AIC1733
500mA, Low Dropout Linear Regulator with Shutdown




Analog Integrations Corporation Si-Soft Research Center DS-1733P-03 092304
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
null FEATURES
null Active Low Shutdown Control.
null Very Low Quiescent Current.
null Very Low Dropout Voltage of 650mV at 500mA
Output Current (3.0V Output Version)
null 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V Output Voltage.
null Short Circuit and Thermal Protection.
null ±2% Output Tolerance.
null Miniature Package: SOT-23-5
null APPLICATIONS
null PDA
null DSC
null Notebook
null Pagers
null Personal Communication Equipment
null Cordless Telephones
null Portable Instrumentation
null Portable Consumer Equipment
null Battery Powered Systems
null DESCRIPTION
AIC1733 is a 500mA low noise, low dropout
linear regulator, and is housed in small SOT-23-5
package. The device is in the “ON” state when
the SHDN pin is set to logic high level. An
internal P-MOSFET pass transistor is used to
achieve 650mV low dropout voltage at 500mA
load current. It offers high precision output
voltage of ±2%. The quality of low quiescent
current and low dropout voltage makes this
device ideal for battery power applications. The
internal reverse bias protection eliminates the
requirement for a reverse voltage protection
diode. The high ripple rejection and low noise of
AIC1733 provide enhanced performance for
critical applications. The noise bypass pin can be
connected an external capacitor to reduce the
output noise level.
null TYPICAL APPLICATION CIRCUIT

C
IN

1µF
V
IN
BP
VOUT
SHDN
GND
VIN
AIC1733
C
OUT

1µF
C
BP
0.1µF
V
SHDN

V
OUT

+
+

Low Noise Low Dropout Linear Regulator