AIC1722

300mA Low Dropout Linear Regulator

Analog Integrations Corporation

4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

www.analog.com.tw

DS-1722-01

TEL: 886-3-5772500

FAX: 886-3-5772510

1

FEATURES

Low Dropout Voltage of 130mV at 100mA

Output Current (5.2V Output Version).

Guaranteed 300mA Output Current.

Internal 1.3

Ω P-MOSFET Draws no Base

Current.

Low Ground Current at 55

µA.

2% Accuracy Output Voltage of 3.3V/ 3.5V/

3.7V/ 3.8V/ 5.0V/ 5.2V.

Input Voltage Range up to 12V.

Needs only 1

µF for Stability.

Current and Thermal Limiting.

APPLICATIONS

Voltage Regulator for CD-ROM Drivers.

Voltage Regulator for LAN Cards.

Voltage Regulator for Microprocessor.

Wireless Communication Systems.

Battery Powered Systems.

DESCRIPTION

The AIC1722 is a 3-pin low dropout linear

regulator. The superior characteristics of the

AIC1722 include zero base current loss, very

low dropout voltage, and 2% accuracy output

voltage.

Typical

ground

current

remains

approximately 55

µA, from no load to maximum

loading conditions. Dropout voltage at 100mA

output current is exceptionally low: 130mV for

the AIC1722-50 and AIC1722-52, 180mV for

the AIC1722-33, AIC1722-35, and AIC1722-37

AIC1722-38. Output current limiting and thermal

limiting are built in to provide maximal

protection

to

the

AIC1722

against

fault

conditions.

The AIC1722 comes in the popular 3-pin

SOT-89 and TO-92 packages.

TYPICAL APPLICATION CIRCUIT

+

+

AIC1722

10

µF

VOUT

GND

VIN

1

µF

Low Dropout Linear Regulator