LM2575 Datasheet PDF – 1A Step-Down Voltage Regulator

Part Number : LM2575, LM2575TADJ, LM2575T-5.0

Function : 52kHz Simple 1A Step-Down Voltage Regulator

Package : TO-220 5 Pin, DIP 16 Pin

Manufacturers : National Semiconductor, Micrel


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 fixed-frequency oscillator.


Pinouts :

LM2575 datasheet


1. 3.3V, 5V, 12V, 15V, and adjustable output versions
2. Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions
3. Guaranteed 1A output current
4. Wide input voltage range, 40V up to 60V for HV version
5. Requires only 4 external components
6. 52 kHz fixed frequency internal oscillator
7. TTL shutdown capability, low power standby mode
8. High efficiency
9. Uses readily available standard inductors


1. Simple high-efficiency step-down (buck) regulator
2. Efficient pre-regulator for linear regulators
3. On-card switching regulators
4. Positive to negative converter (Buck-Boost)


LM2575 Datasheet PDF Download

LM2575 pdf

Other data sheets within the file : LM2575-3.3BN, LM2575-3.3BT, LM2575-3.3BU, LM2575-5.0BN