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Data Sheet
1
Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121
General Description
The AP2121 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
(5-pin products only).
The AP2121 series feature high supply voltage ripple
rejection, low dropout voltage, low noise, high output
voltage accuracy, and low current consumption which
make them ideal for use in various battery-powered
devices.
The AP2121 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V,
2.8V, 2.85V, 3.0V, 3.2V and 3.3V versions.
The AP2121 are available in standard SOT-23-3, SOT-
23-5 and CSP-4 packages.
Features
· Low Dropout Voltage at I
OUT
=100mA: 150mV
Typical (Except 1.2V, 1.3V and 1.5V Versions)
· Low Standby Current: 0.1μA Typical
· Low Quiescent Current: 25μA Typical
· High Ripple Rejection: 70dB Typical f=1kHz
· Output Current: More Than 200mA (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 Transient Response and Load
Transient Response
· Compatible with Low ESR Ceramic Capacitor (as
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
Figure 1. Package Types of AP2121
SOT-23-5SOT-23-3 CSP-4
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Podsumowanie treści

Strona 1

Data Sheet1Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 2 - Pin Description

Data Sheet10Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 3 - Functional Block Diagram

11Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 4 - Ordering Information

Data Sheet12Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 5

13Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 6

Data Sheet14Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 7

15Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 8 - Electrical Characteristics

Data Sheet16Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 9

17Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 10 - Data Sheet

Data Sheet18Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 11

19Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 12

Data Sheet2Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 13

Data Sheet20Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 14

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Strona 15

Data Sheet22Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 16

23Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 17

Data Sheet24Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 18

25Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 19 - Data Sheet

Data Sheet26Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 20

27Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP212

Strona 21

Data Sheet28Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 22

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Strona 23

Data Sheet3Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 24 - Typical Application

Data Sheet4Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 25

5Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121

Strona 26 - SOT-23-5 Unit: mm(inch)

Data Sheet6Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 27 - Pin 1 Mark

7Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121

Strona 28 - CSP-4 (P 0.5) Unit: mm(inch)

Data Sheet8Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing LimitedHIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

Strona 29

9Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121

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