AP2121AK-1.8 查看數據表（PDF） - BCD Semiconductor

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AP2121AK-1.8

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

BCD Semiconductor 

Preliminary Datasheet

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

AP2121

General Description

Features

The AP2121 series are positive voltage regulator ICs · Low Dropout Voltage at IOUT=100mA: 150mV

fabricated by CMOS process. Each of these ICs con-

Typical (Except 1.5V Version)

sists of a voltage reference, an error amplifier, a resis- · Low Standby Current: 0.1µA Typical

tor network for setting output voltage, a current limit

circuit for current protection and a chip enable circuit

(5-pin products only).

·

·

Low Quiescent Current: 25µA Typical

High Ripple Rejection: 70dB Typical（f=10kHz）

· Maximum Output Current: More Than 150mA

The AP2121 series feature high ripple rejection, low

(300mA Limit)

dropout voltage, low noise, high output voltage accu- · Extremely Low Noise: 30µVrms (10Hz to

racy, and low current consumption which make them

100kHz)

ideal for use in various battery-powered devices.

· Excellent Line Regulation: 4mV Typical

· Excellent Load Regulation: 12mV Typical

The AP2121 series have 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, · High Output Voltage Accuracy: ±2%

3.2V and 3.3V versions.

· Excellent Line Transient Response and Load

Transient Response

The AP2121 are available in standard SOT-23-3 and · Compatible with Low ESR Ceramic Capacitor (as

SOT-23-5 packages.

Low as 1µF)

Applications

· Mobile Phones, Cordless Phones

· Wireless Communication Equipment

· Portable Games

· Cameras, Video Recorders

· Sub-board Power Supplies for Telecom Equip-

ment

· Battery Powered Equipment

Mar. 2007 Rev. 1. 4

SOT-23-3

SOT-23-5

Figure 1. Package Types of AP2121

BCD Semiconductor Manufacturing Limited

1

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