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MAX16823_09 Datasheet(Arkusz danych) 5 Page - Maxim Integrated Products

Numer części MAX16823_09
Szczegółowy opis  High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection
Pobierz  12 Pages
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Producent  MAXIM [Maxim Integrated Products]
Strona internetowa  http://www.maxim-ic.com
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High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
_______________________________________________________________________________________
5
Pin Description
PIN
TQFN
TSSOP
NAME
FUNCTION
1
3
DIM1
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.
2
4
DIM2
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.
3
5
DIM3
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.
4
6
LEDGOOD
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.
5, 6, 7
7, 8, 9
IN
Positive Input Supply. Bypass with a 0.1µF (min) capacitor to GND. Connect all IN
pins together.
810
LGC
LED Detection-Timing Setting. Connect a capacitor from LGC to ground to set the delay time
for LEDGOOD.
9
11
REG
3.4V Voltage Regulator. Connect a 0.1µF capacitor from REG to GND.
10
12
GND
Ground
11
13
CS3
Channel 3 Sense Amplifier Positive Input. Connect the current-sense resistor between CS3
and GND to program the output current level for channel 3.
12
14
CS2
Channel 2 Sense Amplifier Positive Input. Connect the current-sense resistor between CS2
and GND to program the output current level for channel 2.
13
15
CS1
Channel 1 Sense Amplifier Positive Input. Connect the current-sense resistor between CS1
and GND to program the output current level for channel 1.
14
16
OUT3
Current Regulator Output 3
15
1
OUT2
Current Regulator Output 2
16
2
OUT1
Current Regulator Output 1
——
EP
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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