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LM2576

HTC
Part Number LM2576
Manufacturer HTC
Description Step-Down Switching Regulator
Published Jun 3, 2014
Detailed Description 3A, 52kHz, Step-Down Switching Regulator LM2576 FEATURES z 3.3V, 5.0V, 12V and Adjustable Output Versions z Adjustable...
Datasheet PDF File LM2576 PDF File

LM2576
LM2576

Overview
3A, 52kHz, Step-Down Switching Regulator LM2576 FEATURES z 3.
3V, 5.
0V, 12V and Adjustable Output Versions z Adjustable Version Output Voltage Range, 1.
23 to 37V +/- 4% AG10Maximum Over Line and Load Conditions z Guaranteed 3.
0A Output Current z Wide Input Voltage Range z Requires Only 4 External Components z 52kHz Fixed Frequency Internal Oscillator z TTL Shutdown Capability, Low Power Standby Mode z High Efficiency z Uses Readily Available Standard Inductors z Thermal Shutdown and Current Limit Protection z Moisture Sensitivity Level 3 for SMD packages SOP8-PP PKG TO-220 PKG TO-263 PKG APPLICATION z Simple High-Efficiency Step-Down(Buck) Regulator z Efficient Pre-Regulator for Linear Regulators z On-Card Switching Regulators z Positive to Negative Converter(Buck-Boost) z Negative Step-Up Converters z Power Supply for Battery Chargers ORDERING INFORMATION Device Marking LM2576DP-X.
X LM2576-X.
X LM2576T-X.
X LM2576-X.
X LM2576R-X.
X LM2576-X.
X Package SOP8-PP TO-220 TO-263 DESCRIPTION The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regulator (buck converter).
All circuits of this series are capable of driving a 3.
0A load with excellent line and load regulation.
These devices are available in fixed output voltages of 3.
3V, 5.
0V, 12V and an adjustable output version.
These regulators were designed to minimize the number of external components to simplify the power supply design.
Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers.
Since the LM2576 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages.
In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically.
A standard series of inductors optimized for use with the LM2576 ...


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