MAX16823_08 [MAXIM]
High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection; 高压， 3通道，线性高亮度LED驱动器，具有LED开路检测
| 型号： | MAX16823_08 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection |
| 文件： | 总12页 (文件大小：191K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0733; Rev 2; 10/08
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
General Description
Features
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.
o 5.5V to 40V Operating Range
o Adjustable Constant Output Current
(5mA to 100mA and Up to 2A with External BJT)
o
5ꢀ Output Current Aꢁꢁuraꢁc
o Open LED Deteꢁtion
o Three Independent High-Voltage DIM Inputs
o Three Integrated Pass Elements with Low
Dropout Voltage (0.7V max)
o Undervoltage Loꢁkout
o Output Short-Cirꢁuit Proteꢁtion
o 3.4V Voltage Regulator with 4mA Capabilitc
o Aꢁꢁurate, Low 203mV Current Sense
o Overtemperature Shutdown
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.
o -40°C to +125°C Operating Temperature Range
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.
Ordering Information
PART
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
16 TQFN-EP*
16 TSSOP-EP*
MAX16823ATE+
MAX16823AUE+
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
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
V
IN
IN
IN
IN
OUT1
OUT2
C
IN
MAX16823
OUT3
DIM1
DIM2
DIM3
REG
R
LEDGOOD
CS1
LEDGOOD
LGC
CS2
CS3
REG
GND
C
LGC
C
REG
CS1
CS2
CS3
________________________________________________________________ Maxim Integrated Produꢁts
1
For priꢁing, deliverc, and ordering information, please ꢁontaꢁt Maxim Direꢁt at 1-888-629-4642,
or visit Maxim’s website at www.maxim-iꢁ.ꢁom.
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
ABSOLUTE MAXIMUM RATINGS
IN to GND...............................................................-0.3V to +45V
OUT1, OUT2, OUT3, DIM1, DIM2,
Continuous Power Dissipation (T = +70°C)
A
16-Pin TQFN 5mm x 5mm
DIM3 to GND ...........................................-0.3V to (V + 0.3V)
(derate 33.3mW/°C above +70°C).........................2666mW
16-Pin TSSOP (derate 26.1mW/°C above +70°C) ....2088.8mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
IN
REG, LGC, LEDGOOD to GND................................-0.3V to +6V
CS1, CS2, CS3 to GND .........................................-0.3V to +0.5V
OUT1, OUT2, OUT3 Short Circuited
to GND Duration (V + 16V)..........................................60min
IN
Maximum Current into Any Pin
(except IN, OUT1, OUT2, OUT3).................................. 20mA
MAX16823
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V = 12V, C
= 0.1µF, I
= 0, C
= 15nF, V
= V
A
= V
= 3.4V, R
= 2.85Ω from CS_ to GND, T = T = -40°C
IN
REG
REG
LGC
DIM1
DIM2
DIM3
CS_
J
A
to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
5.5
4.4
4.0
TYP
MAX
40
UNITS
Supply Voltage Range
V
V
IN
V
V
rising
falling
4.9
4.6
1.5
5.4
5.2
3
IN
Undervoltage Lockout
UVLO
V
IN
Ground Current
I
I
= I
OUT2
= I = 70mA
OUT3
mA
mA
%
G
OUT1
Guaranteed Output Current
LED Current-Sense Accuracy
I
100
OUT
5mA ≤ I
≤ 70mA
5
OUT_
I
= 70mA, 6.5V ≤ V ≤ 40V
0.3
0.3
8
0.7
0.8
OUT_
OUT_
IN
Dropout Voltage (Note 2)
∆VDO
V
I
= 70mA, 5.5V ≤ V ≤ 6.5V
IN
Output Current Slew Rate
Short-Circuit Current
