95
20
90
16
LED CURRENT (mA)
85
EFFICIENCY (%)
04867-0-010
12807570
8
4
6560
04867-0-013
020
4060DUTY CYCLE (%)
80100
0102030
405060DUTY CYCLE (%)
708090100
Figure 9. ILED (mA) vs. PWM Dimming (Varying Duty Cycle),
Six LEDs Enabled, Frequency = 1 kHz
300
Figure 12. LED Efficiency vs. Varying Duty Cycle of 1 kHz PWM Signal,
Six LEDs Enabled, 20 mA/LED
250
SUPPLY CURRENT
ICC (mA
)
200
150
100
02.6
04867-0-011
3.03.4
3.84.24.6SUPPLY VOLTAGE (V)
5.05.4
CH3 1.00V
04867-0-014
50
V
Figure 10. Input Current vs. Supply Voltage,
Six LEDs Enabled Figure 13. Soft Start Showing the Initial In-Rush Current and VOUT Variation,
Six LEDs @ 20 mA/LED, VCC
= 3.6 V
VCCVCC
VOUT
04867-0-012
VOUT
04867-0-015
W
W
M 400ns
W
W
M 400ns
Figure 11. 1.5× Mode Operating Waveforms Figure 14 .2× Mode Operating Waveform
Rev. C | Page 7 of 20