XRP6840EVB Exar Corporation, XRP6840EVB Datasheet - Page 4
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XRP6840EVB
Manufacturer Part Number
XRP6840EVB
Description
Supercapacitor Flash LED Driver Eval. Board
Manufacturer
Exar Corporation
Specifications of XRP6840EVB
Core Chip
XRP6840
Output Current
4.3A
No. Of Outputs
1
Tool / Board Applications
Lighting-LED, High Bright LED, LED Driver, Flourescent, Backlighting
Current - Output / Channel
4.3A, 3x 1.5A
Outputs And Type
4, Non-Isolated
Features
Supercapacitor Flash
Voltage - Input
2.7 ~ 5.5 V
Utilized Ic / Part
XRP6840
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
1016-1337
Default I
I
V
Note 1: All parameter tested at T
Note 2: Current into all LED pins is up to 400mA continuously in Torch 1.5x mode.
Note 3: LED current matching is calculated by this equation:
Note 4: Guaranteed by design.
Note 5: Cb = total capacitance of one bus line in pF. tR and tF measured between 0.3 x V
Note 6: I
Note 7: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
© 2009 Exar Corporation
Serial Clock Frequency
Bus Free Time between a STOP
and a START
Hold Time, Repeated START
Condition
STOP Condition Setup Time
Data Hold Time
Input Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of Both SDA and SCL
Signals, receiving
Fall Time of Both SDA and SCL
Signals, Receiving
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for each Bus
Line
I
clears
2
IN
2
C Startup Time after UVLO
C T
= 3.3V, T
IMING
SINK
2
Parameter
C slave 7-bit address for XRP6840 is 0101000b
≤6mA. Cb =total capacitance of one bus line in pF. t
A
= –40°C to 85°C, T
C
100% where I
HARACTERISTICS
AVG
A
is the average current of all channels.
J
t
= 25°C. Specifications over temperature are guaranteed by design.
Symbol
t
HD,DAT(OUT)
= –40°C to 125°C. Unless otherwise noted.
HD,DAT(IN)
t
t
t
HD_STA
t
SU,STO
SU,DAT
t
t
t
t
f
HIGH
Cb
LOW
t
F.TX
SCL
BUF
t
SRT
t
SP
R
F
0.1Cb
0.1Cb
0.1Cb
20 +
20 +
20 +
Min.
4
4
225
100
1.3
0.6
0.6
1.3
0.6
0
0
.
.
3
3
A
A
S
S
Typ.
u
u
4/17
p
p
e
e
r
r
R
c
c
and t
a
a
Max.
400
900
900
300
300
250
400
p
p
50
1
a
a
F
measured between 0.3 x V
c
c
i
i
t
t
o
o
Units
KHz
r
r
ms
ms
ms
µs
µs
ns
ns
ns
ns
ns
ns
ns
pF
µs
F
F
l
l
a
a
s
s
Note 4,5
Note 4,5
Note 4,5,6
Note 7
Note 4
Note 4
h
h
DD
and 0.7 x V
L
L
E
E
D
D
D
D
Conditions
DD
r
r
and 0.7 V
i
i
DD
v
v
.
e
e
X
X
r
r
R
R
w
w
P
P
DD
Rev. 1.0.0
i
i
.
6
6
t
t
h
h
8
8
I
I
4
4
2
2
0
0
C
C