Diodes AP3036/A - Manual (Page 10)

Preliminary Datasheet
WHITE LED STEP-UP CONVERTER AP3036/A
Jul. 2012 Rev. 1.3 . BCD Semiconductor Manufacturing Limited
10
Typical Performance Characteristics (Continued)
The WLED forward voltage (V
F
) is 3.45V at I
F
=20mA, unless otherwise noted.
Time 1 µs/div Time 10µs/div
Figure 20. Output Voltage Ripple Figure 21. PWM Dimming
(V
IN
=V
CTRL
=3.6V, I
LED
=20mA, 5 LEDs) (V
IN
=3.6V, V
PWM
=2.5V, f
PWM
=100kHz, Duty=50%, 5 LEDs)
V
IN
2V/div
V
SW
10V/div
V
OUT 1
(AC)
100mV/div
I
L
100mA/div
V
IN
2V/div
V
SW
10V/div
V
OUT
10V/div
I
LED
10mA/div