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XRP6840BILB-F Datasheet(PDF) 2 Page - Exar Corporation

Part # XRP6840BILB-F
Description  4.3A Supercapacitor Flash LED Driver with I2C
Download  17 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRP6840BILB-F Datasheet(HTML) 2 Page - Exar Corporation

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© 2009 Exar Corporation
2/17
Rev. 1.0.0
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.
VIN, VOUT, LED1, LED2, LED3.......................... -0.3V to 6.0V
SCL, SDA, RDY, RESET_N, CAP ............-0.3V to VIN +0.3V
C1P, C2P, C1N, C2N ...........................-0.3V to VIN +0.3V
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
OPERATING RATINGS
Input Voltage Range VIN...............................2.7V to 5.5V
Junction Temperature Range ....................-40°C to 125°C
Thermal Resistance θJA ................................... 30.8°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for TJ = 25°C only; limits in applying over the full Operating Junction Temperature (TJ)
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 TJ = 25°C, and are provided for reference purposes only. Unless
otherwise indicated, VIN = 3.4V, VLED = 0.8V, CIN = 47µF, CF1 = CF2 = 0.47µF, COUT1 (VOUT to CAP) = 47µF and COUT2 (CAP to
GND) = 47µF. TA= –40°C to 85°C, TJ = –40°C to 125°C.
Parameter
Min.
Typ.
Max.
Units
Conditions
Operating Input Voltage Range
2.7
5.5
V
UVLO Turn-On Threshold
2.2
2.4
2.6
V
VIN rising
UVLO Hysteresis
100
mV
VIN falling
Operating Input Current
Including In-rush Current
600
725
mA
1x, 1.5x or 2x Mode
Torch Mode Input Current
202
228
mA
1x Mode, IOUT = 200mA
Torch Mode Input Current
302
340
mA
1.5x Mode, IOUT = 200mA
Standby Input Current
30
40
µA
All LEDs are Off, TJ(max) = 85oC
Shutdown Supply Current
1
3
µA
RESET_N = 0V
Shutdown ILED Current
0
mA
STATUS1 Register [B7 B6] =00
Measure LED1 – LED3
Torch Mode Incremental current
Step
20
mA
XRP6840A, Table 6, averaged from all
channels
30
mA
XRP6840B, Table 6, averaged from all
channels
Flash Mode Incremental current
Step
200
mA
XRP6840A, Table 5, averaged from all
channels
300
mA
XRP6840B, Table 5, averaged from all
channels
Maximum Current in Torch Mode
per Channel
300
mA
XRP6840A, Note 2, averaged from all
channels
440
mA
XRP6840B, Note 2, averaged from all
channels
Maximum Current in Flash Mode
4.3
A
Flash Mode, Measured current into all LED
pins
Output Current DAC Resolution
3
Bit
Flash Mode
4
Bit
Torch Mode
DAC Current Accuracy
-10
10
%
120mA < ILED < 1.6A for XRP6840A
180mA < ILED < 1.6A for XRP6840B
-12
12
mA
ILED ≤ 120mA, XRP6840A
-18
18
mA
ILED ≤ 180mA, XRP6840B


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