June 21-07 revH

SP7680: Complete Backlight Solution



2007 Sipex Corporation

Page 6

PIN DESCRIPTION

PIN #

PIN NAME

DESCRIPTION

6

Input voltage for the regulator. Connect a 2.2µF decoupling capacitor

between this pin and ground.

12-16

1,2

LED1-LED 5

LED6,LED7

controlled by the serial interface. The current level through each pin is

internally matched within 3%. This current value can be programmed

to any level for MAIN or SUB LEDs with 0.5mA step (64 steps total).

Voltage at these pins is internally monitored to control the switching

between 1x and 1.5x mode in order to ensure the best possible

efficiency.

5

VOUT

Output of the charge pump. Place a 1µF decoupling capacitor from

this pin to ground. This voltage is regulated by the 1x or 1.5x charge

pump to create voltage sufficient to operate the current sources.

11

GND

Ground pin.

3,4

SDA,SCL

Clock and data inputs for I

7,8

C1-, C1+

Connect 0.47µF ceramic capacitor between these pins.

9,10

C21, C2+

Connect 0.47µF ceramic capacitor between these pins.

-

Thermal Pad

Connect to GND.

SP7680 FUNCTIONAL DIAGRAM

2.2uF