XRP6840EVB Exar Corporation, XRP6840EVB Datasheet - Page 9

• 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

© 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