mA/µs
mA
V
= 0V
180
OUT_
LEDGOOD
LEDGOOD Output Logic Low
LGC Pullup Resistor
V
I
= 2mA
0.4
V
kΩ
V
OL
SINK
65
100
2.53
0.8
20
135
LGC Input Upper Threshold
LGC Input Lower Threshold
LGC Pulldown Current
LGC Clock Period
V
UTH
V
V
LTH
V
> V
mA
ms
LGC
UTH
C
= 15nF
0.77
1.5
2.3
LGC
DIMMING INPUT (DIM1, DIM2, DIM3)
DIM_ Logic-Input Bias Current
DIM_ Input-Voltage High
DIM_ Input-Voltage Low
DIM_ Frequency
I
-0.1
2.4
+0.1
µA
V
DIM_
V
IN
0.6
3
V
0
kHz
OUTPUTS (OUT1, OUT2, AND OUT3) (Note 3)
Turn-On Time
DIM_ rising edge to 90% of OUT_ current
DIM_ falling edge to 10% of OUT_ current
10% to 90%
12
8
28
18
18
15
µs
µs
µs
µs
Turn-Off Time
Output Current Rise Time
Output Current Fall Time
7
90% to 10%
6
2
_______________________________________________________________________________________
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
ELECTRICAL CHARACTERISTICS (ꢁontinued)
(V = 12V, C
= 0.1µF, I
= 0, C
= 15nF, V
= V
= V
= 3.4V, R
= 2.85Ω from CS_ to GND, T = T = -40°C
IN
REG
REG
LGC
DIM1
DIM2
DIM3
CS_
J
A
to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
PARAMETER
CURRENT SENSE
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated CS_ Voltage
V
5mA ≤ I
_ ≤ 70mA
193
203
213
mV
µA
CS_
OUT
Input Current (CS1, CS2, CS3)
Current out of CS_
+1.2
OVERTEMPERATURE PROTECTION (Note 4)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
155
23
°C
°C
3.4V REGULATOR (REG)
3.275
3.221
3.41
3.38
13
3.547
3.547
Output Voltage
V
V
REG
0 ≤ I
≤ 4mA
REG
REG Short-Circuit Current
V
= 0V
mA
REG
Note 1: All devices 100% production tested at T = +25°C. Limits over the operating temperature range are guaranteed by design.
J
Note 2: Dropout is measured as follows: Connect a resistor from OUT_ to CS_. Connect R
= 2.85Ω from CS_ to GND.
CS_
OUTA
Set V = V
+ 3V (record V
as V
). Reduce V until V
= 0.97 x V
(record as V
and V
).
OUTB
IN
OUT
OUT
OUTA
IN
OUT
INB
VDO = V
- V
.
INB
OUTB
Note 3: Output current rise and fall times are measured with a 62Ω series resistor from OUT_ to CS_.
Note 4: Overtemperature protection does not function if the output of the 3.4V reference (REG) is shorted to ground.
Typical Operating Characteristics
(V = 12V, C
= 0.1µF, I
= 0, V
= unconnected, connect R
= 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through
IN
REG
REG
LGC
CS_
a resistor, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.)
J
A
V
CS_
vs. OUTPUT CURRENT
OUTPUT CURRENT vs. INPUT VOLTAGE
OUTPUT CURRENT vs. TEMPERATURE
0.210
0.209
0.208
0.207
0.206
0.205
0.204
0.203
0.202
0.201
0.200
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
I
= 70mA
I
= 70mA
OUT
LOAD
I
I
= 35mA
= 5mA
LOAD
LOAD
I
= 5mA
OUT
0
10
20
30
40
50
60
70
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
-40 -25 -10
5
20 35 50 65 80 95 110 125
OUTPUT CURRENT (mA)
TEMPERATURE (°C )
_______________________________________________________________________________________
3
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Typical Operating Characteristics (continued)
(V = 12V, C
= 0.1µF, I
= 0, V
= unconnected, connect R
= 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through
IN
REG
REG
LGC
CS_
a resistor, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.)
