HLF LM2575-3.3 / 5.0 / 12 / ADJ – DC-DC Switching Regulator (TO220) Step-Down (Buck) Switching Voltage Regulator | 4 V – 36 V Input | 1 A Output | –40 °C to +125 °C | Through-Hole Package

The HLF LM2575 (TO220) is a monolithic step-down (buck) DC-DC converter capable of delivering up to 1 A of continuous output current. Designed for high efficiency and minimal external components, it offers fixed output voltages of 3.3 V, 5.0 V, 12 V, and an adjustable version (ADJ).
It integrates a fixed-frequency oscillator (52 kHz), thermal shutdown, and internal current limiting for robust and reliable operation.

Key Features:

• Function: Step-Down (Buck) Switching Regulator

• Input Voltage Range: 4 V – 36 V

• Output Voltage Options: 3.3 V / 5 V / 12 V / ADJ

• Output Current: 1 A (max)

• Efficiency: Up to 85 % (typ.)

• Operating Temperature: –40 °C to +125 °C

• Switching Frequency: 52 kHz (fixed)

• Internal Thermal & Over-Current Protection

• Low Quiescent Current

Package: TO220 (Through-Hole)

Applications:

• DC-DC Step-Down Conversion

• Industrial and Consumer Electronics

• Battery Chargers and Portable Equipment

• Embedded Power Modules