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X R P 7 6 2 0
4 - C h a n n e l A d j u s t a b l e C u r r e n t I 2 C C o n t r o l l e d L E D D r i v e r
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
OPERATING RATINGS
Input Voltage Range V IN ............................... 2.7V to 5.5V
Junction Temperature Range ....................-40°C to 100°C
Thermal Resistance θ JA ...................................... 59°C/W
rating conditions for extended periods of time may affect
reliability.
V IN , SDA, SCL, LEDx .................................. -0.3V to 6.0V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................... Internally Limited (Note 1)
Lead Temperature (Soldering, 10 sec).................... 300°C
ESD Rating (Human Body Model).............................. 2kV
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of T J = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “?”. Minimum and Ma ximum 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 IN = 2.7V to 4.6V, C IN = 1μF, T A = – 40°C to 85°C, T J = – 40°C to
100°C.
Parameter
Operating Input Voltage Range
Min.
2.7
Typ.
Max.
5.5
Units
V
?
Conditions
Operating Input Current
DAC=000000
Operating Input Current
LED Current accuracy
(includes Line Regulation)
LED Current Matching
Line Regulation
-0.3
-5
-8
-3
30
450
50
600
0.3
5
8
3
1
μA
μA
mA
%
%
%
%/V
?
?
?
?
?
?
I LEDX =0, V IN =4.2V
I LED1 =I LED2 =I LED3 =I LED4 =10mA, V IN =4.2V
V LED = 0.2V to 2.7V
I LEDX ≤ 6mA
V LED = 0.2V to 2.7V
I LEDX > 6mA
For same DAC setting
V LED = 0.2V to 2.7V, Note 2
Measured as ΔI OUT /I OUT_AVG /ΔV
V LED = 0.2V to 2.7V, Note 3
Current DAC Resolution
6
Bit
Current for DAC=000000
2
μA
?
Applies to all LEDs
Current for DAC=000001
Maximum LED Current
DAC=111111
0.35
30.50
0.50
31.75
0.65
33.00
mA
mA
Applies to all LEDs
Applies to all LEDs
For changes between any DAC code
2
μs
?
000001 and higher. Current must change
within this time after the last bit of LED
data. V IN =2.7 to 5.5V
Maximum Current Change
Settling Time
Applies to changes between DAC code
000000 and higher or change from 0 to 1
60
150
μs
for STATUS bits B5-B2 (channel enable).
Current must change within this time
after the last bit of LED data. V IN =2.7 to
5.5V
I LED =20mA;
Current Source Dropout Voltage
0.1
0.15
V
?
The voltage where LED current decreases
3% from nominal value at V LED = 1V.
V IN =2.7 to 5.5V
Shutdown Supply Current
Shutdown Supply Current
0.01
1
5
μA
μA
V IN =4.2V
V IN =4.2V, T A =85°C
Thermal Shutdown Die
Temperature
125
150
175
°C
Regulator turns off
? 2012 Exar Corporation
2/11
Rev. 1.1.0
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