Analog Devices DC2630A Manual page 4

DEMO MANUAL DC2630A
TEST RESULTS
100
95
90
85
80
75
70
65
60
6 8 10 12 14 16 18 20
V (V)
IN
dc2630a F02
Figure 2. DC2630A Input Voltage vs Efficiency – 4× Channels Powering 16 White LEDs Per Channel at 125mA
244Hz PWM FREQUENCY
I
LED
50mA/DIV
500:1
1250:1
dc2630a F03
1µs/DIV
2
Figure 3. DC2630A PWM Dimming Using I C Settings for 1250:1 and 500:1 Dimming Ratios
Rev. 0
4