Converters | NCV8881

LDO 稳压器，1.5 A，低漏

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NCV8881 包括一个降压开关稳压器 (SMPS)，以及一个 SMPS 输出欠电压监控器和 CPU 监督电路组合。另外，提供两个固定电压低漏稳压器输出，它们共享 LDO 输出电压状态输出。启用之后，稳压器运行将继续，直到不再存在监督信号。NCV8881 适用于必须耐受 40V 负载转储的汽车、联接电池应用。该开关稳压器能够以恒定开关频率将典型的 9 V 至 19 V 的汽车输入电压范围转换为 3.3 V 至 8 V 的输出，可进行电阻编程，或与外部时钟信号进行同步。启用输入阈值和磁滞可编程，其启用输入状态在开漏点火缓冲器输出处进行复制。此类稳压器具有电流限制、输入过电压和超温关断，以及 SMPS 短路关断保护。

  • Audio
  • Infotainment
  • Safety - Vision Systems
  • Instrumentation

  • Automotive Systems

  • 1.5 A Switching Regulator (internal power switch)
  • 100 mA, 5 V LDO Output
  • 40 mA, 8.5 V LDO Output
  • Operating Range 5 V to 19 V
  • Programmable SMPS Frequency
  • SMPS can be Synchronized to an External Clock
  • Programmable SMPS Output Voltage Down to 0.8 V
  • ±2% Reference Voltage Tolerance
  • Internal SMPS Soft-Start
  • Voltage-mode SMPS Control
  • SMPS Cycle-by-Cycle Current Limit and Short-Circuit Protection
  • Internal Bootstrap Diode
  • Logic level Enable Input
  • Enable Input Hysteresis Programmable by External Resistor Divider
  • Enable Input State is Replicated at an Open Drain Output
  • CPU Watchdog with Resistor Programmable Delays
  • Watchdog Reset Output also Indicates SMPS Output Out of Regulation
  • Battery Input Withstands Load Dump to 40 V
  • Low Standby Current
  • Thermal Shutdown (TSD)
  • NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls
  • These are Pb-Free Devices

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