Datasheet AP131-15W, AP131-18W, AP131-20W, AP131-25W, AP131-28W Datasheet (Diodes) [ru]

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

Features

• Input Voltage Range is from 2.7 to 5.5V

• Dropout Voltage 400mV at 300mA Output Current

• Guaranteed 300mA Output Current

• Internal Ron = 1.5Ω PMOS draws no Base Current

• Low Quiescent Current 50µA

• Output Voltage: 1.5V/1.8V/2.0V/2.5V/2.8V/

• 2.9V/3.0V/3.3V/ 3.5V; Accuracy 2%

• Active Low Shutdown Function (EN pin)

• Fast Transient Response

• Good Load Regulation

• Current Limit and Thermal Shutdown Protection

• Short Circuit Current Fold-Back

• Lead Free package: SOT25

• SOT25: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Battery Powered Device

• Wireless Communication

• CD-ROM, DVD, and LAN Card

• PC Peripheral

Ordering Information

AP131 - XX W X - 7

General Description

The AP131 is a 300mA, fixed output voltage, low dr opout linear
regulator. The Device included pass element, error amplifier,
band-gap, current limit and thermal shutdown circuitry. The
device is ON when the EN pin is set to logic high level.

The characteristics of low dropout voltage and less quiescent
current make it good for some critical current applications, for
example, some battery powered devices. The typical quiescent
current is approximately 50µA from zero to maximum load. Due
to the internal flexible design, it results in extensively fixed output
voltage versions and makes it convenient to use for applications.
Built-in current-limit and thermal-shutdown functions prevent any
fault condition from IC damage. An external capacitor can be
connected to the BP pin and reduce the output noise.

Output Voltage

15 :1.5V
18 :1.8V

Package Packing

W : SOT25

Lead Free

L : Lead Free

G : Green

7 : Tape & Reel

20 :2.0V
25 :2.5V

28 :2.8V
29 :2.9V
30 :3.0V
33 :3.3V
35 :3.5V

Device

AP131-XXWL-7

Lead-free

AP131-XXWG-7

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf

Package

Code

W SOT25
W SOT25

Packaging

(Note 2)

.

.

Quantity Part Number Suffix

3000/Tape & Reel -7
3000/Tape & Reel -7

7” Tape and Reel

AP131 Rev. 7 1 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

Pin Assignment

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

( Top View )

Pin Description

Pin Name Description

IN Input Voltage

GND Ground

EN Enable Pin
BP Band-gap

OUT Output Voltage

Block Diagram

1IN

OUT

5
2
3

EN BP

4

SOT25

IN

EN

Current

Limit

Enable

-

+

Bandgap

Error

Amp

1.08V

OUT

Thermal

Shutdown

BP

AP131 Rev. 7 2 of 7 FEBRUARY 2009

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GND

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

Absolute Maximum Ratings

Symbol Parameter Rating Unit

VCC Input Voltage +6 V

TOP Operating Junction Temperature Range -40 to +125 ºC
TST Storage Temperature Range -65 to +150 ºC

PD Power Dissipation, PD @ TA = 25ºC SOT25 250 mW

Recommended Operating Conditions

Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

AP131 Rev. 7 3 of 7 FEBRUARY 2009

Input Voltage 2.7 5.5 V
Output Current 0 300 mA
Operating Ambient Temperature -40 85

www.diodes.com © Diodes Incorporated

°C

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

Electrical Characteristics

T

= 25ºC, C

A

Symbol Parameter Conditions Min Typ. Max Unit

V

DROP

I

LIMIT

I

short

ΔV

ΔV

ΔV

PSRR Ripple Rejection

ISB Standby Current IL = 0mA, V

IQ Quiescent Current IL = 0mA, V

IEN Enable Pin Current - - < 0. 1 μA

V

ENON

V

ENOFF

T

DELAY

θ

θ

Notes: 3. Dropout voltage is defined as the input to output differential voltage. Dropout is measured at constant junction temperature by using pulsed ON

time, and the criterion is V

4. Current limit is measured at constant junction temperature by using pulsed testing with a low ON time.

5. Regulation is measured at constant junction temperature by using pulsed testing with a low ON time.

6. Guaranteed by design.

7. Test conditions for SOT25: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

= 1µF, C

IN

= 10µF, unless otherwise specified.

