AIC1747 Datasheet, PDF (1/22 Pages) Analog Intergrations Corporation – 300mA Linear Regulator With Bypass Pin

AIC1747
FEATURES
300mA Linear Regulator With Bypass Pin
DESCRIPTION
Guarantee 300mA Output Current.
Fast Response in Line/Load Transient
Wide Operating Voltage Ranges: 2.0V to 5.5V.
0.01DŽA Shutdown Standby Current
Low Quiescent Currentj80µA.
Output Voltage is available within 1.1~4.2V
Low Dropoutj270mV at 300mA
PSRRj60dB at 1kHz.
Active High Shutdown Control.
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
Cellular Phones.
PCMCIA Cards
Laptop, Palmtops, Notebook Computers
Personal Communication Equipment.
PDAs.
Digital Still Cameras.
Portable Consumer Equipments.
AIC1747 is optimized for low ESR ceramic
capacitor operation with 300mA continuous
current. The AIC1747 is designed for portable RF
and wireless applications with demanding
performance and space requirements.
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.
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.
In addition, a logic-level shutdown input is
included, which reduce supply current to less than
0.01DŽA (typ.) in shutdown mode with fast turn-on
& off time less than 50 DŽ s & 30 DŽ s. The
AIC1747’s current limit and thermal protection
provide protection against any overload condition
that would cause excessive junction temperatures.
TYPICAL APPLICATION CIRCUIT
V_IN
C_IN
1µF
VIN
VOUT
GND
BP
EN
AIC1747
C_OUT
1µF
V_OUT
C_BP
0.1nF
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: [phone]
FAX: [phone] www.analog.com.tw
DS-1747G-02 100808
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