PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Features
General Description
The PAM3101 series of positive voltage linear
regulators feature low quiescent current (65μA
Typ.) and low dropout voltage, making them ideal
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Low Dropout Voltage: 180mV@300mA
(VO=3.3V)
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Output Voltage Accuracy within ±±2
Quiescent Current:65μA Typ.
High PSRR: 70dB@1kHz
Excellent Line and Load Regulation
Fast Response
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-±3, SOT-89 and
SC70 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 ±.±μF
or greater.
Current Limiting
Short Circuit Protection
Low Temperature Coefficient
Shutdown Current:0.5μA
Thermal Shutdown
Space Saving Package: SOT-±3 , SOT-89
and SC70
Pb-Free Package
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Applications
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Cordless Phones
Cellular Phones
Bluetooth Earphones
Digital Cameras
Portable Electronics
WLANs
MP3 Players
Block Diagram
Typical Application
IN
VIN
VOUT
OUT
VIN
VOUT
PAM3101
EN GND BYP
CIN
CO
±.±μF
OverCurrent
Shutdown
1μF
CBYP
10nF
Thermal
Protection
EN
BYP
Amp
IN
OUT
VIN
VOUT
GND
PAM3101
Bandgap
GND
CIN
CO
1μF
±.±μF
Power Analog Microelectronics,Inc
www.poweranalog.com
09/±008 Rev 1.4
1
PAM [ POWER ANALOG MICOELECTRONICS ]