J
A
V
vs. TEMPERATURE
DROPOUT VOLTAGE vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
REG
3.5
3.4
3.3
3.2
3.1
3.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
I = 0
LOAD
V
= V
= V = 0V
DIM3
DIM1
DIM2
V
= 40V
IN
MAX16823
V
= 20V
IN
I
= 1mA
LOAD
I
= 4mA
LOAD
I
= 70mA
LOAD
V
= 12V
IN
5
V = 5.5V
IN
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
-40 -25 -10
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
330Hz DIMMED OPERATION
V
CS_
vs. I
V vs. V
REG IN
REG
MAX16823 toc09
0.210
0.209
0.208
0.207
0.206
0.205
0.204
0.203
0.202
0.201
0.200
0.199
0.198
0.197
0.196
0.195
3.45
3.44
3.43
3.42
3.41
3.40
3.39
3.38
3.37
3.36
3.35
I
V
= 70mA
= 12V, DIM
LOAD
IN
PULSED AT 33Hz
(1% DUTY CYCLE)
V
DIM
2V/div
I
= 0
REG
0V
I
LED
I
= 70mA
LOAD
50mA/div
0A
I
= 1mA
REG
I
= 4mA
REG
20µs/div
0
1
2
3
4
5
6
7
8
9
10
0
5
10 15 20 25 30 35 40
(V)
I
(mA)
V
IN
REG
200Hz DIMMED OPERATION (EXPANDED)
200Hz DIMMED OPERATION (EXPANDED)
LEDGOOD RESPONSE TIMES
MAX16823 toc12
MAX16823 toc11
MAX16823 toc10
V
C
= 12V
IN
I
V
= 70mA
= 12V, DIM
LOAD
= 15nF
V
DIM
5V/div
0V
LGC
IN
PULSED AT 200Hz
(50% DUTY CYCLE)
V
DIM
V
DIM
2V/div
2V/div
V
LEDGOOD
5V/div
0V
0V
0V
I
I
LOAD
LOAD
V
LGC
50mA/div
0A
50mA/div
0A
5V/div
0V
I
V
= 70mA
= 12V, DIM
LOAD
IN
PULSED AT 200Hz
(50% DUTY CYCLE)
10µs/div
2ms/div
10µs/div
4
_______________________________________________________________________________________
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
Pin Description
PIN
NAME
DIM1
DIM2
DIM3
FUNCTION
TQFN
TSSOP
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.
1
3
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.
2
3
4
5
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.
Open LED Output. LEDGOOD is an open-drain output. A logic-high indicates the LED
4
6
LEDGOOD connection is good in all three channels. A logic-low indicates an open LED connection. See the
LEDGOOD section.
Positive Input Supply. Bypass with a 0.1µF (min) capacitor to GND. Connect all IN
pins together.
5, 6, 7
8
7, 8, 9
10
IN
LED Detection-Timing Setting. Connect a capacitor from LGC to ground to set the delay time
for LEDGOOD.
LGC
9
11
12
REG
GND
3.4V Voltage Regulator. Connect a 0.1µF capacitor from REG to GND.
Ground
10
Channel 3 Sense Amplifier Positive Input. Connect the current-sense resistor between CS3
and GND to program the output current level for channel 3.
11
12
13
13
14
15
CS3
CS2
CS1
Channel 2 Sense Amplifier Positive Input. Connect the current-sense resistor between CS2
and GND to program the output current level for channel 2.
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
15
16
16
1
OUT3
OUT2
OUT1
Current Regulator Output 3
Current Regulator Output 2
Current Regulator Output 1
2
Exposed Pad. Connect EP to a large-area ground plane for effective power dissipation. Do not
use as the IC ground connection.
EP
EP
EP
_______________________________________________________________________________________
5
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Detailed Description
Applications Information
The MAX16823 three-channel current regulator operates
from a 5.5V to 40V input voltage range and delivers up
to 100mA per channel to one or more strings of
HBLEDs. The output currents are programmable using
external current-sense resistors in series with the LEDs.
Three DIM inputs allow a wide range of independent
pulsed dimming in addition to providing the on and off
control of the outputs. The MAX16823 offers an LED-
GOOD output that indicates an open-circuit condition
when one or more LED channels are open.
Programming the LED Current
The MAX16823 uses sense resistors to set the output
current for each channel. To set the LED current for a
particular channel, connect a sense resistor across the
corresponding current-sense input (CS_) and GND. For
optimal accuracy, connect the low-side of the current-
sense resistors to the IC’s ground pin with short traces.
