LM2576/LM2576HV Series SIMPLE SWITCHER 3A Step-Down Voltage Regulator
August 2004
LM2576/LM2576HV Series
SIMPLE SWITC...
LM2576/LM2576HV Series SIMPLE SWITCHER 3A Step-Down Voltage
Regulator
August 2004
LM2576/LM2576HV Series
SIMPLE SWITCHER® 3A Step-Down Voltage
Regulator
General Description
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 grea...