Diodes AP2128 User Manual

Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

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

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 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.

, adjustable output

OUT

make them ideal for

Features

· Wide Operating Voltage: 2.5V to 6V

· Low

Dropout Voltage:170mV@300mA for

V

=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

and C

IN

OUT

· Excellent Line/Load Regulation

· Soft Start Time: 50µs

· Auto Discharge Resistance: R

DS(ON)

=60Ω

Applications

· Datacom

· Notebook Computers

· Mother Board

SOT-23-5

Figure 1. Package Type of AP2128

Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Pin Configuration

K Package

(SOT-23-5)

Shutdown

Figure 2. Pin Configuration of AP2128 (Top View)

Functional Block Diagram

SHUTDOWN

1

Logic Control

V

REF

GND

V

IN

Shutdown

and

ADJ/NC

1

2

34

MOS Driver

5

V

OUT

3

VIN

4

Current Limint

And

Thermal

Protection

VOUT

2

GND

Fixed Version

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Functional Block Diagram (Continued)

SHUTDOWN

1

V

REF

Shutdown

and

Logic Control

MOS Driver

Current Limint

And

Thermal

Protection

3

VIN

4

VOUT

5

ADJ

2

GND

Adjustable Version

Figure 3. Functional Block Diagram of AP2128

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Ordering Information

AP2128 -

Circuit Type

Package

K: SOT-23-5

Product Package

Temperature

Range

G1: Green

TR: Tape and Reel

ADJ: ADJ Output

1.0: Fixed Output 1.0V

1.2: Fixed Output 1.2V

1.5: Fixed Output 1.5V

1.8: Fixed Output 1.8V

2.5: Fixed Output 2.5V

2.8: Fixed Output 2.8V

3.0: Fixed Output 3.0V

3.3: Fixed Output 3.3V

3.9: Fixed Output 3.9V

4.2: Fixed Output 4.2V

4.75: Fixed Output 4.75V

5.2: Fixed Output 5.2V

Part Number Marking ID Packing Type

AP2128K- ADJTRG1

AP2128K-1.0TRG1 FAJ Tape & Reel

AP2128K-1.2TRG1 FAK Tape & Reel

FAD Tape & Reel

AP2128K-1.5TRG1 GAN Tape & Reel

AP2128K-1.8TRG1 GAP Tape & Reel

AP2128K-2.5TRG1 GAQ Tape & Reel

AP2128 SOT-23-5

BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green.

-40 to 85oC

AP2128K-2.8TRG1 GAR Tape & Reel

AP2128K-3.0TRG1

AP2128K-3.3TRG1 FAL

AP2128K-3.9TRG1 GBU Tape & Reel

AP2128K-4.2TRG1 GAZ Tape & Reel

AP2128K-4.75TRG1 GFZ Tape & Reel

AP2128K-5.2TRG1 GAV Tape & Reel

GAW Tape & Reel

Tap e & Ree l

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Input Voltage V

Shutdown Input Voltage V

Output Current I

Junction Temperature T

Storage Temperature Range T

Lead Temperature (Soldering, 10sec) T

LEAD

Thermal Resistance θ

IN

CE

OUT

J

STG

JA

6.5 V

-0.3 to VIN+0.3 V

450 mA

o

C/W

o

150

-65 to 150

260

250

C

ESD (Human Body Model) ESD 6000 V

ESD (Machine Model) ESD 200 V

Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage V

Operating Ambient Temperature Range T

IN

A

Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited

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2.5 6 V

-40 85

o

C

Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Electrical Characteristics

(AP2128-ADJ, V

min=2.5V, CIN=1µF, C

IN

OUT

=1µF,

Bold typeface applies over -40oC≤TA≤

85oC,

unless otherwise specified.)

