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LM2576

Texas Instruments
Part Number LM2576
Manufacturer Texas Instruments
Description 3-A Step-Down Voltage Regulator
Published Oct 24, 2019
Detailed Description LM2576, LM2576HV SNVS107G – JUNE 1999 – REVISED MARCH 2023 LM2576xx Series SIMPLE SWITCHER® Power Converter 3-A Step-Dow...
Datasheet PDF File LM2576 PDF File

LM2576
LM2576


Overview
LM2576, LM2576HV SNVS107G – JUNE 1999 – REVISED MARCH 2023 LM2576xx Series SIMPLE SWITCHER® Power Converter 3-A Step-Down Voltage Regulator 1 Features • Newer products available: – LMR51430 4.
5 to 36-V, 3-A, 500-kHz and 1.
1MHz synchronous converter – LM76003 3.
5 to 60-V, 3.
5-A, 300-kHz to 2.
2MHz synchronous converter • For faster time to market: – TLVM13630 3 to 36-V, 3-A, 200-kHz to 2.
2-MHz power module • 3.
3-V, 5-V, 12-V, 15-V, and adjustable output versions • Adjustable version output voltage range,1.
23 V to 37 V (57 V for HV version) ±4% maximum over line and load conditions • Specified 3-A output current • Wide input voltage range: 40 V Up to 60 V for HV version • Requires only four external components • 52-kHz fixed-frequency internal oscillator • TTL-shutdown capability, low-power standby mode • High efficiency • Uses readily available standard inductors • Create a custom design using the LMR33630 or LM76003 with the WEBENCH® Power Designer 2 Applications • Motor drives • Merchant network and server PSU • Appliances • Test and measurement equipment 3 Description The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load regulation.
These devices are available in fixed output voltages of 3.
3 V, 5 V, 12 V, 15 V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include fault protection and a fixed-frequency oscillator.
The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators.
It substantially reduces the size of the heat sink, and in some cases no heat sink is required.
A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers.
This feature greatly simplifies the design of switch-mode power supplies.
Other features include a ±4% tolerance o...


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