Data Sheet
150mA RF ULDO REGULATOR
AP2201
General Description
Features
The AP2201 is a 150mA output current fixed voltage
regulator designed to provide very low noise, ultra low
dropout voltage (typically 165mV at 150mA), very
low standby current (1µA maximum) and excellent
power supply ripple rejection (PSRR 75dB at 100Hz)
in battery powered applications, such as handsets and
PDAs and in noise sensitive applications, such as RF
electronics.
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Up to 150mA Output Current
Low Standby Current
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Low Dropout Voltage: V
=165mV at 150mA
DROP
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High Precision Output Voltage: ±1%
Good Ripple Rejection Ability: 75dB at 100Hz
and I
=100µA
OUT
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Tight Load and Line Regulation
Low Temperature Coefficient
Over Current Protection
Thermal Protection
Reverse-battery Protection
Logic-controlled Enable
The AP2201 also features individual logic compatible
enable/shutdown control inputs, a low power shutdown
mode for extended battery life, over current protection,
over temperature protection, as well as reversed-bat-
tery protection.
Applications
The AP2201 has 2.6V, 2.8V and 3.0V versions.
The AP2201 is available in space saving 5-pin SOT-
23-5 package.
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Cellular Phones
Cordless Phones
Digital Still Cameras
Wireless Communicators
PDAs / Palmtops
PC Mother Board
Consumer Electronics
SOT-23-5
Figure 1. Package Type of AP2201
Nov. 2006 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1