Parameter Symbol Conditions Min Typ Max Unit

OUT

VIN=2.5V

1mA≤I

VIN=2.5V,

V

OUT

VIN=2.5V

V

IN

)

1mA≤I

V

IN

)

I

OUT

VIN=2.5V, I

VIN=2.5V,

V

SHUTDOWN

≤300mA

OUT

=98%×V

=2.5V,

≤300mA

OUT

=2.5V to 6V

=30mA

OUT

in off mode

0.784 0.8 0.816 V

2.5 6 V

300 400 mA

OUT

450 mA

0.6 %/A

0.06 %/V

=0mA 60 90 µA

0.1 1.0 µA

Reference Voltage

V

Input Voltage V

Maximum Output Current

Current Limit

Load Regulation

Line Regulation

I

OUT(MAX)

I

LIMIT

∆V

/(∆I

OUT*VOUT

∆V

/(∆VIN*V

Quiescent Current I

Standby Current

I

REF

IN

OUT

Q

STD

f=100Hz 68 dB Power Supply Rejection Ratio

PSRR

Ripple 1Vp-p

=3V

V

IN

f=1KHz 68 dB

f=10KHz 54 dB

UP

)

I

OUT

V

=30mA,

OUT

-40oC≤TA≤

=0V 50 mA

TA=25oC, 10Hz ≤f≤100kHz,

=0.8V

V

OUT

85oC

±100

ppm/

50 µs

60

µVrm s

Output Voltage

(∆V

OUT/VOUT

Temperature Coefficient

Short Current Limit I

Soft Start Time t

RMS Output Noise

Shutdown

"High" Voltage Shutdown input voltage "High" 1.5 6 V

V

/∆T

SHORT

NOISE

o

C

Shutdown

V

R

Shutdown tance

Thermal Shutdown 165

Thermal Shutdown Hysteresis 30

Thermal Resistance

"Low" Voltage Shutdown input voltage "Low" 0 0.4 V

Discharge MOSFET

OUT

DS(ON)

Pull Down Resis-

θ

JC

Shutdown input voltage "Low" 60 Ω

3MΩ

SOT-23-5 150

o

C/W

o

C

o

C

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128

Electrical Characteristics (Continued)

(AP2128-1.0V/1.2V/1.5V/1.8V, VINmin.=2.5V, CIN=1µF, C

erwise specified.)

Parameter Symbol Conditions Min Typ Max Unit

Output Voltage

V

Input Voltage V

Maximum Output Current

Current Limit

Load Regulation

Line Regulation

Dropout Voltage

I

OUT(MAX)

I

LIMIT

∆V

/(∆I

OUT*VOUT

∆V

/(∆VIN*V

V

Quiescent Current I

(∆V

OUT/VOUT

I

PSRR

Standby Current

Power Supply Rejection Ratio

Output Voltage Temperature Coefficient

Short Current Limit I

SHORT

Soft Start Time t

Shutdown

"High" Voltage Shutdown input voltage "High" 1.5 6 V

OUT

IN

OUT

DROP

Q

STD

/∆T

UP

VIN=2.5V

1mA≤I

VIN=2.5V,

V

OUT

VIN=2.5V

V

IN

)

1mA≤I

V

IN

)

I

OUT

V

OUT

V

OUT

V

OUT

V

OUT

VIN=2.5V, I

VIN=2.5V,

V

SHUTDOWN

Ripple 1Vp-p V

IN

)

I

OUT

V

OUT

=1µF,

OUT

Bold typeface applies over -40oC≤TA≤

98%×

≤300mA

V

OUT

85oC,

unless oth-

102%×

V

OUT

2.5 6 V

=98%×V

OUT

300 400 mA

450 mA

=2.5V,

≤300mA

OUT

=2.5V to 6V

=30mA

=1.0V, I

OUT

=1.2V, I

OUT

=1.5V, I

OUT

=1.8V, I

OUT

in off mode

=300mA 1400 1500

=300mA 1200 1300

=300mA 900 1000

=300mA 600 700

=0mA 60 90 µA

0.1 1.0 µA

0.6 %/A

0.06 %/V

f=100Hz 68 dB

=3V

f=1KHz 68 dB

f=10KHz 54 dB

=30mA,

-40oC≤TA≤

85oC

±100

=0V 50 mA

50 µs

V

mV

ppm/

o

C

Shutdown

V

R

Shutdown Pull Down Resistance

Thermal Shutdown 165

Thermal Shutdown Hysteresis 30

Thermal Resistance

"Low" Voltage Shutdown input voltage "Low" 0 0.4 V

Discharge MOSFET

OUT

DS(ON)

Shutdown input voltage "Low" 60 Ω

3MΩ

θ

JC

SOT-23-5 150

o

C/W

C

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