Product Summary

The LM2576S-5.0 regulator is monolithic integrated circuit that provides all the active functions for a step-down(buck) switching regulator, capable of driving 3A load withexcellent line and load regulation. The LM2576S-5.0 is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and anadjustable output version.Requiring a minimum number of external components, the LM2576S-5.0 is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2576S-5.0 offers a high-efficiency replacement forpopular three-terminal linear regulators. The LM2576S-5.0 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 LM2576S-5.0 is available from several different manufacturers. This feature greatly simplifies the design of switch-modepower supplies.

Parametrics

LM2576S-5.0 absolute maximum ratings: (1)maximum supply voltage: 45V; (2)output voltage to ground: -1V; (3) power dissipation: internally limited; (4)storage temperature range: 65℃~150℃; (5)maximum junction temperature: 150℃; (6) Lead Temperature: 260℃.

Features

LM2576S-5.0 features: (1)5V output, ±3% max over line and load conditions; (2)guaranteed 3A output current; (3)wide input voltage range, 7V to 40V; (4) requires 4 external components; (5)52kHz fixed frequency internal oscillator; (6)low power standby mode; (7) 80% efficency; (8) uses readily available standard inductors; (9)thermal shutdown and current limit protection; (10)100% electrical thermal limit burn-in.

Diagrams

LM2576S-5.0 typical application

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM2576S-5.0
LM2576S-5.0

National Semiconductor (TI)

Switching Converters, Regulators & Controllers

Data Sheet

0-315: $1.21
315-540: $1.06
540-1035: $0.85
1035-2520: $0.80
LM2576S-5.0/NOPB
LM2576S-5.0/NOPB

National Semiconductor (TI)

Switching Converters, Regulators & Controllers 3A STEP-DOWN VLTG REG

Data Sheet

0-1: $1.70
1-25: $1.36
25-100: $1.24
100-250: $1.12