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LM2575 & LM2576

1A & 3A Miniconverter

Switching Regulators

POWER MANAGEMENT

Revision 1, January 2001

series

only 4 support components

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.

Description

Features

Applications

Typical Application Circuits

5

7

5

2

M

L6

7

5

2

M

L

L

1

H

µ

0

3

3H

µ

0

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

0

0

,

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