LM2575HVT-3.3

SIMPLE SWITCHER 1A降压稳压器 SIMPLE SWITCHER 1A Step-Down Voltage Regulator

DESCRIPON

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down buck switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable

output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed frequency oscillator.

FEATURES

• 3.3V, 5V, 12V, 15V, and Adjustable Output Versions

• Adjustable Version Output Voltage Range,

– 1.23V to 37V 57V for HV Version ±4% Max Over

– Line and Load Conditions

• Specified 1A Output Current

• Wide Input Voltage Range, 40V up to 60V for HV Version

• 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

• P+ Product Enhancement Tested

APPLICATIONS

• Simple High-Efficiency Step-Down Buck Regulator

• Efficient Pre-Regulator for Linear Regulators

• On-Card Switching Regulators

• Positive to Negative Converter Buck-Boost