LM2576T-12 Datasheet PDF - Freescale

●Easy Switcher™ 3.0A Step-Down Voltage Regulator

●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 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

●Features

●•3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions

●•Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% Maximum Over Line and Load Conditions

●•Guaranteed 3.0 A Output Current

●•Wide Input Voltage Range

●•Requires Only 4 External Components

●•52 kHz Fixed Frequency Internal Oscillator

●•TTL Shutdown Capability, Low Power Standby Mode

●•High Efficiency

●•Uses Readily Available Standard Inductors

●•Thermal Shutdown and Current Limit Protection

●Applications

●•Simple High–Efficiency Step–Down (Buck) Regulator

●•Efficient Pre–Regulator for Linear Regulators

●•On–Card Switching Regulators

●•Positive to Negative Converter (Buck–Boost)

●•Negative Step–Up Converters

●•Power Supply for Battery Chargers