OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX16836EVKIT+

P1-P3P4-P6P7-P9P10-P11
General Description
The MAX16836 current regulator operates from a 6.5V
to 40V input-voltage range and delivers up to a total of
350mA to one or more strings of high-brightness LEDs
(HB LEDs). The output current of the MAX16836 is
adjusted by using an external current-sense resistor in
series with the LEDs. A dimming input allows wide-
range “pulsed” PWM operation. Wave-shaping circuitry
reduces EMI. The differential current-sense input
increases noise immunity. The MAX16836 is well suited
for applications requiring a high-voltage input and is
able to withstand automotive load-dump events up to
40V. An on-board pass element minimizes external
components while providing ±3.5% output-current
accuracy. Additional features include a 5V regulated
output and short-circuit and thermal protection.
The MAX16836 is available in a thermally enhanced,
5mm x 5mm, 16-pin TQFN package and in an 8-pin SO
package with exposed pad. The MAX16836 is specified
over the automotive -40°C to +125°C temperature range.
Applications
Automotive Interior: Map, Courtesy, and Cluster
Lighting
Automotive Exterior: Tail Lights and CHMSL
Emergency Vehicle Warning Lights
Navigation and Marine Indicators
General Lighting
Signage, Gasoline Canopies, Beacons
Features
o +6.5V to +40V Operating Range
o Adjustable LED Current (35mA to 350mA)
o ±3.5% LED Current Accuracy
o High-Voltage DIM Pin for Dimming Interface
o Integrated Pass Element with Low-Dropout
Voltage (0.55V typ)
o +5V Regulated Output with 4mA Source
Capability
o Parallel Operation for LED Current > 350mA
o Differential LED Current Sense
o Low Shutdown Supply Current (35µA typ)
o Low 200mV Current-Sense Reference Reduces
Power Losses
o Wave-Shaped Edges Reduce Radiated EMI During
PWM Dimming
o Thermal Shutdown
o Output Short-Circuit Protection
o Available in Small, Thermally Enhanced,
5mm x 5mm, 16-Pin TQFN Package and in 8-Pin
SO with Exposed Pad Package
o -40°C to +125°C Operating Temperature Range
MAX16836
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
MAX16836
IN
OUT
V5
LEDs
R
SENSE
0.1µF
+6.5V TO +40V
+5V REG
CS+
0.1µF
CS-
DIM
PWM DIMMING
GND
EN
Simplified Diagram
19-4029; Rev 2; 4/09
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.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX16836ATE+ -40°C to +125°C 16 TQFN-EP*
MAX16836ASA+ -40°C to +125°C 8 SO-EP*
3
4
2
1
10
9
11
12
56
IN
8
16 15 13
IN
C1
V
IN
N.C.
GND
V5
CS-
C2
D1
R
SENSE
CS+
MAX16836
7
N.C. N.C. N.C.N.C.
OUT EN DIMN.C.
14
OUT
V
DIM
Typical Operating Circuit
MAX16836
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
EN
= +12V, C
V5
= 0.1µF to GND, I
V5
= 0, V
CS-
= 0V, V
DIM
= +4V, connect R
SENSE
= 0.58Ω between CS+ and CS-.
T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
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.
Note 1: Package thermal resistances obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, see www.maxim-ic.com/thermal-tutorial
.
IN to GND ...............................................................-0.3V to +45V
OUT, DIM, and EN to GND..........................-0.3V to (V
IN
+ 0.3V)
CS+, CS-, V5 to GND ...............................................-0.3V to +6V
OUT Short Circuited to GND Duration
(at V
IN
= +16V) .........................................................60 minutes
Maximum Current into Any Pin (except IN and OUT) .........±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN 5mm x 5mm
(derate 33.3mW/°C above +70°C)............................2666.7mW
8-Pin SO (derate 23.3mW/°C above +70°C).............1860.5mW
Junction-to-Case Thermal Resistance (θ
JC
)(Note 1)
8-Pin SO ...........................................................................7°C/W
16-Pin TQFN.....................................................................2°C/W
