Texas Instruments LM2576HVS-3.3/NOPB

Switching Regulator, Voltage-mode, 3A, 63kHz Switching Freq-Max, PSSO5

SIMPLE SWITCHER® 4V to 60V, 3A Low Component Count Step-Down Regulator 5-DDPAK/TO-263 -40 to 125

DC DC CONVERTER; Voltage Regulator Type:Step Down (Buck); Voltage, Input Max:60V; Voltage, Output Max:3.3V; Max Output Current:3A; Percentage Accuracy:4%; Frequency:52kHz; Voltage, Supply Min:6V; Voltage, Supply Max:60V; Termination Type:SMD; Case Style:TO-263; No. of Pins:5; Operating Temperature Range:-40°C to +125°C; Base Number:2576

DC/DC Converter IC; Switching Frequency Max:52kHz; Supply Voltage Min:4V; Package/Case:5-TO-220; Output Current:3A; Output Voltage:37V; Output Voltage, Vout:Adjustable; Peak Reflow Compatible (260 C):Yes; Supply Voltage:60V RoHS Compliant: Yes

The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A 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. 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 LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed +-4% tolerance on output voltage within specified input voltages and output load conditions, and +-10% on the oscillator frequency. External shutdown is included, featuring 50 uA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.