MAX25014

Automotive Low Input Voltage I2C 4-Channel 150mA Backlight Driver

4-Channel 150mA I2C LED Driver with Low Operating Voltage


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说明

The MAX25014 is a 4-channel backlight driver IC with boost controller for automotive displays. The integrated current outputs can sink up to 150mA LED current each. The device accepts a wide 2.5V to 36V input volt­age range and withstands automotive load-dump events.

The internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in the 400kHz to 2.2MHz frequency range. Integrated spread spectrum helps reduce EMI. An adaptive output-voltage-control scheme minimizes power dissipation in the LED current-sink paths.

Control is included for an external nMOSFET series switch to reduce quiescent current when the backlight is off and to disconnect the boost converter in the case of a fault.

The device features I2C-controlled pulse-width-modu­lation (PWM) dimming and hybrid dimming. In either case, the minimum pulse width is 500ns. Phase-shifted dimming of the strings is incorporated for lower EMI.

The MAX25014 is available in a 24-pin TQFN or 24-pin side-wettable TQFN (SWTQFN) package and operates over the -40°C to +125°C temperature range.

MAX25014: Typical Application Circuit MAX25014: Typical Application Circuit 放大+

关键特性

  • Wide Voltage-Range Operation
    • Operates Down to 2.5V Supply After Startup
    • Survives Load Dumps Up to 40V
  • High Integration
    • Complete 4-Channel Solution Including Boost Controller
    • I2C Control for Minimum Parts Count
  • Robust and Low EMI
    • Spread-Spectrum Oscillator
    • Phase Shifting
    • 400kHz to 2.2MHz Switching-Frequency Range
    • nMOS Input Protection Switch
  • Multiple Diagnostic Features
    • LED-Current Measurement
    • Boost Output Voltage Measurement
    • LED Open/Short Detection and Protection
    • Boost Output Undervoltage and Overvoltage
  • Versatile Dimming Scheme Allows Hybrid or PWM-Only Dimming Using DIM Input or I2C
    • Dimming Ratio > 10,000:1 Using Hybrid Dimming
    • 10,000:1 Dimming Ratio at 200Hz Using PWM Dimming
  • Compact (4mm x 4mm) 24-Pin TQFN and SWTQFN Packages

应用

  • 中央信息显示屏
  • 信息娱乐系统显示屏
  • 仪表盘

请查看具体的参数规格 LED Drivers (83)


Part NumberVIN
(V)
VIN
(V)
Max. No. of LEDs# LED ChannelsRegulation Topology
(min)(max)
MAX25014 NEW!2.536154Inductor Based

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。

MAX25014EVKIT: Evaluation Kit for the MAX25014
申请可靠性报告: MAX25014 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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


MAX25014
Automotive Low Input Voltage I2C 4-Channel 150mA Backlight Driver

  • Wide Voltage-Range Operation
  • High Integration
  • Robust and Low EMI