MAX16823 Maxim Integrated Products, MAX16823 Datasheet - Page 5

• Manufacturer Part Number: MAX16823
• Description: 3-Channel Linear High-Brightness LED Driver
• Manufacturer: Maxim Integrated Products

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High-Voltage, 3-Channel Linear High-Brightness
TQFN
5, 6, 7
EP
10
11
12
13
14
15
16
1
2
3
4
8
9
PIN
TSSOP
7, 8, 9
EP
10
11
12
13
14
15
16
3
4
5
6
1
2
_______________________________________________________________________________________
LEDGOOD
NAME
OUT3
OUT2
OUT1
DIM1
DIM2
DIM3
GND
LGC
REG
CS3
CS2
CS1
EP
IN
LED Driver with Open LED Detection
D i m m i ng Inp ut 1. D IM 1 i s a l ow - fr eq uency d i m m i ng i np ut for channel 1. A l og i c- l ow tur ns off
O U T1 and a l og i c- hi g h tur ns on O U T1.
D i m m i ng Inp ut 2. D IM 2 i s a l ow - fr eq uency d i m m i ng i np ut for channel 2. A l og i c- l ow tur ns off
O U T2 and a l og i c- hi g h tur ns on O U T2.
D i m m i ng Inp ut 3. D IM 3 i s a l ow - fr eq uency d i m m i ng i np ut for channel 3. A l og i c- l ow tur ns off
O U T3 and a l og i c- hi g h tur ns on O U T3.
Open LED Output. LEDGOOD is an open-drain output. A logic-high indicates the LED
connection i s g ood i n al l thr ee channel s. A l og i c- l ow i nd i cates an op en LE D connecti on. S ee the
LE D GO OD secti on.
P osi ti ve Inp ut S up p l y. Byp ass w i th a 0.1µF ( m i n) cap aci tor to G N D . C onnect al l IN
p i ns tog ether .
LE D D etecti on- Ti m i ng S etti ng . C onnect a cap aci tor fr om LGC to g r ound to set the d el ay ti m e
for LE D G OO D .
3.4V V ol tag e Reg ul ator . C onnect a 0.1µF cap aci tor fr om RE G to G N D .
G r ound
C hannel 3 S ense Am p l i fi er P osi ti ve Inp ut. C onnect the cur r ent- sense r esi stor b etw een C S 3
and G N D to p r og r am the outp ut cur r ent l evel for channel 3.
C hannel 2 S ense Am p l i fi er P osi ti ve Inp ut. C onnect the cur r ent- sense r esi stor b etw een C S 2
and G N D to p r og r am the outp ut cur r ent l evel for channel 2.
C hannel 1 S ense Am p l i fi er P osi ti ve Inp ut. C onnect the cur r ent- sense r esi stor b etw een C S 1
and G N D to p r og r am the outp ut cur r ent l evel for channel 1.
C ur r ent Reg ul ator O utp ut 3
C ur r ent Reg ul ator O utp ut 2
C ur r ent Reg ul ator O utp ut 1
E xp osed P ad . C onnect E P to a l ar g e- ar ea g r ound p l ane for effecti ve p ow er d i ssi p ati on. D o not
use as the IC g r ound connecti on.
FUNCTION
Pin Description
5