Product Summary

The LM2575S-12 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 LM2575S-12 is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and anadjustable output version.Requiring a minimum number of external components, the LM2575S-12 is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2575S-12 offers a high-efficiency replacement forpopular three-terminal linear regulators. Applications include simple high-efficiency step-down regulator, efficient pre-regulator for linear regulators, on-card switching regulators, positive to negative convert, isolated flyback converter using minimum number of external components and negetive boost converter.

Parametrics

LM2575S-12 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

LM2575S-12 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

LM2575S-12 Typical application

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2575S-12
LM2575S-12
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-360: $1.15
360-540: $0.98
540-1035: $0.75
1035-2520: $0.70
LM2575S-12/NOPB
LM2575S-12/NOPB
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-1: $1.62
1-25: $1.30
25-100: $1.17
100-250: $1.04