AP2201 datasheet(1/12 Pages) BCDSEMI

部品番号	AP2201

部品情報	150mA RF ULDO REGULATOR

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メーカー	BCDSEMI [BCD Semiconductor Manufacturing Limited]

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150mA RF ULDO REGULATOR

AP2201

Preliminary Datasheet

1

Jun. 2005 Rev. 1. 0

BCD Semiconductor Manufacturing Limited

SOT-23-5

Figure 2. Package Type of AP2201

Figure 1. Typical Application of AP2201

General Description

The AP2201 is a 150mA output current fixed voltage

regulator designed to provide very low noise (45µVrms

at 80Hz-100KHz), ultra low dropout voltage (typically

165mV at 150mA), very low quiescent current (1µA

maximum) and excellent power supply ripple rejection

(PSRR 75dB at 100Hz) in battery powered applica-

tions, such as handsets and PDAs and in noise sensitive

applications, such as RF electronics.

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.

The output capacitor of 1.0µF minimum and 2.2µF

minimum near its pin are recommended when CBYP is

not used and when CBYP is 470pF respectively. The

output capacitor should have 5Ω or less ESR, tantalum

or aluminium electrolytic capacitors are adequate.

Bypass capacitor is connected to the internal voltage

reference to quiet noise. Its recommended value is

from 470pF to 1nF. If output noise is not a major con-

cern and rapid turn-on is necessary, omit CBYP and

leave BYP open.

The AP2201 has 2.6V, 2.8V and 3.0V versions now.

The AP2201 is available in space saving 5-pin SOT-

23-5 package.

Features

· Up to 150mA Regulator Output

· Low Quiescent Current

· Low Dropout Voltage: V

D=165mV at 150mA

· High Precision Output Voltage: ±1%

· Output Noise: 45µVrms at 80Hz-100KHz

· Good Ripple Rejection Ability: 75dB at 100Hz

and IOUT=100µA

· Tight Load and Line Regulation

· Low Temperature Coefficient

· Over Current Protection

· Thermal Protection

· Reverse-battery Protection

· Zero Off-mode Current

· Logic-controlled Enable

Applications

· Cellular Phones

· Cordless Phones

· Digital Still Cameras

· Wireless Communicators

· PDAs / Palmtops

· PC Mother Board

· Consumer Electronics

BYP

C

BYP

470pF

EN

GND

V

OUT

C

OUT

+

V

IN

AP2201-2.8

V

IN=3.8V

V

OUT=2.8V

V

OUT

V

IN

2.2

µF

C

IN

1.0

µF

tantalum

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