The value needed for the sense resistor for a given cur-
rent can be calculated with the equation below:
MAX16823
V
(V)
(A)
Integrated pass elements minimize external compo-
nents while providing 5% output current accuracy.
Additional features include a 3.4V ( 5%) voltage regula-
tor with 4mA output current capability, short-circuit and
thermal protection.
CS_
R
(Ω)=
CS_
I
OUT_
where V
is 203mV and I
is the desired LED
OUT_
CS_
current (I
).
LED
The MAX16823 uses a feedback loop to linearly control
the current from each output. The voltage across each
sense resistor is compared to a fixed reference voltage
and the error is amplified to drive the internal power
pass device for a particular channel. See the Block
Diagram. The regulation point is factory-set at 203mV.
The regulated current is adjusted by the value of
Input-Voltage Considerations
For proper operation, the minimum input voltage must
always be:
V
≥ V
+ V
+ V
IN(MIN)
CS_(MAX)
FT(MAX) DO(MAX)
where V
is the total forward voltage of all series-
connected LEDs. The minimum operating voltage of
the device is 5.5V.
FT(MAX)
R
.
CS__
The MAX16823 is a constant-current LED driver inter-
nally optimized for driving the impedance range
expected from one or more HBLEDs.
LEDGOOD
The MAX16823 features an active-low, open-drain
LEDGOOD output that goes low either when one or
more LED channels are open or when a signal at any of
the dimming inputs remains low for a period greater
3.4V Regulator (REG)
The MAX16823 includes a fixed 3.4V voltage regulator
that delivers up to 4mA of load current for auxiliary
applications throughout the 5.5V to 40V input voltage
range. Connect a 0.1µF compensation capacitor from
REG to ground. Shorting REG to ground disables the
thermal shutdown.
than the programmed LEDGOOD delay time t
.
DELAY
Program t
with a capacitor connected between
DELAY
LGC and ground. The LEDGOOD output goes low after
the programmed delay period t has elapsed. Use
DELAY
the following formula to set the delay period:
Thermal Protection
The MAX16823 enters a thermal-shutdown mode in the
event of overheating. This typically occurs in overload or
output short-circuit conditions. When the junction temper-
t
= 257,900(Ω)×C (F)
DELAY
LGC
where C
is the capacitor connected between LGC
and ground. The LEDGOOD output goes low during
the thermal shutdown.
LGC
ature exceeds T = +155°C, the internal thermal protec-
J
tion circuitry turns off the series pass elements. The
MAX16823 recovers from thermal-shutdown mode once
the junction temperature drops by 23°C. The part will
therefore protect itself by low-frequency thermal cycling
in the event of a short-circuit or overload condition.
6
_______________________________________________________________________________________
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
Block Diagram
REG
UVLO
IN
IN
I_REG
IN
OUT1
BANDGAP
IN
CS1
GND
DIM1
IN
THERMAL
SHUTDOWN
I_REG
MAX16823
OUT2
CS2
DIM2
IN
I_REG
OUT3
CS3
DIM3
LEDGGOOD
LEDGOOD
DETECTOR
LGC
Pulse-Dimming Inputs (DIM_)
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).
Two Brightness Levels for
TAIL/STOP Lights
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
_______________________________________________________________________________________
7
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
ICM7555. When V
STOP
the LEDs light up to full brightness. See the ICM7555
data sheet for formulas to calculate the dimming fre-
quency and the duty cycle.
is present, DIM is pulled up to
Other Applications
The application circuit in Figure 4 implements a two-
level brightness current for TAIL/STOP lights. In TAIL
STOP
V
. The PWM dimming operation is disabled and
operation, Q1 is off and R
sets the output current. In
CS1
STOP operation, Q1 turns on and the output current is
set by a parallel combination of R and R2.
CS1
Outputs Latch-Off
Figure 5 shows an application circuit with the
MAX16823 using a single BJT to provide high output
current. For proper operation:
Figure 3 shows a circuit with DIM1, DIM2, DIM3, and
LEDGOOD connected through a resistor to V
circuit is useful for applications that require all outputs
to latch off when one of the LEDs opens. The
MAX16823 resumes current regulation again through
power cycling, once the fault condition is removed.
