Data Sheet
WHITE LED STEP-UP CONVERTER
AP3019A
Typical Performance Characteristics (Continued)
WLED forward voltage is 3.45V at IF=20mA, unless otherwise noted.
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
450
400
350
300
250
200
150
100
50
Falling Edge
Rising Edge
50
100
150
200
250
300
-50
-25
0
25
50
75
100
Junction Temperature (OC)
Switch Current (mA)
Figure 16. Saturation Voltage vs. Switch Current
Figure 17. CTRL Pin Voltage vs.
Junction Temperature
Mar. 2010 Rev. 1.7
BCD Semiconductor Manufacturing Limited
9