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

Manufacturer: National Semiconductor, Micrel Semicondcutor




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.


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)

Other data sheets are available within the file: LM2575BN, LM2575BT, LM2575BU, 2575-3.3BT

LM2575 Datasheet PDF Download

LM2575 pdf