LM2576T-5.0 IC HTC TO-220-5 5V REGULATOR

Product Overview

A monolithic, high-efficiency step-down (buck) DC-DC switching voltage regulator capable of driving a 3A load with excellent line and load regulation. Operating at a fixed switching frequency of 52 kHz, this integrated circuit reduces the required size of external filter components and simplifies power supply layout thanks to its built-in power switch tube. It efficiently converts input voltages up to 40V into a stable, fixed 5V output, making it well-suited for distributed power systems, high-efficiency pre-regulators, and battery chargers. To ensure long-term system reliability, the device integrates robust fault-protection mechanisms, including cycle-by-cycle current limiting and overcurrent protection, operating across a wide temperature range (-40°C to +125°C).

Core Specifications

• Manufacturer: HTC

• Package Type: TO-220-5 (Through-Hole)

• Function: 3A Fixed 5V Step-Down (Buck) DC-DC Switching Regulator (MPN: LM2576T-5.0 / LCSC Part #C126042)

• Input Voltage: Accommodates a wide operating input voltage range up to 40V

• Control Interface: Internal fixed-frequency pulse-width modulation (PWM) control architecture with an integrated power switch, complemented by built-in cycle-by-cycle current limiting and overcurrent protection loops.