Diodes AP3605 - Manual (Page 8)

8
Jan. 2013 Rev. 1. 8 BCD Semiconductor Manufacturing Limited
4-Channel Charge Pump LED Driver with Current Balancing and Wide Range PWM Dimming AP3605
Data Sheet
Typical Performance Characteristics (Continued)
Figure 14. Turn on Characteristic Figure 15. Turn off Characteristic
V
EN
V
OUT
V
D
I
IN
V
EN
V
OUT
V
D
I
IN
Figure 13. Efficiency vs. Input Voltage
0 20 40 60 80 100 120
50
55
60
65
70
75
80
85
90
95
100
Ef
ficiency
(%)
Output Current (mA)
Figure 12. Efficiency vs. Output Current
2.5 3.0 3.5 4.0 4.5 5.0 5.5
50
55
60
65
70
75
80
85
90
95
100
E
ffi
ci
en
cy
(
%
)
Input Voltage (V)
I
OUT
=20mA
I
OUT
=40mA
I
OUT
=60mA
I
OUT
=80mA
I
OUT
=100mA
I
OUT
=120mA
(V
IN
=3.5V, V
EN
=V
IN
, R
ISET
=1.8k Ω , C
FLY1
=C
FLY2
=C
IN
=C
OUT
=1 μ F, T
A
=25 o C, V
D1
=V
D2
=V
D3
=V
D4
=3.4V, unless
otherwise specified. V
OUT
is the output voltage when VOUT1 and VOUT2 are connected.)