The LM2576HVS-5 (TO-263-5) Buck (Step Down) Switching Voltage Regulator Ic provides all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. This regulator is available in fixed output voltages of 12V version and requiring a minimum number of external components, this regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator.

The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink and in some cases no heat sink is required. A standard series of inductors optimized for use with the regulator are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Features:

1. Requires only 4 external components
2. 52kHz Fixed frequency internal oscillator
3. TTL shutdown capability, low power standby mode
4. High efficiency
5. Uses readily available standard inductors
6. Thermal shutdown and current limit protection
7. P+ Product enhancement tested
8. Applications: Power Management.