AP3403

Document number: DS36839 Rev. 3 - 2

7 of 9

www.diodes.com

May 2015

© Diodes Incorporated

AP3403

A Product Line of

Diodes Incorporated

Application Information

Please refer to the Typical Applications Circuit, and to set the circuit parameters please refer to the following descriptions.

Under Voltage Lockout (UVLO) Circuit

switch built-

higher than UVLO released voltage, the IC will restart the operation.

Short Circuit Protection and Recovery

AP3403 will enter cycle by cycle current limit mode until the current under OCP threshold.

Input Over Voltage Protection

When input voltage of AP3403 is near 6.25V, the IC will enter Input-Over-Voltage-Protection. It would be shut down and there will be no output

voltage in this state. As the input voltage goes down below 6V, it will leave input OVP and recover the output voltage.

Over Temperature Protection

The internal thermal temperature protection circuitry is provided to protect the integrated circuit in the event that the maximum junction

temperature is exceeded. When the junction temperature exceeds +140ºC, it shuts down the internal control circuit and switching power MOSFET.

The AP3403 will restart automatically under the control of soft start circuit when the junction temperature decreases to +100ºC.

Ordering Information

AP3403 FLJ - 7

Packing

Package

7 : Tape & Reel

FLJ : U-DFN1616-6

Part Number

Package Code

Packaging

7” Tape and Reel

Quantity

Part Number Suffix

AP3403FLJ-7

FLJ

U-DFN1616-6

3000/Tape & Reel

-7

Marking Information

U-DFN1616-6 (Type G)

(Top View)

XX

Y : Year : 0~9

X : Internal Code

XX : Identification Code

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

a~z : 27~52 week; z represents

52 and 53 week

Y W X

Part Number

Package

Identification Code

AP3403FLJ-7

U-DFN1616-6

DE