DESCRIPITION

The LM2576BM 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 and an ADJ output version.

FEATURES

● 3.3V, 5V, 12V and adjustable output versions

● Guaranteed 3A output current

● Adjustable version output voltage range,1.23V to 37V± 4 max over line and load conditions

● 52 kHz fixed frequency internal oscillator

● TTL shutdown capability, low power standby mode

● High efficiency

● Uses readily available standard inductors

● Thermal shutdown and current limit protection

● Wide input voltage range up to 40V

● Requires only 4 external components

APPLICATIONS

● Simple high-efficiency step-down (buck) regulator

● Efficient pre-regulator for linear regulators

● On-card switching regulators

● Positive to negative converter (Buck-Boost)