AP8803

Document number: DS31970 Rev. 5 - 2

2 of 10

www.diodes.com

August 2012

© Diodes Incorporated

AP8803

Pin Descriptions

Pin Name

Function

SW

Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.

GND

GND pin

SET

Set Nominal Output Current Pin. Configure the output current of the device.

CTRL

Dimming and On/Off Control Input.

•

Leave floating for normal operation.

•

Drive to voltage below 0.2V to turn off output current

•

•

Input voltage of 0.2V or lower forces the device into low current standby mode and shuts off the output. A PWM signal

allows the output current to be adjusted above or below the level set by the resistor connected to SET input pin.

Input Supply Pin. Must be locally decoupled to GND with > 2.2µF X7R ceramic capacitor.

Functional Block Diagram

Symbol

Parameter

Rating

Unit

-0.3 to +30

V

Transient (t < 0.5s)

40

SW voltage

-0.3 to +30

V

Transient (t < 0.5s)

40

CTRL pin input voltage

-0.3 to +6

V

Switch current

1.25

A

Human Body Model ESD

500

V

Machine Model ESD

<100

V

Junction Temperature

150

°C

Lead Temperature Soldering

300

°C

Storage Temperature Range

-65 to +150

°C

Caution:

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;

functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be

affected by exposure to absolute maximum rating conditions for extended periods of time.

Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when

handling and transporting these devices