LM2575T datasheet(1/19 Pages) SEMTECH

No. de pieza	LM2575T

Descripción Electrónicos	1A & 3A Miniconverter Switching Regulators

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Fabricante Electrónico	SEMTECH [Semtech Corporation]

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LM2575 & LM2576

1A & 3A Miniconverter

Switching Regulators

POWER MANAGEMENT

Revision 1, January 2001

u Pin for pin replacement for Nationals LM2575/6

series

u DC-to-DC buck or buck/boost converter requiring

only 4 support components

u Fixed or adjustable voltages

u Preset output voltages of 3.3V, 5V and 12V

u Wide output voltage range, 1.23V to 35V

u 82% typical efficiency @ 5V out

u Wide input voltage range, 4V to 40V

u Inhibit/enable control pin

u Industrial temperature range

u TO-220 and TO-263 packages

The LM2575/6 series switching regulators are monolithic

integrated circuits designed for use in buck or buck/

boost regulator applications requiring accurate output

voltages over combined variations of line, load and

temperature. This unique series greatly simplifies

switching power supply design. The LM2575 has a

maximum output current of 1A and the LM2576 is rated

for 3A.

The LM2575/6 series miniconverters include a

switching regulator and compensation network all within

the same package. Just add a choke, catch diode and

two capacitors to obtain an efficient DC-to-DC converter.

The current limit and thermal shutdown features of the

LM2575/6 series fully protect the device against

overstress conditions.

The LM2575/6 series offers an alternative to popular 3

terminal linear regulators by providing higher efficiency

with reduced heatsink size. In many applications a heat

sink will not be required.

u Micro controller power supplies

u Medical equipment

u Industrial power supplies

u Instrumentation power supplies

Description

Features

Applications

Typical Application Circuits

5

7

5

2

M

L6

7

5

2

M

L

1

H

µ

0

3

3H

µ

0

1

D

1

A

3A

7

C

N

I

F

µ

8

6F

µ

0

2

1

C

T

U

O

F

µ

0

3

3F

µ

0

,

1

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LM2575T Datasheet(PDF) 1 Page - Semtech Corporation

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