Junction-to-Ambient Thermal Resistance (θ
JA
)(Note 1)
8-Pin SO .........................................................................43°C/W
16-Pin TQFN...................................................................30°C/W
Operating Junction 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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
IN
(Note 3) 6.5 40.0 V
Ground Current I
G
I
LOAD
= 350mA 1.28 3 mA
Shutdown Supply Current I
SHDN
V
EN
≤ 0.6V 35 70 µA
Guaranteed Output Current I
OUT
R
SENSE
= 0.55Ω 350 mA
Output Current Accuracy 35mA < I
OUT
< 350mA ±3.5 %
I
OUT
= 350mA (current pulsed),
12V < V
IN
< 40V
0.55 1.2
Dropout Voltage (Note 4) ∆VDO
I
OUT
= 350mA (current pulsed),
6.5V < V
IN
< 12V
0.55 1.5
V
Current rising, V
DIM
rising to 4V 7.8
Output Current Slew Rate
Current falling, V
DIM
falling to 0.6V 7.8
mA/µs
Short-Circuit Current V
IN
= 12V, V
CS+
= 0V 400 500 650 mA
LOGIC INPUT
EN Input Current I
EN
-2.5 -1.0 -0.2 µA
EN Input Voltage High V
IH
2.8 V
EN Input Voltage Low V
IL
0.6 V
Turn-On Time t
ON
V
EN
rising edge to 90% of OUT 110 350 µs
CURRENT SENSE
Regulated R
SENSE
Voltage V
SENSE
V
SENSE
= V
CS+
- V
CS-
193 200 207 mV
CS- Voltage Range -0.3 +4.1 V
Input Current (CS+) V
CS+
= 220mV 2.7 7.0 µA
Input Current (CS-) V
CS+
= 220mV -50 17.2 µA
DIM Input Current -2.5 -1.0 -0.2 µA
DIM Input Voltage High V
IH
4V
DIM Input Voltage Low V
IL
0.6 V
Turn-On Time t
ON
After V
DIM
rising to 4V (Note 5) 110 µs
Turn-Off Time t
OFF
After V
DIM
falling to 0.6V (Note 5) 70 µs
MAX16836
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
_______________________________________________________________________________________ 3
Note 2: All devices are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by
design.
Note 3: Resistors were added from OUT to CS+ to aid with the power dissipation during testing.
Note 4: Dropout is measured as follows:
Connect R
O
= 27Ω from OUT to CS+. Connect R
SENSE
= 0.58Ω from CS+ to CS-. Set V
IN
= +12V (record V
OUT
as V
OUT1
).
Reduce V
IN
until V
OUT
= 0.97 x V
OUT1
(record as V
IN2
and V
OUT2
). ∆V
DO
= V
IN2
- V
OUT2
.
Note 5: t
ON
time includes the delay and the rise time needed for I
OUT
to reach 90% of its final value. t
OFF
time is the time needed
for I
OUT
to drop below 10%. See the
Typical Operating Characteristics
. t
ON
and t
OFF
are tested with 13Ω from OUT to CS+.
Note 6: Current regulation varies with V5 load (see the
Typical Operating Characteristics
).
Note 7: Thermal shutdown does not function if the output of the 5V reference is shorted to ground.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
EN
= +12V, C
V5
= 0.1µF to GND, I
V5
= 0, V
CS-
= 0V, V
DIM
= +4V, connect R
SENSE
= 0.58Ω between CS+ and CS-.
T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
THERMAL OVERLOAD
Thermal-Shutdown Temperature +159 °C
Thermal-Shutdown Hysteresis 24 °C
+5V REGULATOR
Output Voltage Regulation V
V5
(Note 6) 4.85 5.00 5.20 V
V5 Short-Circuit Current V
V5
= 0V (Note 7) 15 mA
Typical Operating Characteristics
(V
IN
= V
EN
= +12V, T
A
= +25°C, unless otherwise noted.)
OUTPUT CURRENT
vs. TEMPERATURE
MAX16836 toc01
TEMPERATURE (
°
C)
OUTPUT CURRENT (mA)
1109565 80-10 5 20 35 50-25
50
100
150
200
250
300
350
400
450
0
-40 125
I
LOAD
= 350mA
I
LOAD
= 35mA
I
LOAD
= 200mA
I
LOAD
= 100mA
(V
CS+
- V
CS-
)
vs. OUTPUT CURRENT
MAX16836 toc02
OUTPUT CURRENT (mA)
(V
CS+
- V
CS-
) (V)
320290230 26080 110 140 170 20050
0.200
0.202
0.204
0.206
0.208
0.198
20 350
OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX16836 toc03
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
35305 10 15 20 25
50
100
150
200
250
300
350
400
0
040
P1-P3P4-P6P7-P9P10-P11

MAX16836EVKIT+

Mfr. #:
Buy MAX16836EVKIT+
Manufacturer:
Maxim Integrated
Description:
LED Lighting Development Tools MAX16836 Eval Kit
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet