Product Summary

The LM2576SX-5.0 is a regulator which is monolithic integrated circuit that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A 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, the LM2576SX-5.0 is simple to use and include internal frequency compensation and a fixed-frequency oscillator. Applications include Simple high-efficiency step-down (buck) regulator, Efficient pre-regulator for linear regulators, On-card switching regulators and positive to negative converter (Buck-Boost).

Parametrics

LM2576SX-5.0 absolute maximum ratings: (1)Maximum Supply Voltage: 45V; (2)Output Voltage to Ground (Steady State): -1V; (3)Power Dissipation: Internally Limited; (4)Storage Temperature Range: -65℃ to +150℃; (5)Maximum Junction Temperature: -150℃.

Features

LM2576SX-5.0 features: (1)3.3V, 5V, 12V, 15V, and adjustable output versions; (2)Adjustable version output voltage range; (3)Guaranteed 3A output current; (4)Wide input voltage range, 40V up to 60V for HV version; (5)Requires only 4 external components; (6)52 kHz fixed frequency internal oscillator; (7)TTL shutdown capability, low power standby mode; (8)High efficiency; (9)Uses readily available standard inductors; (10)Thermal shutdown and current limit protection; (11)P+ Product Enhancement tested.

Diagrams

LM2576SX-5.0 Block Diagram 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2576SX-5.0
LM2576SX-5.0
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-500: $1.06
500-1000: $0.85
1000-2500: $0.80
2500-5000: $0.77
LM2576SX-5.0/NOPB
LM2576SX-5.0/NOPB
National Semiconductor (TI)
Switching Converters, Regulators & Controllers 3A STEP-DOWN VLTG REG
Data Sheet
0-1: $2.06
1-25: $1.66
25-100: $1.51
100-250: $1.36
250-500: $1.00