XRP6840 Exar Corporation, XRP6840 Datasheet - Page 9

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XRP6840

Manufacturer Part Number
XRP6840
Description
4.3a Supercapacitor Flash Led Driver With I2c
Manufacturer
Exar Corporation
Datasheet

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© 2009 Exar Corporation
200mA. CH1=RESET_N, CH2=LEDx, CH4=I
Fig. 21: Figure 21: Flash Mode Enable From Shutdown
Fig. 19: LED Current Settling Time From Shutdown to
Fig. 17: LED Current Settling Time: 200mA to 0mA.
CH1=SDA, CH2=SCL, CH4=I
CH1=RESET_N, CH2=RDY, CH3=V
LED
=0.1A/div
LED
OUT
4
4
=0.2A/div
.
.
3
3
A
A
S
S
u
u
9/17
p
p
e
e
r
r
Fig. 18: LED Current Settling Time 200mA to Shutdown.
c
c
a
a
CH1=RESET_N, CH2=LEDx, CH4=I
p
p
Fig. 20: Flash Mode Shutdown. CH1=RESET_N,
a
a
c
c
i
i
t
t
o
o
r
r
F
F
CH2=RDY, CH3=V
l
l
a
a
s
s
h
h
L
L
E
E
D
D
D
D
OUT
r
r
i
i
v
v
LED
e
e
X
X
=0.2A/div
r
r
R
R
w
w
P
P
Rev. 1.0.0
i
i
6
6
t
t
h
h
8
8
I
I
4
4
2
2
0
0
C
C

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