AP7343

Document number: DS37952 Rev. 4 - 2

2 of 18

www.diodes.com

November 2016

© Diodes Incorporated

AP7343

Pin Descriptions

Pin Number

Pin Name

Function

X2-

DFN1010-4

(Type B)

SOT25

1

5

VOUT

Power Output Pin

2

2

GND

Ground

3

3

EN

Enable Pin

This pin should be driven either high or low and must not be floating. Driving this pin high enables

the regulator, while pulling it low puts the regulator into shutdown mode

4

1

VIN

Power Input Pin

—

4

NC

No connection

EP

—

Exposed Pad

In PCB layout, prefer to use large copper area to cover this pad for better thermal dissipation, then

connect this area to GND or leave it open. However, do not use it as GND electrode function alone

Functional Block Diagram

GND

VOUT

VIN

EN

Current Limit

VREF

Thermal

Shutdown

GND

VOUT

VIN

EN

Current Limit

VREF

Thermal

Shutdown

AP7343 (With Discharge)

AP7343 (Without Discharge)

Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Ratings

Unit

ESD HBM

Human Body Mode ESD Protection

> 2

KV

ESD MM

Machine Mode ESD Protection

> 200

V

VIN

Input Voltage

6.0

V

VEN

Input Voltage for EN Pin

6.0

V

VOUT

Output Voltage

-0.3 to VIN + 0.3

V

IOUT

Output Current

400

mA

PD

Power Dissipation

400

mW

TA

Operating Ambient Temperature

-40 to +85

°C

TSTG

Storage Temperature

-55 to +125

°C

Note:

4. a). Stresses beyond 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 conditions is not implied. Exposure to absolute-maximum-rated conditions for extended period may affect

device reliability.

b). Ratings apply to ambient temperature at +25°C. The JEDEC High-K board design used to derive this data was a 2 inch x 2 inch multilayer board with

1oz. internal power and ground planes and 2oz. copper traces on the top and bottom of the board.

Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Min

Max

Unit

VIN

Input Voltage

1.7

5.25

V

IOUT

Output Current

0

300

mA

TA

Operating Ambient Temperature

-40

+85

°C