AIC1747
300mA Linear Regulator With Bypass Pin
FEATURES
DESCRIPTION
ꢀ
ꢀ
AIC1747 is optimized for low ESR ceramic
ꢁ Guarantee 300mA Output Current.
capacitor operation with 300mA continuous
ꢁ Fast Response in Line/Load Transient
ꢁ Wide Operating Voltage Ranges: 2.0V to 5.5V.
ꢁ 0.01μA Shutdown Standby Current
current. The AIC1747 is designed for portable RF
and wireless applications with demanding
performance and space requirements.
ꢁ Low Quiescent Current:80µA.
ꢁ Output Voltage is available within 1.1~4.2V
ꢁ Low Dropout:270mV at 300mA
ꢁ PSRR:60dB at 1kHz.
The AIC1747 offers high precision output voltage
of ±2% tolerance. Output Voltage is available
within 1.1~4.2V. There are version of 1.1, 1.2, 1.3,
1.5, 1.8, 2.5, 2.7, 2.8, 2.85, 3.0, 3.3, 3.5, 3.7, and
3.8 for a fixed output voltage.
ꢁ Active High Shutdown Control.
A noise bypass pin is available for further
reduction of output noise. At 300mA load current,
a 270mV dropout can be performed. The quality
of low quiescent current and low dropout voltage
makes the device ideal for battery power
applications. The high ripple rejection and low
noise of the AIC1747 provide enhanced
performances for critical applications such as
cellular phones, and PDAs.
ꢁ Fixed: 1.1, 1.2, 1.3, 1.5, 1.8, 2.5, 2.7, 2.8, 2.85,
3.0, 3.3, 3.5, 3.7, 3.8 Output Voltage.
ꢁ Current Limit and Thermal Protection.
ꢁ Available in ±2% Output Tolerance.
ꢁ Available in 3 & 5 lead of SOT-23, TSOT23,
SC70, & SOT-89 & DFN 6L 2x2 Package.
APPLICATIONS
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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 50 μs & 30 μs. The
AIC1747’s current limit and thermal protection
provide protection against any overload condition
that would cause excessive junction temperatures.
ꢁ Cellular Phones.
ꢁ PCMCIA Cards
ꢁ Laptop, Palmtops, Notebook Computers
ꢁ Personal Communication Equipment.
ꢁ PDAs.
ꢁ Digital Still Cameras.
ꢁ Portable Consumer Equipments.
TYPICAL APPLICATION CIRCUIT
ꢀ
VIN
VIN
VOUT
V
OUT
C
IN
C
1µF
1 F
µ
OUT
GND
EN
BP
C
BP
0.1nF
AIC1747
Ultra LDO Regulator
Analog Integrations Corporation
Si-Soft Research Center
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
DS-1747G-02 100808
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