High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
ABSOLUTE MAXIMUM RATINGS
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
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.
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)
PARAMETER
Supply Voltage Range
Undervoltage Lockout
Ground Current
Guaranteed Output Current
LED Current-Sense Accuracy
Dropout Voltage (Note 2)
Output Current Slew Rate
Short-Circuit Current
LEDGOOD
LEDGOOD Output Logic Low
LGC Pullup Resistor
LGC Input Upper Threshold
LGC Input Lower Threshold
LGC Pulldown Current
LGC Clock Period
DIMMING INPUT (DIM1, DIM2, DIM3)
DIM_ Logic-Input Bias Current
DIM_ Input-Voltage High
DIM_ Input-Voltage Low
DIM_ Frequency
OUTPUTS (OUT1, OUT2, AND OUT3) (Note 3)
Turn-On Time
Turn-Off Time
Output Current Rise Time
Output Current Fall Time
DIM_ rising edge to 90% of OUT_ current
DIM_ falling edge to 10% of OUT_ current
10% to 90%
90% to 10%
12
8
7
6
28
18
18
15
µs
µs
µs
µs
0
I
DIM_
-0.1
2.4
+0.1
V
IN
0.6
3
µA
V
V
kHz
V
UTH
V
LTH
V
LGC
> V
UTH
C
LGC
= 15nF
0.77
V
OL
I
SINK
= 2mA
65
100
2.53
0.8
20
1.5
2.3
0.4
135
V
kΩ
V
V
mA
ms
V
OUT_
= 0V
ΔVDO
SYMBOL
V
IN
UVLO
I
G
I
OUT
5mA
≤
I
OUT_
≤
70mA
I
OUT_
= 70mA, 6.5V
≤
V
IN
≤
40V
I
OUT_
= 70mA, 5.5V
≤
V
IN
≤
6.5V
0.3
0.3
8
180
V
IN
rising
V
IN
falling
I
OUT1
= I
OUT2
= I
OUT3
= 70mA
100
5
0.7
0.8
CONDITIONS
MIN
5.5
4.4
4.0
4.9
4.6
1.5
TYP
MAX
40
5.4
5.2
3
UNITS
V
V
mA
mA
%
V
mA/µs
mA
2
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
