AIC1722A
300mA Low Dropout Linear Regulator



null FEATURES
null Low Dropout Voltage of 470mV at 300mA Out-
put Current (3.0V Output Version).
null Guaranteed 300mA Output Current.
null Maximum Input Voltage is 8V
null Low Ground Current at 55µA.
null 2% Accuracy Output Voltage of 1.8V/ 2.0V
/2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/
5.2V.
null Needs only 1µF for Stability.
null Current and Thermal Limiting.

null APPLICATIONS
null Voltage Regulator for CD-ROM Drivers.
null Voltage Regulator for LAN Cards.
null Voltage Regulator for Microprocessor.
null Wireless Communication Systems.
null Battery Powered Systems.
null DESCRIPTION
The AIC1722A is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1722A include zero base current loss,
very low dropout voltage, and 2% accuracy
output voltage. Typical ground current
remains approximately 55µA, from no load to
maximum loading conditions. Dropout voltage
at 300mA output current is exceptionally low.
Output current limiting and thermal limiting are
built in to provide maximal protection to the
AIC1722A against fault conditions.
The AIC1722A comes in the popular 3-pin
SOT-89, TO-92 and SOT-23 packages.

null
TYPICAL APPLICATION CIRCUIT


++
AIC1722A
1µF
C
OUT
VOUT
VOUT
GND
VIN
1µF
C
IN
V
IN


Low Dropout Linear Regulator
(C
IN
and C
OUT
are electrolytic capacitor)
Analog Integrations Corporation Si-Soft Research Center DS-1722AP-01 070204
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1