汽车开关稳压器,降压,2 A,2 MHz

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NCV890231 是一款固定频率、单片式、降压开关稳压器,用于必须在最高 32 V 的输入电压下运行的汽车、电池联接应用。此款稳压器适用于汽车驾驶员信息系统中经常遇到的要求低噪声、体积小巧的系统。NCV890231 能够将典型的 4.5 V 到 18 V 汽车输入电压以高于敏感的 AM 频带的恒定开关频率转换为低至 3.3 V,无需成本高昂的滤波器和 EMI 应对措施。提供两个引脚将开关与时钟或另一个 NCV890231 进行同步。NCV890231 还提供汽车电源系统中应具有的若干保护功能,如电流限值、短路保护和高温关断。另外,该开关频率即使在使用小电感器值和全陶瓷输出滤波器电容的情况下也会产生低输出电压波纹,因此形成空间高效的开关稳压器方案。

  • Audio
  • Infotainment
  • Safety - Vision Systems
  • Instrumentation
  • Automotive
  • 2 MHz Free-running Switching Frequency
  • Internal N-Channel Power Switch
  • Low VIN Operation Down to 4.5 V
  • High VIN Operation to 32 V
  • Withstands Load Dump to 45 V
  • Logic level Enable Input Can be Directly Tied to Battery
  • 1.4 A (min) Cycle-by-Cycle Peak Current Limit
  • Short-Circuit Protection enhanced by Frequency Foldback
  • ±1.75% Output Voltage Tolerance
  • Output Voltage Adjustable Down to 0.8 V
  • 1.4 ms Internal Soft-Start
  • Thermal Shutdown (TSD)
  • Auto-synchronizes with Other NCV890XX1 or to an External Clock

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NCV890231MWTXG

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DFN-10

1

260

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3000

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4.5

45

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Up to 2200

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