MAX16823_15 Datasheet, PDF (5/12 Pages) Maxim Integrated Products – High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection

MAX16823
Pin Configurations
TOP VIEW
12 11 10 9
CS1 13
OUT3 14
OUT2 15
OUT1 16
MAX16823
+
*EP
1
2
3
4
TQFN
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
8 LGC
7 IN
6 IN
5 IN
TOP VIEW
OUT2 1 ⁺
OUT1 2
DIM1 3
DIM2 4
MAX16823
DIM3 5
LEDGOOD 6
IN 7
IN 8
*EP
16 OUT3
15 CS1
14 CS2
13 CS3
12 GND
11 REG
10 LGC
9 IN
*EP = EXPOSED PAD.
TSSOP
Pin Description
PIN
TQFN TSSOP
NAME
1
3
DIM1
2
4
DIM2
3
5
DIM3
4
6
LEDGOOD
5, 6, 7
8
9
10
11
12
13
14
15
16
—
7, 8, 9
10
11
12
13
14
15
16
1
2
—
IN
LGC
REG
GND
CS3
CS2
CS1
OUT3
OUT2
OUT1
EP
FUNCTION
Dimming Input 1. DIM1 is a low-frequency dimming input for channel 1. A logic-low turns off
OUT1 and a logic-high turns on OUT1.
Dimming Input 2. DIM2 is a low-frequency dimming input for channel 2. A logic-low turns off
OUT2 and a logic-high turns on OUT2.
Dimming Input 3. DIM3 is a low-frequency dimming input for channel 3. A logic-low turns off
OUT3 and a logic-high turns on OUT3.
Open LED Output. LEDGOOD is an open-drain output. A logic-high indicates the LED
connection is good in all three channels. A logic-low indicates an open LED connection. See
the LEDGOOD section.
Positive Input Supply. Bypass with a 0.1µF (min) capacitor to GND. Connect all IN
pins together.
LED Detection-Timing Setting. Connect a capacitor from LGC to ground to set the delay
time for LEDGOOD.
3.4V Voltage Regulator. Connect a 0.1µF capacitor from REG to GND.
Ground
Channel 3 Sense Amplifier Positive Input. Connect the current-sense resistor between CS3
and GND to program the output current level for channel 3.
Channel 2 Sense Amplifier Positive Input. Connect the current-sense resistor between CS2
and GND to program the output current level for channel 2.
Channel 1 Sense Amplifier Positive Input. Connect the current-sense resistor between CS1
and GND to program the output current level for channel 1.
Current Regulator Output 3
Current Regulator Output 2
Current Regulator Output 1
Exposed Pad. Connect EP to a large-area ground plane for effective power dissipation. Do
not use as the IC ground connection.
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