XRP6840 Exar Corporation, XRP6840 Datasheet - Page 2

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

ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
V
SCL, SDA, RDY, RESET_N, CAP ............ -0.3V to V
C1P, C2P, C1N, C2N ........................... -0.3V to V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................... Internally Limited (Note 1)
Lead Temperature (Soldering, 10 sec) ................... 260°C
ESD Rating (HBM - Human Body Model) All Pins ......... 2KV
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for T
range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation.
Typical values represent the most likely parametric norm at T
otherwise indicated, V
GND) = 47µF. T
© 2009 Exar Corporation
Operating Input Voltage Range
UVLO Turn-On Threshold
UVLO Hysteresis
Operating Input Current
Including In-rush Current
Torch Mode Input Current
Torch Mode Input Current
Standby Input Current
Shutdown Supply Current
Shutdown I
Torch Mode Incremental current
Step
Flash Mode Incremental current
Step
Maximum Current in Torch Mode
per Channel
Maximum Current in Flash Mode
Output Current DAC Resolution
DAC Current Accuracy
IN
, V
OUT
, LED
Parameter
LED
1
, LED
Current
A
= –40°C to 85°C, T
2
, LED
IN
= 3.4V, V
3
.......................... -0.3V to 6.0V
LED
J
Min.
-10
-12
-18
= 0.8V, C
= –40°C to 125°C.
2.7
2.2
J
= 25°C only; limits in applying over the full Operating Junction Temperature (T
IN
Typ.
4
4
100
600
202
302
200
300
300
440
2.4
4.3
30
20
30
1
0
3
4
= 47µF, C
.
.
IN
IN
3
3
+0.3V
+0.3V
A
A
S
S
Max.
u
u
725
228
340
5.5
2.6
40
10
12
18
2/17
F1
3
p
p
J
= C
e
e
= 25°C, and are provided for reference purposes only. Unless
r
r
OPERATING RATINGS
Input Voltage Range V
Junction Temperature Range .................... -40°C to 125°C
Thermal Resistance θ
c
F2
c
a
a
= 0.47µF, C
Units
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
p
p
µA
µA
Bit
Bit
%
V
V
A
a
a
c
c
i
i
t
t
o
o
•
•
•
•
•
•
r
r
OUT1
V
V
1x, 1.5x or 2x Mode
1x Mode, I
1.5x Mode, I
All LEDs are Off, T
R
STATUS1 Register [B7 B6] =00
Measure LED1 – LED3
XRP6840A, Table 6, averaged from all
channels
XRP6840B, Table 6, averaged from all
channels
XRP6840A, Table 5, averaged from all
channels
XRP6840B, Table 5, averaged from all
channels
XRP6840A, Note 2, averaged from all
channels
XRP6840B, Note 2, averaged from all
channels
Flash Mode, Measured current into all LED
pins
Flash Mode
Torch Mode
120mA < I
180mA < I
I
I
F
F
LED
LED
IN
IN
ESET_N
l
l
(V
a
a
rising
falling
≤ 120mA, XRP6840A
≤ 180mA, XRP6840B
OUT
JA
s
s
IN
h
h
................................... 30.8°C/W
= 0V
............................... 2.7V to 5.5V
to CAP) = 47µF and C
L
L
OUT
LED
LED
E
E
OUT
D
= 200mA
< 1.6A for XRP6840A
< 1.6A for XRP6840B
D
Conditions
= 200mA
D
D
J(max)
r
r
i
i
v
v
= 85
e
e
X
X
r
r
R
R
o
C
w
w
P
P
OUT2
Rev. 1.0.0
i
i
6
6
t
t
h
h
(CAP to
8
8
I
I
4
4
2
2
0
0
C
C
J
)