LX8941

Microsemi

Analog Mixed Signal Group

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

Page 1

Adjustable Low Dropout Regulator

TM

®

Copyright

© 2001

Rev. 1.0, 2011-02-04

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 FEA T URES

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 HIGHLIG HT

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

Plastic TO-220

5 pin

Plastic TO-263

5 Pin

P

DD

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)