LM2576R-12

3A,12V固定输出,降压型开关稳压器

DESCRIPTION

The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regualtorbuck 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 LevelMSL Equals1

Applications

Simple High-Efficiency Step-DownBuck Regulator

Efficient Pre-Regulator for Linear Regulators

On-Card Switching Regulators

Positive to Negative ConverterBuck-Boost

Negative Step-Up Converters

Power Supply for Battery Chargers