L5100
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
SW
GND
FB
SHDN
VIN
DESCRIPTION
Switch. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
Ground. Connect directly to local ground plane.
Feedback. Reference voltage is 95mV. Connect cathode of lowest LED and resistor
here. Calculate resistor value according to the formula: RFB = 95mV/ILED
Shutdown. Connect to 1.5V or higher to enable device; 0.4V or less to disable device.
Input Supply Pin. Must be locally bypassed.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R103-024.D