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300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128
Data Sheet
1
Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited
Figure 1. Package Type of AP2128
SOT-23-5
General Description
The AP2128 series are positive voltage regulator ICs
fabricated by CMOS process. The AP2128 provides
two kinds of output voltage operation modes for
setting the output voltage. Fixed output voltage mode
senses the output voltage on V
OUT
, adjustable output
voltage mode needs two resistors as a voltage divider.
The AP2128 series have features of low dropout
voltage, low noise, high output voltage accuracy, and
low current consumption which
make them ideal for
use in various battery-powered devices.
AP2128 have 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V,
3.3V, 3.9V, 4.2V, 4.75V, 5.2V fixed voltage versions
and 0.8V to 5.5V adjustable voltage version.
AP2128 series are available in SOT-23-5 package.
Features
· Wide Operating Voltage: 2.5V to 6V
· Low
Dropout Voltage:170mV@300mA for
V
OUT
=3.3V, 140mV@300mA for V
OUT
=5.2V
· High Output Voltage Accuracy: ±2%
· High Ripple Rejection:
68dB@ f=1kHz, 54dB@ f=10kHz
· Low Standby Current: 0.1µA
· Low Quiescent Current: 60µA Typical
· Low Output Noise: 60µVrms@V
OUT
=0.8V
· Short Current Limit: 50mA
· Over Temperature Protection
· Compatible with Low ESR Ceramic Capacitor:
1µF for C
IN
and C
OUT
· Excellent Line/Load Regulation
· Soft Start Time: 50µs
· Auto Discharge Resistance: R
DS(ON)
=60
Applications
· Datacom
· Notebook Computers
· Mother Board
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Inhaltsverzeichnis

Seite 1 - Applications

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet1Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturi

Seite 2 - Functional Block Diagram

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet10Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 3

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet11Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 4 - Ordering Information

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet12Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 5

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet13Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 6 - Electrical Characteristics

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet14Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 7

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet15Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 8

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet16Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 9

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet17Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 10

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet18Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 11

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet19Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 12

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet2Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturi

Seite 13 - Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet20Sept. 2010 Rev. 2.0 BCD Semiconductor Manufactur

Seite 14

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Seite 15

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet3Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 16

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet4Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturi

Seite 17

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet5Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 18

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet6Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturi

Seite 19 - Typical Application

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet7Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

Seite 20 - Mechanical Dimensions

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet8Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturi

Seite 21

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Data Sheet9Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing

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