OUT

Dropout Voltage (Note 3) IL = 300mA - 400 500 mV

Current Limit (Note 4) V

Short Circuit Current V

Line Regulation

LINE

Load Regulation (Note 5) IL = 1~300mA, V

LOAD

Output Voltage Accuracy I

OUT

Output Voltage Temperature
Coefficient (Note 6)

= 5V, V

IN

< 1.05V - 150 300 mA

OUT

I

=1mA, V

OUT

to 5.5V

= 1mA, V

L

= 0V 350 450 - mA

OUT

IN =( VOUT

= 5V -2 - +2 %

IN

+1V )

= 5V - 30 35 mV

IN

- 0.1 0.3 %/V

- 50 150

PPM/

ºC
F = 100Hz,
C

= 1μF, CO = 10uF,

IN

I

= 100mA

L

= 5V, EN = 0V - - 5 μA

IN

= 5V, EN = 5V - 50 100 μA

IN

Enable Pin Voltage

Output OFF 0 - 0.8 V
Enable Delay Time

Thermal Resistance

JA

JC

Junction-to-Ambient
Thermal Resistance

Junction-to-Case

inside target value ±2%. This test is skipped at the condition of VIN<3V.

OUT

Output ON 1.5 - VIN V

= 0.1μF, C

C

BP

= 30mA

I

OUT

OUT

= 1μF,

SOT25 (Note 7) 163

SOT25 (Note 7) 53

- 60 - dB

- 8 - μS

O

C/W

O

C/W

AP131 Rev. 7 4 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

)

)

Typical Characteristics

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

AP131 PSRR vs. Frequency

70
65
60
55
50
45
40
35
30

PSRR (dB)

25
20
15
10

5
0

10 100 1K 10K 100K 1M

Frequency (Hz

AP131 GND Current vs. Input Voltage

55
50
45
40
35
30
25
20
15

GND Current (uA)

10

5
0

00.511.522.533.544.555.56

Input Voltage (V)

Typical Application Circuit

3.095

AP131 V

3.09

3.085

3.08

3.075

3.07

3.065

out

3.06

V

3.055

3.05

3.045

3.04

3.035

3.03

3.025

3.02

0 30 60 90 120 150 180 210 240 270 300 330

vs. Load Current

out

Load Current (uA

450
400
350
300
250
200

Dropout (V)

150
100

50

0

AP131 Dropout vs. Load

V

=3.3V

OUT

0 50 100 150 200 250 300

Load (Io) (mA)

ON

AP131

V

IN

C

IN

GND

1uF

IN

EN

OUT

BP

C

BP

0.1uF

EN

OFF

V

OUT

C

OUT

10uF

AP131 Rev. 7 5 of 7 FEBRUARY 2009

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Marking Information

(1) SOT25

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

( Top View )

5

7

4

XX : Identification code

Y

: Year 0~9

XX

W X

Y

: Week : A~Z : 1~26 week;

W

a~z : 27~52 week; z represents
52 and 53 week

: a~z : Lead Free

1 2 3

X

A~Z : Green

Part Number Package Identification Code

AP131-15W SOT25 DA
AP131-18W SOT25 DD
AP131-20W SOT25 DF
AP131-25W SOT25 DK
AP131-28W SOT25 DN
AP131-29W SOT25 DO
AP131-30W SOT25 DP
AP131-33W SOT25 DS
AP131-35W SOT25 DU

Package Information (All Dimensions in mm)

AP131 Rev. 7 6 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

IMPORTANT NOTICE

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.

LIFE SUPPORT

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.

AP131 Rev. 7 7 of 7 FEBRUARY 2009

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