MAX16823AUE+ Maxim Integrated Products, MAX16823AUE+ Datasheet - Page 7
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MAX16823AUE+
Manufacturer Part Number
MAX16823AUE+
Description
IC LED DRIVR HIGH BRIGHT 16-TQFN
Manufacturer
Maxim Integrated Products
Type
HBLED Driverr
Datasheet
1.MAX16823ATE.pdf
(12 pages)
Specifications of MAX16823AUE+
Constant Current
Yes
Topology
Linear (LDO), Open Drain, PWM
Number Of Outputs
3
Internal Driver
Yes
Type - Primary
Automotive
Type - Secondary
High Brightness LED (HBLED), RGB
Voltage - Supply
5.5 V ~ 40 V
Voltage - Output
3.41V
Mounting Type
Surface Mount
Package / Case
16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
100mA
Internal Switch(s)
Yes
Operating Supply Voltage
5.5 V to 40 V
Maximum Power Dissipation
2088.8 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency
-
Efficiency
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX16823 features pulsed or chopped-current
dimming inputs (DIM_) to chop the LED current and to
adjust the brightness. DIM_ also serves as an active-
high enable input. A logic-low at DIM_ turns off OUT_
and a logic-high turns on OUT_. If the signal at DIM
stays low more than the programmed LEDGOOD delay
time, LEDGOOD goes low (Figure 1).
High-Voltage, 3-Channel Linear High-Brightness
LEDGGOOD
DIM1
DIM2
DIM3
_______________________________________________________________________________________
Pulse-Dimming Inputs (DIM_)
GND
LGC
IN
IN
IN
LED Driver with Open LED Detection
MAX16823
DETECTOR
LEDGOOD
BANDGAP
SHUTDOWN
THERMAL
Figure 2 shows the PWM dimming operation for the
MAX16823 with an ICM7555 timer. The ICM7555 pro-
vides an adjustable duty cycle using two external resis-
tors and a capacitor. In TAIL operation, the output of
the ICM7555 feeds into DIM and lights up the LEDs.
The LED’s brightness depends on the duty cycle of the
REG
I_REG
I_REG
I_REG
UVLO
Two Brightness Levels for
IN
IN
IN
Block Diagram
TAIL/STOP Lights
OUT1
CS1
OUT2
CS2
OUT3
CS3
7