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LM2576T-ADJ/NOPB

TILM2576T-ADJ/NOPB

Texas Instruments
Switching Voltage Regulators 3A STEP-DOWN VLTG RE G
993 in stock
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Overview

The LM2576T-ADJ/NOPB is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. It is capable of driving a 3A load with excellent line and load regulation while operating at a fixed switching frequency of 52 kHz. As an adjustable version, it allows for an output voltage range from 1.23V to 37V.

Why Choose This Part

This regulator significantly simplifies power supply design by requiring only four external components and featuring internal frequency compensation. It includes cycle-by-cycle current limiting and thermal shutdown for robust fault protection in industrial environments.

Applications

High-Efficiency Step-Down Regulation
Used as a primary buck converter to reduce higher DC bus voltages to lower logic levels with minimal thermal overhead.
On-Card Switching Regulators
Ideal for localized power conversion on PCBs where 3A current capability is required for multiple peripherals.
Pre-Regulator for Linear Regulators
Acts as an efficient first stage to drop high input voltages before final precision regulation by an LDO.

Getting Started

Designers should consult the datasheet for the standard inductor and capacitor selection guide based on the desired output voltage and load current. Ensure the TO-220 package is properly heat-sinked for high-current applications and keep the feedback traces short to minimize noise pickup.

Part of LM2596 / LM2576 Switching Regulator family » LM2576T

LM2576T Family

Part NumberDifferenceStock
LM2576T-ADJ/LF03 LF03 1,946

Also Consider

L7805CV STMicroelectronics - A simpler 1.5A linear regulator alternative for low-noise applications where power efficiency is less critical.
TPS5430DDAR TITexas Instruments - A modern synchronous buck converter with higher efficiency and a higher 500 kHz switching frequency in a smaller SMD package.

Categories

Power Management > Switching Regulators