Diodes PAM2863 - Manual (Page 2)

PAM2863
Document number: DSxxxxx Rev. 1 - 0
2 of 11
www.diodes.com
October 2012
© Diodes Incorporated
PAM2863
A Product Line of
Diodes Incorporated
Typical Applications Circuit
Pin Descriptions
Pin
Number
Pin
Name
Function
5, 6 LX Drain of NDMOS switch.
3, 7, 8 GND Ground (0V)
4 VSET
• Multi-function On/Off and brightness control pin:
• Leave floating for normal operation.
• Drive to voltage below 0.2V to turn off output current
• Drive with DC voltage (0.3V < VSET< 2.5V) to adjust output current from 12% to 100% of I
OUTnom
• Drive with PWM signal from open-collector or open-drain transistor, to adjust output
current. Adjustment range 1% to 100% of I
OUTnom
for f < 500Hz
• Connect a capacitor from this pin to ground to increase soft-start time. (Default soft-start time = 0.1ms.
Additional soft-start time is approx.1.5ms/1nF)
2 ISENSE Connect resistor RS from this pin to VIN to define nominal average output current IOUTnom = 0.1/Rs
1 VIN Input voltage (6V to 40V). Decouple to ground with 10μF or higher X7R ceramic capacitor close to device.