Microsemi

Analog Mixed Signal Group

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

Page 1

Copyright

© 2000

Rev. 1.0d, 2007-08-29

LX8211

150mA CMOS Low Dropout Regulator

TM

®

DESCRIPTION

The LX8211 fixed/adjustable voltage

linear regulators combines low dropout,

high accuracy, ultra-low ground current

and fast response in a very small

footprint.

Using the Enable pin the regulators is

switched on with TTL logic levels,

which is especially useful for battery-

operated equipment.

Other features

include independent Thermal and Short

Circuit Current protection. The regulator

is stable with a low value ceramic output

capacitors.

For ultra low noise operation a Bypass

pin is brought out to connect an optional

capacitor.

Significant performance

improvements over Bipolar technology

are achieved designing in CMOS:

increased

regulator

efficiency

by

minimizing operating ground current

(typ<140uA) and it is nearly eliminated

(typ<1uA) in shutdown.

The PMOS

output transistor allows for ultra low

dropout typically less than 300mV at

100mA.

IMPORTANT:

For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

PRODUCT H I GHLIGHT

C

IN

1µF

470pF

Optional

C

OUT

1µF

ON

OFF

V

IN

ENABLE

C

BY/ADJUST

V

OUT

GND

+

¯

KEY FEATUR ES

Dropout Voltage typically

175mV @ 100mA

Ultra low shutdown Current

typically less than 1uA

High Output accuracy trimmed

to 0.25%

Standard pinout in SOT-23-5

Noise Bypass feature available

Current and Over Temperature

protection

Stable with low cost ceramic

output capacitor

APPLICATIONS

Battery Operated Systems

Laptop, Notebook and PDA’s

Cellular Telephones/pagers

Hand-Held Instruments

Linear post regulators for

SMPS

PACKAGE ORDER INFO

SE

Plastic SOT-23

5-PIN

RoHS Compliant / Pb-free

Transition DC: 0503

-40 to 125

Adjustable

LX8211-00ISE

82A1

-40 to 125

2.5V

LX8211-25ISE

82B1

-40 to 125

2.7V

LX8211-27ISE

82D1

-40 to 125

2.8V

LX8211-28ISE

82E1

-40 to 125

3.0V

LX8211-30ISE

82G1

-40 to 125

3.3V

LX8211-33ISE

82K1

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8211-25ISE-TR)