PAM3101_13 Datasheet, PDF (1/26 Pages) Power Analog Micoelectronics – 300mA High PSRR Low Dropout CMOS Linear Regulator

PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Features
n Low Dropout Voltage: 180mV@300mA
(V_O=3.3V)
n Output Voltage Accuracy within ±2%
n Supply voltage range: 2.5V to 5.5V
n Quiescent Current:65μA Typ.
n High PSRR: 70dB@1kHz
n Excellent Line and Load Regulation
n Fast Discharge
n Current Limiting
n Short Circuit Protection
n Low Temperature Coefficient
n Shutdown Current:0.5μA
n Thermal Shutdown
n Space Saving Packages: SOT-23 , SOT-89,
SC70 and DFN1.6x1.6
n Pb-Free Package
Applications
n Cellular Phones
n Bluetooth Earphones
n Digital Cameras
n Portable Electronics
n WLANs
n MP3 Players
General Description
The PAM3101 series of positive voltage linear
regulators feature low quiescent current (65μA
Typ.) and low dropout voltage, making them ideal
for battery powered applications. Their high
PSRR make them useful in applications where
AC noise on the input power supply must be
suppressed. Space-saving SOT-23, SOT-89,
SC70 and DFN1.6x1.6-6L packages are
attractive for portable and handheld applications.
They have both thermal shutdown and current
limit features to prevent device failure from
extreme operating conditions. They are stable
with an output capacitor of 2.2μF or greater.
Typical Application
Block Diagram
IN
VIN
VOUT
OUT
PAM3101
EN GND BYP
C_IN
1μF
C_BYP
10nF
C_O
2.2μF
VIN
OverCurrent
Shutdown
Thermal
EN
Protection
VOUT
IN
VIN
VOUT
PAM3101
GND
C_IN
1μF
OUT
C_O
2.2μF
BYP
Bandgap
Amp
GND
Power Analog Microelectronics,Inc
www.poweranalog.com
1
11/2010 Rev 2.5