AIC1748 Datasheet, PDF (1/20 Pages) Analog Intergrations Corporation – High PSRR, 600mA Linear Regulator With Bypass Pin

AIC1748
High PSRR, 600mA Linear Regulator With Bypass Pin
 ^FEATURES
 ^DESCRIPTION
 Guarantee 600mA Output Current.
 Fast Response in Line/Load Transient.
 Wide Operating Voltage Ranges: 2.3V to
6.0V.
 <0.01μA Shutdown Standby Current.
 Low Quiescent Current：<100µA.
 Fixed: 0.8V, 1.2V, 1.8V, 2.5V, 2.85V, 3.3V ,
4.0V Output Voltage.
 Adjustable Output Voltage are available from
0.8~4.5V.
 Low Dropout：350mV at 600mA load current
and 3.3V output voltage.
 High PSRR：65dB at 1kHz.
 Active Low or High Shutdown Control.
 Current Limit, Current Foldback and Thermal
Protection.
 Available in ±2% Output Tolerance.
 Available in 3 & 5 lead of SOT23, SOT89,
TO252 & 3 lead of SOT223 Package.
 ^APPLICATIONS
 Cellular Phones
 PCMCIA Cards
 Laptop, Palmtops, Notebook Computers
 Personal Communication Equipment
 PDAs
 Digital Still Cameras
 Portable Consumer Equipments
A low noise, high PSRR and ultra low dropout
linear regulator AIC1748 is optimized for
ceramic capacitors operation with 600mA
continuous current. The AIC1748 is designed
for portable and wireless devices with
demanding performance and space
requirements.
The AIC1748 offers high precision output
voltage of 2% tolerance. Output voltage can
also be available on demand for those other
than the preset values.
A noise bypass pin is available for further
reduction of output noise. At 600mA load
current and 3.3V output voltage, a 350mV
dropout is performed. The quality of low
quiescent current and low dropout voltage
makes this device ideal for battery power
applications. The high ripple rejection and low
noise of the AIC1748 provide enhanced
performances for critical applications such as
cellular phones, and PDAs.
In addition, a logic-level shutdown input is
included, which reduce supply current to less
than 0.01μA (typ.) in shutdown mode with fast
turn-on & off time less than 50μs & 30μs. The
AIC1748’s current limit and thermal protection
provide protection against any overload
condition that would create excessive junction
temperatures.
 ^{TYPICAL APPLICATION CIRCUIT}
AIC1748-33
Vin
VIN
VOUT
GND
Vout
Vin
3.3V
ENABLE
Cin
Cout
Cin
1uF
1uF
1uF
AIC1748AL-33
VIN
VOUT
EN
ADJ
GND
Vout
R1
3.3V
375k
R2
Cout
120k
1uF
Fixed Linear Regulator
Adjustable 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-1748G-05 20120612
1