AIC1739
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-1739-01 TEL: 886-3-5772500 FAX: 886-3-5772510 1
n FEATURES
l Low Dropout Voltage of 180mV at 100mA
Output Current (3.0V Output Version).
l Guaranteed 300mA Output Current.
l Internal 1.3Ω P-MOSFET Draws no Base
Current.
l Low Ground Current at 55µA.
l 2% Accuracy Output Voltage of 1.8V/ 2.0V/
2.5V/ 2.7V/ 3.0V.
l Input Voltage Range up to 12V.
l Needs only 1µF for Stability.
l Current and Thermal Limiting.
n APPLICATIONS
l Voltage Regulator for CD-ROM Drivers.
l Voltage Regulator for LAN Cards.
l Voltage Regulator for Microprocessor.
l Wireless Communication Systems.
l Battery Powered Systems.
n DESCRIPTION
The AIC1739 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1739 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
is exceptionally low. Output current limiting
and thermal limiting are built in to provide
maximal protection to the AIC1739 against
fault conditions.
The AIC1739 comes in the popular 3-pin
SOT-89 and TO-92 packages.
n TYPICAL APPLICATION CIRCUIT

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AIC1739
10µF
COUT
VOUT
VOUT
GND
VIN
1µF
CIN
VIN
Low Dropout Linear Regulator