MAX25613

Automotive Infrared LED Controller

Single channel, automotive IR LED driver simplifies design for automotive driver monitoring systems


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说明

The MAX25613 is a single-channel, high-current IR LED driver for automotive Driver Monitoring Systems (DMS). It can take an input voltage from 5V to 48V and can drive a string of LEDs with a maximum output voltage of 55V. The MAX25613 operates using a Maxim proprietary, dual-control architecture to achieve high LED drive capability while minimizing the di/dt on the battery harness.

The MAX25613 senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts from the output to the ground or battery input. The PWM input provides LED dimming ratios of up to 5000:1, and the ICTRL input provides additional analog dimming capability in the device. The MAX25613 also includes a fault flag that indicates LED short to battery, LED short to ground, LED open, and thermal shutdown. The MAX25613 has built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25613 is available in a space-saving (4mm x 4mm) 20-pin side-wettable TQFN or a-20 pin TSSOP package, and is specified to operate over the -40°C to +125°C automotive temperature range

关键特性

  • High-Current LED Driver with Reduced di/dt on the Battery Harness
    • Boost/Buck Maxim Proprietary Control Architecture Implemented in a Single Controller IC with a Single nFET and Single Inductor
  • Protection Features Increase System Reliability
    • LED Short-to-Battery, Short-to-Ground Protection
    • LED String Open Protection
    • Thermal Protection
    • Fault Diagnosis through Fault Flag
  • Automotive Ready
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified

应用

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Part NumberRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
(A)
PWM Dimming Freq.
(kHz)
Dimming RatioDimming ControlVCURR_SENSE
(mV)
POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Oper. Freq.
(kHz)
Package/Pins
maxmaxmaxminmaxmaxmax
MAX25613 NEW!Inductor Based81Series525000
Analog
PWM
2001005485282200
TQFN/20
TSSOP/20
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX25613EVKIT: Evaluation Kit for the MAX25613

质量和环境数据

申请可靠性报告: MAX25613 
无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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相关资料


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MAX25601B
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