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MAX16823AUE/V+

P1-P3P4-P6P7-P9P10-P12
MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
10 ______________________________________________________________________________________
Preload Current
Figure 6 shows the MAX16823 with a preload circuit. In
the circuit, the BJT, R
PRELOAD
, and REG generate a
preset load current. The preset load current I
PRESET
is
determined with the following formula:
This circuit is used with older body controllers that
monitor minimum RCL current to detect failures.
I
VV
R
PRESET
REG
PRELOAD
=
− 07.
IN
DIM_
GND
R
CS_
LEDs
Q1
C
IN
V
IN
OUT_
CS_
MAX16823
REG
C2
PWM DIMMING
Figure 5. Increased LED Current (Amper Range) with a Single
BJT
R
CS1
R
CS2
R
CS3
OUT3
CS1
CS2
CS3
GND
DIM2
DIM1
STOP
TAIL
IN
IN
IN
C
IN
R
PRELOAD
C
LGC
C
REG
LGC
DIM3
REG
OUT2
OUT1
MAX16823
TAIL
TAIL
STOP
100kΩ
100kΩ
Figure 6. Preload Current Setting
MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
______________________________________________________________________________________ 11
Chip Information
PROCESS: BiCMOS-DMOS
Pin Configurations
15
16
14
13
6
5
7
DIM2
LEDGOOD
8
DIM1
CS3
REG
CS2
12
OUT3
4
12 11 9
OUT2
OUT1
LGC
IN
IN
IN
*EP
MAX16823
DIM3 GND
3
10
CS1
TQFN
+
TOP VIEW
16
15
14
13
12
11
10
1
2
3
4
5
6
7
OUT3
CS1
CS2
CS3DIM2
DIM1
OUT1
OUT2
TOP VIEW
*EP = EXPOSED PAD.
MAX16823
GND
REG
LGCIN
LEDGOOD
98ININ
DIM3
TSSOP
+
*EP
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages
. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package draw-
ings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
16 TQFN-EP T1655+3
21-0140
16 TSSOP U16E+3
21-0108
MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0 1/07 Initial release —
1 3/07 Released TQFN package. 1
2 10/08 Updated General Description, Features, EC table, and Detailed Description. 1, 2, 6
3 9/09 Added automotive packages. 1
P1-P3P4-P6P7-P9P10-P12

MAX16823AUE/V+

Mfr. #:
Buy MAX16823AUE/V+
Manufacturer:
Maxim Integrated
Description:
LED Lighting Drivers 3Ch Linear HB w/Open LED Detection
Lifecycle:
New from this manufacturer.
Delivery:
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