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AS3685A-ZDFT-2Y80
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
Page 10
ams Datasheet
Document F
eedback
[v2-23] 2016-Mar-30
AS3685A/AS3685B −
T
ypical Operating Characteristics
Fig
ure 13:
Efficiency vs. Battery Voltage (with L
umiled PWF1)
Fig
ure 14:
Battery Curr
ent vs. Battery V
oltage (with Lumiled PWF1)
Ty
p
i
c
a
l
O
p
e
r
a
t
i
n
g
Char
acteristics
40
50
60
70
80
90
100
2.8
3.2
3.6
4.
0
4.4
4.
8
5.2
V
BAT
[V
]
Eff
iciency of
Charge Pump [%]
I
LE
D
=7
0
0m
I
LE
D
=6
00
m
I
LE
D
=5
0
0m
I
LE
D
=4
00
m
I
LE
D
=3
00
m
I
LE
D
=2
0
0m
I
LE
D
=1
00
m
I
LE
D
=50m
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
2.8
3.2
3.
6
4.
0
4.4
4.8
5.2
V
BAT
[
V
]
I
BAT
[A
]
I
LE
D
=
700m
I
LE
D
=6
0
0m
I
LE
D
=5
0
0m
I
LE
D
=4
00
m
I
LE
D
=3
00
m
I
LE
D
=2
00
m
I
LE
D
=1
00
m
I
LE
D
=5
0m
ams Datasheet
Page 11
[v2-23] 2016-Mar-30
Document Feedback
AS3685A/AS3685B −
Typical Opera
ting Characteristics
Fig
ure 15:
LED Current I(ILED) v
s. Batter
y V
oltage (with Lumiled PWF1)
Fig
ure 16:
Linearity of Current Sink
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
2
.
83
.
23
.
64
.
04
.
44
.
85
.
2
V
BAT
[V
]
I
LED
[A
]
I
LE
D
=
700m
I
LE
D
=
600m
I
LE
D
=
500m
I
LE
D
=
400m
I
LE
D
=
300m
I
LE
D
=
200m
I
LE
D
=
100m
I
LE
D
=
50m
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
.0
0
.5
1
.0
1.5
2
.0
2
.5
V
ILE
D
[V
]
I
LED
[A
]
I
LE
D
=
700m
I
LE
D
=
600m
I
LE
D
=
500m
I
LE
D
=
400m
I
LE
D
=
300m
I
LE
D
=
200m
I
LE
D
=
100m
I
LE
D
=
50m
Page 12
ams Datasheet
Document F
eedback
[v2-23] 2016-Mar-30
AS3685A/AS3685B −
T
ypical Operating Characteristics
Fig
ure 17:
I(ILED) v
s. R(ISET
) (Flash and T
orch Mode
of AS3685A)
Fig
ure 18:
Startup of AS3685A -- I
LED
Current
0
200
400
600
800
1000
1200
0k
20k
40k
60k
80
k
100k
120k
140k
R
ISE
T
[Ohm
]
I
LED
[mA
]
Fl
ash
Mode
To
r
c
h M
o
d
e
I
LED
500mA/div 100μs/div
V
BAT
=3.3V, I
LED
=700mA
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
AS3685A-ZDFT-2Y80
Mfr. #:
Buy AS3685A-ZDFT-2Y80
Manufacturer:
ams
Description:
LED Lighting Drivers Ultra Small 1000mA Charge Pump Wh LED
Lifecycle:
New from this manufacturer.
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