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ATION
EVALU
AVAILA
19-4032; Rev 1; 7/09
KIT
B LE
High-Voltage, 100mA/200mA Adjustable Linear
High-Brightness LED Drivers with PWM Dimming
General Description
The MAX16815/MAX16828 current regulators operate
from a 6.5V to 40V input voltage range and deliver up
to 100mA (MAX16815) or 200mA (MAX16828) to high-
brightness LED (HB LED) loads. The output current is
adjusted by using an external current-sense resistor in
series with the LEDs. The MAX16815/MAX16828’s dim-
ming input allows wide-range “pulsed” PWM operation.
An on-board pass element minimizes external compo-
nents while providing ±3.5% output-current accuracy.
The MAX16815/MAX16828 are available in a thermally
enhanced, 3mm x 3mm, 6-pin TDFN package with
exposed pad and in an 8-pin SO package with
exposed pad; they are specified over the automotive
-40°C to +125°C temperature range.
Applications
Automotive Interior: Map, Courtesy,
and Cluster Lighting
Automotive Exterior: Rear Combination Lights
(RCLs)
Emergency Vehicle Warning Lights
Features
o 6.5V to 40V Operating Range
o Adjustable LED Current
MAX16815: 35mA to 100mA
MAX16828: 35mA to 200mA
o ±3.5% LED Current Accuracy
o High-Voltage DIM Input for Dimming Interface
o Integrated Pass Element with Low-Dropout
Voltage (0.4V typ)
o 5V Regulated Output with 4mA Source Capability
o Thermal Shutdown
o Output Short-Circuit Protection
o Available in Small, Thermally Enhanced,
3mm x 3mm, 6-Pin TDFN and 8-Pin SO with
Exposed Pad Packages
o -40°C to +125°C Operating Temperature Range
Ordering Information
Signage and Indicators
Ambient and Architectural Lighting
LED Bulbs
Display Backlighting
PART
MAX16815 ATT+
MAX16815ASA+
MAX16828 ATT+
MAX16828ASA+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
6 TDFN-EP*
8 SO-EP*
6 TDFN-EP*
8 SO-EP*
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
+6.5V TO +40V
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Simplified Diagram
IN
OUT
6.5V TO 40V
C1
EN
MAX16815
MAX16828
V5
CS+
+5V REG
C2
LEDs
0.1 μ F
IN
MAX16815
MAX16828
OUT
V5
CS+
+5V REG
0.1 μ F
LEDs
PWM DIMMING
R SENSE
PWM
DIMMING
R SENSE
DIM
GND
CS-
DIM
CS-
GND
________________________________________________________________ Maxim Integrated Products
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.
1
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