DESCRIPTION

The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regualtor(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, 15V, and an adjustable output version.

FEATURES

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

● Adjustable Version Output Voltage Range, 1.23 to 37V

+/- 4 AG10Maximum Over Line and Load Conditions

● Guaranteed 3.0A Output Current

● Wide Input Voltage Range

● Requires Only 4 External Components

● 52kHz Fixed Frequency Internal Oscillator

● TTL Shutdown Capability, Low Power Standby Mode

● High Efficiency

● Uses Readily Available Standard Inductors

● Thermal Shutdown and Current Limit Protection

● Moisture Sensitivity Level(MSL) Equals1

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