DatasheetsPDF.com

LM2576

Micrel Semiconductor
Part Number LM2576
Manufacturer Micrel Semiconductor
Description 52kHz Simple 3A Buck Voltage Regulator
Published Mar 22, 2005
Detailed Description LM2576 Micrel LM2576 52kHz Simple 3A Buck Voltage Regulator General Description The LM2576 series of monolithic integ...
Datasheet PDF File LM2576 PDF File

LM2576
LM2576

Overview
LM2576 Micrel LM2576 52kHz Simple 3A Buck Voltage Regulator General Description The LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator.
Fixed versions are available with a 3.
3V, 5V, or 12V fixed output.
Adjustable versions have an output voltage range from 1.
23V to 37V.
Both versions are capable of driving a 3A load with excellent line and load regulation.
These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator.
The LM2576 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators.
It substantially reduces the size of the heat sink, and in many cases no heat sink is required.
A standard series of inductors available from several different manufacturers are ideal for use with the LM2576 series.
This feature greatly simplifies the design of switch-mode power supplies.
The feedback voltage is guaranteed to ± 2% tolerance for adjustable versions, and the output voltage is guaranteed to ± 3% for fixed versions, within specified input voltages and output load conditions.
The oscillator frequency is guaranteed to ±10%.
External shutdown is included, featuring less than 200µA standby current.
The output switch includes cycle-bycycle current limiting and thermal shutdown for full protection under fault conditions.
Features • 3.
3V, 5V, 12V, and adjustable output versions • Voltage over specified line and load conditions: Fixed version: ±3% max.
output voltage Adjustable version: ± 2% max.
feedback voltage • Guaranteed 3A output current • Wide input voltage range: 4V to 40V • Wide output voltage range 1.
23V to 37V • Requires only 4 external components • 52kHz fixed frequency internal oscillator • Low power standby mode IQ typically < 200µA • 80% efficiency (adjustable version typically > 80%) • Uses readily available standard inductors • Thermal ...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)