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MAX16835

更新时间： 2024-11-11 05:00:31
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
8页 151K
描述
High-Voltage, 350mA, Adjustable Linear High-Brightness LED Driver

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MAX16835 数据手册

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19-4028; Rev 1; 5/08  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
MAX16835  
General Description  
Features  
o +6.5V to +40V Operating Range  
o Adjustable LED Current (35mA to 350mA)  
3.5ꢀ Output Current Aꢁꢁuraꢁc  
The MAX16835 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 MAX16835 is  
adjusted by using an external current-sense resistor in  
series with the LEDs. An enable input allows wide-  
range “pulsed” dimming. Wave-shaping circuitry  
reduces EMI. The differential current-sense input  
increases noise immunity. The MAX16835 is well suited  
for applications requiring high-voltage input and is able  
to withstand automotive load-dump events up to 40V.  
An on-board pass element minimizes external compo-  
nents while providing 3.5ꢀ output current accuracy.  
Additional features include a 5V regulated output and  
short-circuit and thermal protection.  
o
o Integrated Pass Element with Low-Dropout  
Voltage (0.55V tcp)  
o Output Short-Cirꢁuit Proteꢁtion  
o +5V Regulated Output with 4mA Sourꢁe  
Capabilitc  
o Thermal Shutdown  
o Differential LED Current Sense  
o High-Voltage Enable Pin for Dimming Interfaꢁe  
o Low Shutdown Supplc Current (35µA tcp)  
o Low 200mV Current-Sense Referenꢁe Reduꢁes  
Power Losses  
The MAX16835 is available in a thermally enhanced,  
5mm x 5mm, 16-pin TQFN package and is specified  
over the automotive -40°C to +125°C temperature range.  
o Wave-Shaped Edges Reduꢁe Radiated EMI During  
PWM Dimming  
o Available in Small, Thermallc Enhanꢁed,  
Applications  
5mm x 5mm, 16-Pin TQFN Paꢁkage  
o -40°C to +125°C Operating Temperature Range  
Automotive Interior: Map, Courtesy, and Cluster  
Lighting  
Automotive Exterior: Tail Lights and CHMSL  
Warning Lights for Emergency Vehicles  
Navigation and Marine Indicators  
General Illumination  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX16835ATE+  
-40°C to +125°C  
16 TQFN-EP*  
+Denotes a lead-free package.  
*EP = Exposed pad.  
Signage, Gasoline Canopies, Beacons  
Pin Configuration  
Simplified Diagram  
TOP VIEW  
+6.5V TO +40V  
12  
11  
10  
9
IN  
OUT  
0.1μF  
+5V REG  
N.C.  
8
7
6
5
N.C. 13  
N.C. 14  
V5  
LEDs  
0.1μF  
N.C.  
N.C.  
N.C.  
MAX16835  
MAX16835  
EN  
15  
16  
CS+  
CS-  
R
SENSE  
OUT  
+
PWM DIMMING  
EN  
1
2
3
4
GND  
TQFN  
________________________________________________________________ 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.  
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