LX8941

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 1

Copyright

© 2001

Rev. 0.7a, 2005-11-10

Adjustable Low Dropout Regulator

TM

®

DESCRIPTION

The

Microsemi

LX8941

is

an

adjustable, low dropout regulator rated for

more than 1A of output current.

It can

regulate with as low as 0.8V headroom

between the input and output voltages, at

1A output current, thus minimizing power

dissipation. In addition, it can be used in

applications where worst case supplies

require a low input / output differential to

maintain regulation.

This feature makes it ideal for some

processor

applications

that

require

4V

operation from a 5V supply. In addition, the

LX8941 provides an on / off switch that

reduces the IC quiescent current when

activated,

making

it

ideal

for

battery

operated applications.

KEY FEATUR ES

2% Internally Trimmed Output

Output Current In Excess of 1A

Input – Output Differential Less

Than 0.8V @ 1A

Reverse Battery Protection

Short Circuit Protection

Internal Thermal Overload

Protection

Available in 5-Lead Plastic TO-

220 & Surface-Mount TO-263

PRODUCT H I GHLIGHT

IN

OUT

ADJ

Part

LX8941

10 µF

R1

412

R2

187

22µF

4V

ON

OFF

5V

600

500

400

300

200

100

0

100

500

1000

125°C

25°C

-40°C

Output Current (mA)

Dropout Voltage vs. Output

Current vs. Temperature

PACKAGE ORDER INFO

P

Plastic TO-220

5 pin

DD

Plastic TO-263

5 Pin

RoHS Compliant / Pb-free

Transition DC: 0543

RoHS Compliant / Pb-free

Transition DC: 0535

0 to 70

LX8941CP

LX8941CDD

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8941CDD-TR)