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| 型号： | MAX16826ATJ+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR HB PROGR 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 恒定电流： | 是 |
| 拓扑： | PWM，SEPIC，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED），RGB，白色 LED |
| 频率： | 100kHz ~ 1MHz |
| 电源电压： | 4.75 V ~ 24 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 125°C |
EVALUATION KIT AVAILABLE
MAX16826
Programmable, Four-String HB LED Driver with
Output-Voltage Optimization and Fault Detection
General Description
The MAX16826 high-brightness LED (HB LED) driver is
designed for backlighting automotive LCD displays and
other display applications such as industrial or desktop
monitors and LCD televisions. The MAX16826 integrates
a switching regulator controller, a 4-channel linear cur-
rent sink driver, an analog-to-digital converter (ADC),
and an I 2 C interface. The IC is designed to withstand
automotive load dump transients up to 40V and can
operate under cold crank conditions.
The MAX16826 contains a current-mode PWM switching
regulator controller that regulates the output voltage to
the LED array. The switching regulator section is config-
urable as a boost or SEPIC converter and its switching
frequency is programmable from 100kHz to 1MHz.
The MAX16826 includes 4 channels of programmable,
fault-protected, constant-current sink driver controllers
that are able to drive all white, RGB, or RGB plus amber
LED configurations. LED dimming control for each chan-
nel is implemented by direct PWM signals for each of the
four linear current sinks. An internal ADC measures the
drain voltage of the external driver transistors and the
Features
? External MOSFETs Allow Wide-Range LED
Current with Multiple LEDs per String
? Individual PWM Dimming Inputs per String
? Very Wide Dimming Range
? LED String Short and Open Protection
? Adjustable LED Current Rise/Fall Times Improve
EMI Control
? Microcontroller Interface Using I 2 C Allows
LED Voltage Monitoring and Optimization
Using a 7-Bit Internal ADC
LED Short and Open Detection
Dynamic Adjustment of LED String Currents
and Output Voltage
Standby Mode
? Integrated Boost/SEPIC Controller
? External Switching Frequency Synchronization
? 4.75V to 24V Operating Voltage Range and
Withstands 40V Load Dump
? Overvoltage and Overtemperature Protection
Ordering Information
output of the switching regulator. These measurements
are then made available through the I 2 C interface to an
external microcontroller (μC) to enable output voltage
optimization and fault monitoring of the LEDs.
PART
MAX16826ATJ+
MAX16826ATJ/V+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
The amplitude of the LED current in each linear current-
sink channel and the switch-mode regulator output volt-
age is programmed using the I 2 C interface. Additional
features include: cycle-by-cycle current limit, shorted
LED string protection, and overtemperature protection.
The MAX16826 is available in a thermally enhanced,
5mm x 5mm, 32-pin thin QFN package and is specified
over the automotive -40°C to +125°C temperature range.
Applications
LCD Backlighting:
Automotive Infotainment Displays
Automotive Cluster Displays
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
/V denotes an automotive qualified part.
Ordering Information continued at end of data sheet.
Simplified Diagram
V IN
Industrial and Desktop Monitors
LCD TVs
IN
DIM1
DL
CS
FB
DR4
Automotive Lighting:
DIM2
DIM3
DIMMING
INPUTS
DR1
Adaptive Front Lighting
Low- and High-Beam Assemblies
Typical Application Circuit and Pin Configuration appear at
end of data sheet.
DIM4
MAX16826
SDA I 2 C
SCL INTERFACE
GND
DL1
CS1
DL4
CS4
BOOST LED DRIVER
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-4047; Rev 5; 10/13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16826ATJ/V+ | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Rail/Tube |
| MAX16826ATJ/V+T | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Tape and Reel |
| MAX16826ATJ/VY+ | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Rail/Tube |
| MAX16826ATJ/VY+T | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Tape and Reel |
| MAX16826ATJ+ | 功能描述:LED照明驱动器 Prog 4-String HB RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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