Diodes AP139 User Manual

AP139

300mA LOW-NOISE CMOS LDO

Features

• Very Low Dropout Voltage

• Low Current Consumption: Typ. 45μA, max. 60uA

• Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V

3.3V, and 3.5V

• Guaranteed 300mA Output

• Input Range from 2.7 up to 5.5V

• Thermal Shutdown

• Current Limiting

• Stability with Low ESR Capacitors

• Low Temperature Coeff icient

• Lead Free Package: SOT25

• SOT25: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Personal Communication Devices

• Home Electric/Electronic Appliances

• PC Peripherals

• Battery-Powered Devices

Ordering Information

AP139 - XX W X - 7

General Description

The AP139 is a positive voltage linear regulator utilizing CMOS
technology. The features that include low quiescent current
(45μA typ.), low dropout voltage, and high output voltage
accuracy, make it ideal for battery applications. EN input
connected to the device will produce a low bias current.
The space-saving SOT25 package is attractive for “pocket” and
“hand held” applications.

This rugged device has both thermal shutdown, and current limit
protections to prevent device failure under the “worst” operating
conditions.

In a low noise, regulated supply application, a 10nF capacitor is
necessary to be placed in between Bypass and Ground.

The AP139 is stable with a low E SR out put ca paci tor of 1.0μF or
greater.

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
30 :3.0V

33 :3.3V
35 :3.5V

Device

AP139-XXWL-7

Lead-free

AP139-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

AP139 Rev. 6 1 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

AP139

300mA LOW-NOISE CMOS LDO

Pin Assignments

( Top View )

V

OUT

5 4

1 32

V

IN

Block Diagram

V

IN

1uA

AP139

GND

SOT25

BYP

EN

Current

Limit

Pin Descriptions

Pin

Name

V

GND 2 Ground

EN 3 Enable Pin
BYP 4 Bypass Signal Pin
V

Pin No. Description

1 Power Supply

IN

5 Output

OUT

V

OUT

BYP

Thermal

Shutdown

EN

-

AMP

+

Vref

R1

R2

GND

Absolute Maximum Ratings

Symbol Parameter Rating Unit

VIN Input Voltage +6 V

I

Output Current PD/(VIN-VO) mA

OUT

V

Output Voltage GND - 0.3 to VIN+ 0.3 V

OUT

ESD Classification B

TOP Operating Junction Temperature Range -40 to +125 ºC

TMJ Maximum Junction Temperature 150 ºC

PD Internal Power Dissipation 250 mW

AP139 Rev. 6 2 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

AP139

300mA LOW-NOISE CMOS LDO

Recommended Operating Conditions

Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

Electrical Characteristics (T

Symbol Parameter Test Conditions Min Typ. Max Unit

VIN Input Voltage

IQ Quiescent Current IO = 0mA - 45 60 μA

I

Standby Current V

STB

V

OUT

V

DROPOUT

I

Output Current 300 - - mA

OUT

I

Current Limit V

LIMIT

I

Short Circuit Current

short

△V

LINE

△V

LOAD

PSRR Power Supply Rejection

PSRR Power Supply Rejection

VEH
VEL Output OFF - - 0.8 V

IEN Enable Pin Current - - <0.1 μA

OTS
OTH

θ

Thermal Resistance SOT25 (Note 4) 226 ºC/W

JA

θ

Thermal Resistance SOT25 (Note 4) 34 ºC/W

JC

Notes: 3. V

4. Test conditions for SOT25: Devices mounted on FR-4 PC board, MRP, 1 oz. copper, single sided, calibrate at TJ=85 ºC, measure at TA=25 ºC,

no heat Sink, no air flow.

AP139 Rev. 6 3 of 7 FEBRUARY 2009

Input voltage

2.7 5.5 V
Output Current 0 300 mA
Operating Ambient Temperature

Output Voltage Accuracy I
V

Temperature

OUT

Coefficient

Dropout Voltage

Line Regulation I
Load Regulation I

= +25ºC, unless otherwise noted)

A

= 5.0V, V

IN

= 1mA, V

O

= 0V, VEN < VEL - 2.0 3.0 μA

OUT

= 5V -2 - 2 %

IN

- 50 - ppm/
I

= 1mA to 300mA,

O

V

= V

OUT

> 1.05V 300 450 - mA

OUT

V

= 5V, V

cc

= 1mA, V

OUT

= 1mA to 300mA, V

O

I

= 100mA,

O

= 2.2μF ceramic

C

O

= 100mA,

I

O

C

= 2.2μF ceramic,

O

C

= 20nF

BYP

O(NOM)

out

- 1.5%

< 1.05V

= (V

IN

V

+1V) to 5.5V - 0.1 0.3 %

OUT

= 5V - 0.3 1 %

IN

f = 1KHz - 60 ­f = 10KHz - 50 ­f = 100KHz - 40 ­f = 1KHz - 75 ­f = 10KHz - 55 ­f = 100KHz - 30 -

-40 85

Note 3

≥2.8V

O

- - 0.45 V

- 150 300 mA

- 5.5 V

Output ON 1.7 - - V

EN Input Threshold

Over Temperature
Shutdown
Over Temperature
Hysteresis

= V

OUT

+ V

DROPOUT.

IN(MIN)

- 130 -

- 20 -

www.diodes.com © Diodes Incorporated

°C

dB

dB

o

C

o

C

o

C