. This
REG
MAX16823
V
> V
+ V
+ V
+ V
IN(MIN)
BE(MAX)
FT(MAX)
CS_ DO(MAX)
For minimized dropout, the LEDs can be placed in the
collector.
tON
DIM
tOFF
LEDGOOD GOES
LOW WHEN t > t
OFF DELAY
LEDGOOD
Figure 1. LEDGOOD Timing Delay
STOP
TAIL
D1
OUT3
OUT2
IN
D4
C1
OUT1
R1
REG
0.1µF
LEDs
R2
MAX16823
DIM1
DIM2
D2
CS1
CS2
DIS
IN
R
CS1
OUT
R3
C2
D3
100kΩ
GND
TH
DIM3
R
CS2
TRG
CS3
ICM7555
GND
R
CS3
Figure 2. PWM Dimming Operation with ICM7555
_______________________________________________________________________________________
8
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
V
IN
OUT3
OUT2
IN
C
IN
V
REG
OUT1
R1
LEDs
MAX16823
LEDs
DIM1
CS1
CS2
LEDs
DIM2
R
CS1
DIM3
LEDGOOD
R
CS2
REG
CS3
GND
C
REG
R
CS3
Figure 3. Output_ Latch-Off
STOP
D1
OUT3
D2
TAIL
OUT2
OUT1
IN
TAIL
STOP/TAIL
LEDs
TAIL
MAX16823
DIM1
DIM2
DIM3
CS1
LEDs
LEDs
R2
R3
C
IN
R
CS1
Q1
R1*
CS2
CS3
REG
C
R
REG
CS2
GND
R
CS3
*R1 = 100kΩ
Figure 4. Two-Brightness Level with Current Level Switch for TAIL/STOP Lights
_______________________________________________________________________________________
9
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Preload Current
Figure 6 shows the MAX16823 with a preload circuit. In
V
IN
the circuit, the BJT, R
, and REG generate a
PRELOAD
preset load current. The preset load current I
determined with the following formula:
is
Q1
PRESET
OUT_
REG
IN
C
IN
V
R
− 0.7V
REG
I
=
PRESET
PRELOAD
C2
LEDs
MAX16823
This circuit is used with older body controllers that
monitor minimum RCL current to detect failures.
MAX16823
PWM DIMMING
DIM_
CS_
R
CS_
GND
Figure 5. Increased LED Current (Amper Range) with a Single
BJT
STOP
TAIL
TAIL
IN
IN
IN
OUT1
TAIL
OUT2
C
STOP
IN
OUT3
DIM1
DIM2
MAX16823
100kΩ
DIM3
CS1
100kΩ
LGC
REG
CS2
CS3
C
C
REG
LGC
GND
R
PRELOAD
R
R
R
CS3
CS1
CS2
Figure 6. Preload Current Setting
10 ______________________________________________________________________________________
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
MAX16823
Pin Configurations
TOP VIEW
TOP VIEW
12
11
10
9
+
OUT2
OUT1
DIM1
DIM2
DIM3
LEDGOOD
IN
1
2
3
4
5
6
7
8
16 OUT3
15 CS1
14 CS2
13 CS3
12 GND
11 REG
10 LGC
LGC
8
7
6
5
CS1 13
OUT3 14
OUT2 15
MAX16823
IN
IN
IN
MAX16823
*EP
16
OUT1
+
*EP
IN
9 IN
1
2
3
4
TSSOP
*EP = EXPOSED PAD.
TQFN
Chip Information
Package Information
For the latest package outline information and land patterns, go
PROCESS: BiCMOS-DMOS
to www.maxim-iꢁ.ꢁom/paꢁkages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
16 TQFN
T1655-3
U16E-3
21-0140
21-0108
16 TSSOP
______________________________________________________________________________________ 11
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
1
2
1/07
3/07
Initial release
—
1
Released TQFN package.
10/08
Updated General Description, Features, EC table, and Detailed Description.
1, 2, 6
MAX16823
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
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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