AIC1742
Low Noise, Low Quiescent Current,
150mA Linear Regulator with Noise Bypass
FEATURES
DESCRIPTION
z Very Low Noise, 25μVRMS @ f=10~100kHz.
AIC1742 is a low noise, low dropout linear
regulator, and is housed in a small SOT-23-5
package. The device is in the “ON” state when
the SHDN pin is set to logic high level. A low
dropout voltage of 90mV at 50mA load current
is performed. 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
z Very Low Quiescent Current, 35μA.
z Very Low Dropout Voltage, 90mV @ 50mA.
z Active Low Shutdown Control.
z Short Circuit and Thermal Protection.
z 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 2.85V, 2.9V, 3.0V,
3.3V Output Voltage.
z Available in ±2% Output Tolerance.
z Low Profile Package: SOT-23-5
APPLICATIONS
z Cellular Telephones.
the requirement for
a
reverse voltage
protection diode. The high ripple rejection and
low noise of AIC1742 provide enhanced
performance for critical applications. The
noise bypass pin can be connected an
external capacitor to reduce the output noise
level.
z Pagers.
z Personal Communication Equipment.
z Cordless Telephones.
z Portable Instrumentation.
z Portable Consumer Equipment.
z Radio Control Systems.
z Low Voltage Systems.
z Battery Powered Systems
TYPICAL APPLICATION CIRCUIT
VIN
VIN
VOUT
V
OUT
C
IN
C
2.2 F
1 F
μ
OUT
μ
GND
BP
SHDN
C
BP
V
SHDN
0.01 F
μ
AIC1742
* CIN : TAIYO YUDEN, CEJMK107BJ105MA-T
*COUT : TAIYO YUDEN, CEJMK107BJ225Mθ-T
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-1742G-01 20100121
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
1