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| 型号： | MAX16831ATJ+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR HIGH BRIGHT 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载 |
| 类型 - 次要： | 高亮度 LED（HBLED），RGB |
| 频率： | 125kHz ~ 600kHz |
| 电源电压： | 5.5 V ~ 76 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（5x5） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 1425 (CN2011-ZH PDF) |
EVALUATION KIT AVAILABLE
MAX16831
High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
General Description
The MAX16831 is a current-mode, high-brightness LED
(HBLED) driver designed to control two external
n-channel MOSFETs for the single-string LED current
regulation. The MAX16831 integrates all the building
blocks necessary to implement fixed-frequency HBLED
drivers with wide-range dimming control. The
MAX16831 is configurable to operate as a step-down
(buck), step-up (boost), or step-up/-down (buck-boost)
current regulator.
Current-mode control with leading-edge blanking simpli-
fies control-loop design. Internal slope compensation
stabilizes the current loop when operating at duty cycles
above 50%. The MAX16831 operates over a wide input
voltage range and is capable of withstanding automo-
tive load-dump events. Multiple MAX16831s can be
synchronized to each other or to an external clock. The
MAX16831 includes a floating dimming driver for
brightness control with an external n-channel MOSFET
in series with the LED string.
HBLED drivers using the MAX16831 achieve efficien-
cies of over 90% in automotive applications. The
MAX16831 also includes a 1.4A source and 2.5A sink
Features
o Wide Input Range: 6V to 76V With Cold-Start
Operation to 5.5V
o Integrated Differential LED Current-Sense
Amplifier
o Floating Dimming Driver Capable of Driving an
n-Channel MOSFET
o 5% LED Current Accuracy
o 200Hz On-Board Ramp Syncs to External PWM
Dimming Signal
o Programmable Switching Frequency (125kHz to
600kHz) and Synchronization
o Output Overvoltage Load Dump, LED Short,
Overtemperature Protection
o Low 107mV LED Current Sense for High
Efficiency
o Enable/Shutdown Input with Shutdown Current
Below 45μA
Ordering Information
gate driver for driving switching MOSFETs in high-power
LED driver applications, such as front light assemblies.
The dimming control allows for wide PWM dimming at
frequencies up to 2kHz. Higher dimming ratios of up to
PART
MAX16831ATJ+
MAX16831ATJ/V+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
1000:1 are achievable at lower dimming frequencies.
The MAX16831 is available in a 32-pin thin QFN package
with exposed pad and operates over the -40 ° C to
+125 ° C automotive temperature range.
Applications
Automotive Exterior Lighting:
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
/V denotes an automotive qualified part.
Typical Operating Circuits
BUCK-BOOST CONFIGURATION
High-Beam/Low-Beam/Signal Lights
Rear Combination Lights (RCL)
V IN
R UV2
C CLMP
R CS
Daytime Running Lights (DRL)
Fog Light and Adaptive Front Light Assemblies
R UV1
UVEN
V CC
LO
CLMP
CS-
CS+
DGT
R D
Q S
Industrial and Architectural Lighting
C UVEN
DRV
SNS+
LEDs
Emergency Lighting
DIM
DIM
REG1
MAX16831
SNS-
QGND
R SENSE
Projectors with RGB LED Light Sources
Navigation and Marine Indicators
C REG1
R T
RTSYNC
HI
R OV1
C F
OV
COMP
CS
FB
AGND
SGND
REG2
DRI
R OV2
R1
C REG2
C2
R2
C1
Pin Configuration appears at end of data sheet.
Typical Operating Circuits continued at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0809; Rev 2; 1/13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16831ATJ/V+ | 功能描述:LED照明驱动器 w/Analog & PWM Dimming Control 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 |
| MAX16831ATJ/V+T | 功能描述:LED照明驱动器 w/Analog & PWM Dimming Control 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 |
| MAX16831ATJ+ | 功能描述:LED照明驱动器 w/Analog & PWM Dimming Control 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 |
| MAX16831ATJ+T | 功能描述:LED照明驱动器 w/Analog & PWM Dimming Control 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 |
| MAX16831EVKIT+ | 功能描述:LED 照明开发工具 MAX16831 Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
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