© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN5702 • Rev. 1.0.3

3

WLCSP Pin Configuration

C1

B1

A1

A2

C3

B3

A3

C2

D1

D3

D2

B2

A4

C4

D4

B4

Bumps Facing Down

C4

B4

A4

C3

B3

A3

D4

D3

C1

B1

A1

A2

C2

D1

D2

B2

Bumps Facing Up

Figure 2. WLCSP-16, 0.4mm Pitch, 1.61 x 1.61mm

Pin Definitions

Pin #

Name

Description

D2

VIN

Input Supply Voltage

B4

GND

Ground

D1

VOUT

Charge Pump Output Voltage

. Connect to LED anodes.

D3 ,D4

C1+, C1–

Charge pump flying capacitor #1

C3, C4

C2+, C2–

Charge pump flying capacitor #2

A1,A2

B1,B2

C1,C2

D2A, D1A

D4,D3

D6,D5

LED Outputs

A4

EN / PWM

Enable / PWM

dimming input. By default, this pin acts as a simple enable / disable function.

When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all functions

(including I

functions as a PWM dimming input for Group A. To restore the Enable function, the General

Purpose register bit 7 must be set LOW.

B3

SDA

I

A3

SCL

I