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X R P 7 6 1 8
8 - C h a n n e l C o n s t a n t C u r r e n t L i n e a r L E D D r i v e r W i t h
S m a r t T a l k T M
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 CC , ISET, EN, FB, SDB, PWM ...................... -0.3V to 6.0V
CHx .......................................................... -0.3V to 30V
Junction Temperature .......................................... 150°C
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................................ Internally Limited
Lead Temperature (Soldering, 10 sec) ................... 260°C
OPERATING RATINGS
Input Voltage Range V CC .............................. 4.2V to 5.5V
PWM Dimming Frequency.......................0.1KHz to 25KHz
Current per Channel .....................................................
V CHx ≥0.5V ........................................... 10mA to 25mA
V CHx ≥1V .............................................. 10mA to 65mA
V CHx ≥1.5V ..........................................10mA to 110mA
Operating Temperature Range ................... -40°C to 85°C
Thermal Resistance θ JA (TSSOP-20) 1 .................... 35°C/W
Note 1: The device is soldered to a 60mm 2 plane of
copper (4mm ×15mm - top side solder mask) of 1oz. on a
PCB with 8×0.5mm vias.
ESD Rating (HBM - Human Body Model) .................... 6kV
ESD Rating (MM - Machine Model) ...........................200V
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of T J = 25°C only. Minimum and Maximum
limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric
norm at T J = 25°C, and are provided for reference purposes only. Unless otherwise indicated, V CC = 5V, R ISET = 8.2 k? , T A =
25°C.
Parameter
Operating Input Voltage Range V CC
Shutdown Supply Current
Quiescent Supply Current
Under Voltage Lockout threshold
Min.
4.2
3.6
Typ.
5.0
0.1
0.5
3.8
Max.
5.5
1
1
4.0
Units
V
μA
mA
V
V EN =0V
No load
Falling edge
Conditions
Under Voltage Lockout Hysteresis
200
mV
ISET Reference Voltage
Current Multiplication Ratio
1.170
370
23
1.194
400
45
1.218
430
V
I CHX /I SET
V CHX =0.5V
Maximum Output Current per Channel
LED Current Matching
65
110
-1.5
70
120
1.5
mA
%
V CHX =1.0V
V CHX =1.5V
Any 2 channels
V CHX =1.0V, I CHX =60mA
0.45
I CHX =20mA
Current Sink Saturation Voltage
Output Current Line Regulation
Output Current Load Regulation
Enable Logic LOW
Enable Logic HIGH
PWM Pin Logic LOW
PWM Pin Logic HIGH
SDB Pin Logic LOW
SDB Pin Logic HIGH
1.8
1.8
2.4
0.8
1.2
2
4
0.8
0.8
0.4
V
%/V
%
V
V
V
V
V
V
I CHX =60mA
I CHX =100mA
V CC =4.2V to 5.5V
V CHX =0.5V to 2.8V
XRP7618 is disabled
XRP7618 is active
XRP7618 is disabled
XRP7618 is active
Feedback Output Current
Thermal Shutdown Die Temperature
Thermal Shutdown Hysteresis
? 2013 Exar Corporation
5
15
160
20
2/10
μA
°C
°C
Rev. 1.2.0
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