AIC1731
300mA, Low Dropout Linear Regulator with Shutdown
ꢀFEATURES
ꢀDESCRIPTION
ꢁ Active Low Shutdown Control.
ꢁ Very Low Quiescent Current.
AIC1731 is a 300mA low noise, low dropout
linear regulator, and is housed in small SOT-23-5
package. The device is in the “ON” state when
ꢁ Very Low Dropout Voltage of 470mV at 300mA
Output Current (3.0V Output Version)
ꢁ 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V Output Voltage.
ꢁ Short Circuit and Thermal Protection.
ꢁ ±2% Output Tolerance.
the SHDN pin is set to logic high level. An
internal P-MOSFET pass transistor is used to
achieve 470mV low dropout voltage at 300mA
load current. It offers high precision output
ꢁ Miniature Package: SOT-23-5
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
AIC1731 provide enhanced performance for
critical applications. The noise bypass pin can be
connected an external capacitor to reduce the
output noise level.
ꢀAPPLICATIONS
ꢁ PDA
ꢁ DSC
ꢁ Notebook
ꢁ Pagers
ꢁ Personal Communication Equipment
ꢁ Cordless Telephones
ꢁ Portable Instrumentation
ꢁ Portable Consumer Equipment
ꢁ Battery Powered Systems
ꢀTYPICAL APPLICATION CIRCUIT
VIN
VIN
VOUT
BP
V
OUT
+
C
1 F
µ
IN
+
C
OUT
1 F
µ
GND
SHDN
C
0.1 F
BP
µ
V
SHDN
AIC1731
Low Noise Low Dropout Linear Regulator
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
DS-1731P-03 092304
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
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AIC [ ANALOG INTERGRATIONS CORPORATION ]
