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Data Sheet

May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2122

General Description

The AP2122 series are positive voltage regulator ICs

fabricated by CMOS process. Each of these ICs con-

sists of a voltage reference, an error amplifier, a resis-

tor network for setting output voltage, a current limit

circuit for current protection and a chip enable circuit .

The AP2122 series feature high ripple rejection, low

dropout voltage, low noise, high output voltage accu-

racy, and low current consumption which make them

ideal for use in various battery-powered devices.

The AP2122 series have 1.5V, 1.8V, 2.5V, 2.8V, 3.0V,

3.2V and 3.3V versions.

The AP2122 are available in standard SOT-23-5 pack-

age.

Features

· Low Dropout Voltage at I

OUT

=100mA: 150mV

Typical (Except 1.5V Version)

· Low Standby Current: 0.1µA Typical

· Low Quiescent Current: 25µA Typical

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

· Maximum Output Current: More Than 150mA

(300mA Limit)

· Extremely Low Noise: 30µVrms (10Hz to

100kHz)

· Excellent Line Regulation: 4mV Typical

· Excellent Load Regulation: 12mV Typical

· High Output Voltage Accuracy: ±2%

· Excellent Line and Load Transient Response

· Compatible with Low ESR Ceramic Capacitor (as

Low as 1µF)

Applications

· Mobile Phones, Cordless Phones

· MP3/4

· Portable Electronic Devices

· Cameras, Video Recorders

· Sub-board Power Supplies for Telecom Equip-

ment

· Battery Powered Equipment

Figure 1. Package Type of AP2122

SOT-23-5

1 2 3 4 5 6 ... 19 20

Indice de contenidos

Pagina 1

Data Sheet1May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 2 - Pin Description

Data Sheet10May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 3 - Functional Block Diagram

Data Sheet11May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 4 - Ordering Information

Data Sheet12May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 5

Data Sheet13May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 6 - Electrical Characteristics

Data Sheet14May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 7

Data Sheet15May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 8

Data Sheet16May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 9

Data Sheet17May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 10 - Data Sheet

Data Sheet18May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 11

Data Sheet19May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 12

Data Sheet2May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 13

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Pagina 14

Data Sheet3May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 15

Data Sheet4May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 16

Data Sheet5May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 17

Data Sheet6May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 18 - Typical Application

Data Sheet7May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 19 - SOT-23-5 Unit: mm(inch)

Data Sheet8May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Pagina 20

Data Sheet9May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

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