AP2125N-4.2TRE1 查看數據表（PDF） - BCD Semiconductor

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AP2125N-4.2TRE1

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

BCD Semiconductor 

Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

General Description

Features

AP2125

The AP2125 series are 300mA, positive voltage regu-

lator ICs fabricated by CMOS process.

Each of these ICs is equipped with a voltage reference,

an error amplifier, a resistor network for setting output

voltage, a chip enable circuit, a current limit circuit and

OTSD (over temperature shut down) circuit to prevent

the IC from over current and over temperature.

The AP2125 series have features of high ripple rejec-

tion, low dropout voltage, low noise, high output volt-

age accuracy and low current consumption which

make them ideal for use in various battery-powered

apparatus.

· Excellent Ripple Rejection: 70dB Typical (1.8V

Version)

· Low Dropout Voltage: 65mV (IOUT=100mA,

3.3V Version)

· Low Standby Current: 0.01µA Typical

· Low Quiescent Current: 60µA Typical

· Extremely Low Noise: 50µVrms Typical

· Maximum Output Current: 300mA (Min.)

· High Output Voltage Accuracy: ±2%

· Compatible with Low ESR Ceramic Capacitor

· Excellent Line/Load Regulation

Applications

The AP2125 have 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.15V

and 4.2V fixed voltage versions.

· CDMA/GSM Cellular Handsets

· Battery-powered Equipments

These ICs are available in tiny SC-70-5 and SC-82 · Laptops, Palmtops, Notebook Computers

packages as well as industry standard SOT-23-3 and · Hand-held Instruments

SOT-23-5 packages.

· PCMCIA Cards

· Portable Information Appliances

SOT-23-3

May. 2010 Rev. 1. 4

SOT-23-5

SC-70-5

SC-82

Figure 1. Package Types of AP2125

BCD Semiconductor Manufacturing Limited

1

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