WLCSP Pin Configuration
A1
B1
C1
D1
A2
B2
C2
D2
A3
B3
C3
D3
A4
B4
C4
D4
A4
B4
C4
D4
A3
B3
C3
D3
A2
B2
C2
D2
A1
B1
C1
D1
Bumps Facing Down
Bumps Facing Up
Figure 2. WLCSP-16, 0.4mm Pitch, 1.61mm x 1.61mm
Pin Definitions
Pin #
D2
B4
D1
D3,D4
C3,C4
A1, A2, B1,
B2, C1, C2
A4
B3
A3
Name
VIN
GND
VOUT
C1+, C1 –
C2+, C2 –
D2A, D1A, D4A,
D3A, D6B, D5B
EN
PWMA
PWMB
Description
Input Voltage . Connect to 2.7 – 5.5V DC input power source.
Ground
Charge Pump Output Voltage . Connect to LED Anodes.
C1 . Charge pump flying capacitor #1.
C2 . Charge pump flying capacitor #2.
LED Outputs
Enable . When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset
and all functions are disabled.
Group-A PWM Dimming Input
Group-B PWM Dimming Input
? 2009 Fairchild Semiconductor Corporation
FAN5701 ? Rev. 1.0.3
3
www.fairchildsemi.com
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