AIC1740
Low Output Voltage, 500mA 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-1740-00 Aug 2, 00 TEL: 886-3-5772500 FAX: 886-3-5772510 2
n FEATURES
l Low Dropout Voltage of 900mV at 500mA
Output Current (3.0V Output Version).
l Guaranteed 500mA Output Current.
l Internal 1.5Ω P-MOSFET Draws no Base
Current.
l Low Ground Current at 65µA.
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 4.7µF 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 Monitor Microprocessor.
l Voltage Regulator for RAM Module.
l Wireless Communication Systems.
l Battery Powered Systems.
n DESCRIPTION
The AIC1740 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1740 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage. Typical ground current remains
approximately
65µA, 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
AIC1740 against fault conditions.
The AIC1740 comes in the popular SOT-223,
TO-251 and TO-252 packages.

n TYPICAL APPLICATION CIRCUIT
++
AIC1740 VOUT
VOUT
GND
VIN
1µF
CIN
VIN
10µF
COUT
Low Dropout Linear Regulator