MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 12V, C
REG
= 0.1µF, I
REG
= 0, C
LGC
= 15nF, V
DIM1
= V
DIM2
= V
DIM3
= 3.4V, R
CS_
= 2.85Ω from CS_ to GND, T
J
= T
A
= -40°C
to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
IN
5.5 40 V
V
IN
rising 4.4 4.9 5.4
Undervoltage Lockout UVLO
V
IN
falling 4.0 4.6 5.2
V
Ground Current I
G
I
OUT1
= I
OUT2
= I
OUT3
= 70mA 1.5 3 mA
Guaranteed Output Current I
OUT
70 mA
LED Current-Sense Accuracy 5mA ≤ I
OUT_
≤ 70mA 5 %
I
OUT_
= 70mA, 6.5V ≤ V
IN
≤ 40V 0.3 0.7
Dropout Voltage (Note 2) ∆VDO
I
OUT_
= 70mA, 5.5V ≤ V
IN
≤ 6.5V 0.3 0.8
V
Output Current Slew Rate 8 mA/µs
Short-Circuit Current V
OUT_
= 0V 180 mA
LEDGOOD
LEDGOOD Output Logic Low V
OL
I
SINK
= 2mA 0.4 V
LGC Pullup Resistor 65 100 135 kΩ
LGC Input Upper Threshold V
UTH
2.53 V
LGC Input Lower Threshold V
LTH
0.8 V
LGC Pulldown Current V
LGC
> V
UTH
20 mA
LGC Clock Period C
LGC
= 15nF 0.77 1.5 2.3 ms
DIMMING INPUT (DIM1, DIM2, DIM3)
DIM_ Logic-Input Bias Current I
DIM_
-0.1 +0.1 µA
DIM_ Input-Voltage High 2.4 V
IN
V
DIM_ Input-Voltage Low 0.6 V
DIM_ Frequency 0 3 kHz
OUTPUTS (OUT1, OUT2, AND OUT3) (Note 3)
Turn-On Time DIM_ rising edge to 90% of OUT_ current 12 28 µs
Turn-Off Time DIM_ falling edge to 10% of OUT_ current 8 18 µs
Output Current Rise Time 10% to 90% 7 18 µs
Output Current Fall Time 90% to 10% 6 15 µs
IN to GND ...............................................................-0.3V to +45V
OUT1, OUT2, OUT3, DIM1, DIM2,
DIM3 to GND ...........................................-0.3V to (V
IN
+ 0.3V)
REG, LGC, LEDGOOD to GND ................................-0.3V to +6V
CS1, CS2, CS3 to GND .........................................-0.3V to +0.5V
OUT1, OUT2, OUT3 Short Circuited
to GND Duration (V
IN
+ 16V)..........................................60min
Maximum Current into Any Pin
(except IN, OUT1, OUT2, OUT3)..................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN 5mm x 5mm
(derate 33.3mW/°C above +70°C).........................2666mW
16-Pin TSSOP (derate 26.1mW/°C above +70°C) ....2088.8mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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