LX8221BIDU Microsemi Corporation, LX8221BIDU Datasheet

LX8221BIDU

Manufacturer Part Number

LX8221BIDU

Description

Dual 150ma CMOS Low Dropout Regulator

Manufacturer

Microsemi Corporation

Datasheet

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Rev. 1.0a, 2005-03-03

linear

selection of either fixed or adjustable

output voltages, and combine low

dropout

performance,

accuracy, and ultra-low ground current

within a very small package footprint.

for an ultra-low dropout characteristic

(e.g., typically less than 175mV at

100mA). The individual regulators can

be powered from either separate supply

voltages or the same supply voltage

between 2.8V to 6V allowing for

maximum system flexibility.

capacitor may be connected to each

Bypass pin separately to improve

performance

applications.

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

The LX8221 family of dual output

The PMOS output transistor allows

An optional ceramic or tantalum type

5.0V

3.3V

regulators

operation,

-40 to 125

Fixed / Adjustable Application

tight

(°C)

critical

provide

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

output

VIN2

VIN1

CB1

ADJ

fast

Note: Available in Tape & Reel. Append the letter “T” to the part number. (i.e. LX8221AIDU-TR)

GND

Adjustable

N/C

VOUT1

low-noise

D E S C R I P T I O N

for

transient

VOUT1

VOUT2

2.5V

2.7V

3.0V

voltage

EN2

EN1

the

}

Contact Microsemi for additional / available options

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improved with a minimized operating

ground current (typ < 140µA per

regulator). Further, this ground current

is virtually eliminated in shutdown mode

(typ < 1µA).

independent Thermal and Short Circuit

Current protection.

regulator to be switched on and off

independently by applying a TTL logic

level control signal to the Enable pin

further enhancing system level power

management.

footprint (i.e., 10-pin MSOP package)

make the LX8221 especially useful for

battery-operated equipment such as

cellular telephones, laptop computers

and PDA equipment.

Linfinity Microelectronics Division

Adjustable

P R O D U C T H I G H L I G H T

VOUT2

Overall regulator efficiency has been

Other safety features include channel

Separate Enable pins allow each

These features combined with a small

P A C K A G E O R D E R I N F O

Microsemi

Dual 150mA CMOS Low Dropout Regulator

5.0V

3.3V

Plastic MSOP 10-Pin

RoHS Compliant / Pb-free

Transition D/C: 0432

LX8221AIDU

LX8221BIDU

LX8221DIDU

LX8221GIDU

Adjustable / Adjustable Application

RODUCTION

VIN2

VIN1

ADJ1

ADJ2

GND

N/C

ATA

VOUT1

VOUT2

Compact regulators with

two 150 mA outputs

Dropout Voltage typically

175mV @ 100mA

Ultra low shutdown Current

typically less than 1µA

Output trimmed to 0.5%

Small MSOP-10 package

Over Current &

Temperature protection

Stable with ceramic or

tantalum capacitors

Battery Operated Systems

Laptop, Notebook and PDA’s

Cellular Telephones/pagers

Instrumentation

Linear post regulators for

SMPS

K E Y F E A T U R E S

EN2

EN1

Package Marking

APPLICATIONS

8221 AIDU LX

8221 BIDU LX

8221 DIDU LX

8221 GIDU LX

HEET

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LX8221

Page 1

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