolithic step-down switching regulator capable of driving a 3A load with excellent line and load regulation. This high-voltage version supports input voltages up to 60V, making it suitable for applications requiring wide input ranges or high-voltage transients. The device simplifies power supply design by requiring a minimum number of external components and featuring an internal frequency compensator.

Why Choose This Part

It offers a wide input voltage range of 7V to 60V and an adjustable output down to 1.23V, providing significant design flexibility. The TO-263 package provides a compact surface-mount footprint with high thermal dissipation capabilities. Built-in safety features like cycle-by-cycle current limiting and thermal shutdown protect the circuit during fault conditions.

Applications

High-Voltage Step-Down Regulator
Efficiently converting high-voltage rails up to 60V down to lower logic levels or intermediate bus voltages.
Pre-Regulator for Linear Regulators
Used as an efficient first stage to drop high input voltages before final precision regulation by an LDO.
On-Card Switching Regulators
Providing local, high-current power distribution on PCBs where thermal management is a concern for linear alternatives.
Industrial Power Supplies
Handling unregulated DC inputs in industrial environments that experience significant voltage fluctuations.

Getting Started

To design with this part, select an inductor and Schottky catch diode rated for at least 3A and the maximum expected input voltage. Use low-ESR electrolytic or tantalum capacitors for input and output filtering to ensure stability. Refer to the Texas Instruments WEBENCH Power Designer tool for optimized component selection and layout guidelines specific to the TO-263 package.

Part of LM2596 / LM2576 Switching Regulator family » LM2576HVS

LM2576HVS Family

Part NumberDifferenceStock
LM2576HVS-5.0/NOPB 5.0/NOPB 2,039

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LMR16030S TITexas Instruments - A more modern synchronous buck converter with higher efficiency and a smaller SO-PowerPad package for space-constrained designs.