AIC1731_15 Datasheet, PDF (1/12 Pages) Analog Intergrations Corporation – 300mA, Low Dropout Linear Regulator with Shutdown

AIC1731
300mA, Low Dropout Linear Regulator
with Shutdown
„ FEATURES
z Active Low Shutdown Control.
z Very Low Quiescent Current.
z Very Low Dropout Voltage of 470mV at 300mA
Output Current (3.0V Output Version)
z 1.3V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V Output
Voltage.
z Short Circuit and Thermal Protection.
z ±2% Output Tolerance.
z Miniature Package: SOT-23-5 and SOT-89-5
„ APPLICATIONS
z PDA
z DSC
z Notebook
z Pagers
z Personal Communication Equipment
z Cordless Telephones
z Portable Instrumentation
z Portable Consumer Equipment
z Battery Powered Systems
„ DESCRIPTION
AIC1731 is a 300mA low noise, low dropout
linear regulator, and is housed in small SOT-23-5
and SOT-89-5 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 470mV low dropout voltage at
300mA 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
AIC1731 provide enhanced performance for
critical applications. The noise bypass pin can be
connected an external capacitor to reduce the
output noise level.
„ TYPICAL APPLICATION CIRCUIT
V_IN
C_IN ⁺
1μF
VIN
GND
VOUT
SHDN
SHDN
BP
AIC1731
+
C_OUT
1μF
(Note1)
V_OUT
C_BP
0.1μF
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.
TEL: [phone]
FAX: [phone] www.analog.com.tw
DS-1731G-02 20090928
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