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MAX16823_09 Datasheet(Arkusz danych) 1 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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General Description
The MAX16823 three-channel LED driver operates from a
5.5V to 40V input voltage range and delivers up to 100mA
per channel to one or more strings of high-brightness
LEDs (HBLEDs). Each channel’s current is programmable
using an external current-sense resistor in series with the
LEDs. Three DIM inputs allow a wide range of indepen-
dent pulsed dimming in addition to providing the on and
off control of the outputs. Wave-shaping circuitry reduces
EMI while providing fast turn-on and turn-off times.
The MAX16823 is well suited for automotive applications
requiring a high-voltage input and is able to withstand
load-dump events up to 45V. On-board pass elements
minimize external components while providing
±5% LED
current accuracy. Additional features include an active-
high, open-drain LEDGOOD output for open LED detec-
tion, a +3.4V (±5%) regulated output with 4mA output
current capability, short-circuit and thermal protections.
The MAX16823 is available in thermally enhanced 5mm x
5mm, 16-pin TQFN-EP and 16–pin TSSOP-EP packages
and is specified over the -40°C to +125°C automotive
temperature range.
Applications
Automotive Exterior: Rear Combination Lights
(RCLs), CHMSL
Automotive Interior: RGB Ambient Lighting,
Cluster Lighting, and LCD Backlighting
Emergency Vehicle Warning Lights
Navigation and Marine Indicators
Architectural and Industrial Lighting
Features
o 5.5V to 40V Operating Range
o Adjustable Constant Output Current
(5mA to 100mA and Up to 2A with External BJT)
o ±5% Output Current Accuracy
o Open LED Detection
o Three Independent High-Voltage DIM Inputs
o Three Integrated Pass Elements with Low
Dropout Voltage (0.7V max)
o Undervoltage Lockout
o Output Short-Circuit Protection
o 3.4V Voltage Regulator with 4mA Capability
o Accurate, Low 203mV Current Sense
o Overtemperature Shutdown
o -40°C to +125°C Operating Temperature Range
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
________________________________________________________________
Maxim Integrated Products
1
CS1
CS2
CS3
OUT3
CS1
CS2
CS3
GND
LEDGOOD
DIM2
DIM1
VIN
CIN
IN
IN
IN
RLEDGOOD
CLGC
REG
CREG
LGC
DIM3
REG
OUT2
OUT1
MAX16823
Ordering Information
Typical Operating Circuit
19-0733; Rev 3; 9/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations appear at end of data sheet.
EVALUATION
KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
MAX16823ATE+
-40°C to +125°C
16 TQFN-EP*
MAX16823ATE/V+
-40°C to +125°C
16 TQFN-EP*
MAX16823AUE+
-40°C to +125°C
16 TSSOP-EP*
MAX16823AUE/V+
-40°C to +125°C
16 TSSOP-EP*
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
/V Denotes an automotive qualified part.




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