Diodes AP3032 - Manual (Page 6)

Data Sheet
WHITE LED STEP-UP CONVERTER AP3032
Dec. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
6
Typical Performance Characteristics
The WLED forward voltage (V
F
) is 3.2V at I
LED
=20mA, unless otherwise noted.
Figure 4. Efficiency vs. Input Voltage Figure 5. Switch Current Limit vs. Duty Cycle
Figure 6. Minimum Operating Voltage vs. Temperature Figure 7. Quiescent Current vs. Input Voltage
3 4 5 6 7 8 9
0
10
20
30
40
50
60
70
80
90
100
E
ff
ici
en
cy
(%
)
Input Voltage (V)
T
A
=25 O C
LED:7S4P,20mA Per Channel
0 10 20 30 40 50 60 70 80 90
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
T
A
=25 o C
C
u
rren
t Li
mit
(A)
Duty Cycle (%)
-60 -40 -20 0 20 40 60 80 100 120 140
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
M
inimum O
p
e
rat
ing Voltage (V)
Temperature ( o C)
2 3 4 5 6 7 8 9
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Quie
s
c
en
t Current
(m
A)
Input Voltage (V)
T
A
= -40 o C
T
A
= 25 o C
T
A
= 85 o C