LM2575-N

LM1575, LM2575-N, LM2575HV www.ti.com SNVS106E – MAY 1999 – REVISED APRIL 2013 LM1575/LM2575/LM2575HV SIMPLE SWITCHER® 1A Step-Down Voltage Regulator Check for Samples: LM1575, LM2575-N, LM2575HV FEATURES 1 23 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) DESCRIPTION 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 fixedfrequency oscillator. The LM2575 series offers a high-efficiency replacement fo...