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300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Data Sheet

BCD Semiconductor Manufacturing LimitedSep. 2012 Rev. 1. 5

General Description

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.

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

and 4.2V fixed voltage versions.

These ICs are available in tiny SC-70-5 and SC-82

packages as well as industry standard SOT-23-3 and

SOT-23-5 packages.

Features

· Excellent Ripple Rejection: 70dB Typical (1.8V

Version)

· Low Dropout Voltage: 65mV (I

OUT

=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

· CDMA/GSM Cellular Handsets

· Battery-powered Equipments

· Laptops, Palmtops, Notebook Computers

· Hand-held Instruments

· PCMCIA Cards

· Portable Information Appliances

Figure 1. Package Types of AP2125

SOT-23-3 SOT-23-5 SC-70-5

SC-82

1 2 3 4 5 6 ... 26 27

Inhaltsverzeichnis

Seite 1 - Applications

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet1BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 2 - Pin Description

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet10BCD Semiconductor Manufacturing LimitedSep. 2012 R

Seite 3 - Functional Block Diagram

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Seite 4 - Ordering Information

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet12BCD Semiconductor Manufacturing LimitedSep. 2012 R

Seite 5

13Sep. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Seite 6 - Electrical Characteristics

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet14BCD Semiconductor Manufacturing LimitedSep. 2012 R

Seite 7

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Seite 8

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Seite 9

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Seite 10

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Seite 11 - Data Sheet

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Seite 12

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Seite 13

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet20BCD Semiconductor Manufacturing LimitedSep. 2012 R

Seite 14 - Figure 11. Current Limit

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Seite 15

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Seite 16

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Seite 17

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Seite 18

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Seite 19

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Seite 20

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Seite 21

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet3BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 22 - Typical Application

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet4BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 23 - SOT-23-3 Unit: mm(inch)

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet5BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 24 - SOT-23-5 Unit: mm(inch)

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet6BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 25 - SC-70-5 Unit: mm(inch)

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Seite 26 - SC-82 Unit: mm(inch)

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Data Sheet8BCD Semiconductor Manufacturing LimitedSep. 2012 Re

Seite 27

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