Voltage Supervisors | NCP345

过电压保护电路（6.85 V 阈值）

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概览

NCP345 过电压保护电路 (OVP) 结合外部 P 沟道 FET 使用时会保护传感电路不会发生瞬变过电压和电源故障。该器件用于感应过电压情况，会在发生任何损坏之前快速断开负载的输入电压供应。OVP 由精确电压参考、带磁滞的比较器、控制逻辑和 MOSFET 门极驱动器组成。OVP 基于耐用的 BiCMOS 工艺而设计，旨在抵御高达 30 V 的瞬变电压。该器件针对具有外部 AC/DC 适配器或汽车配件充电器进行产品供电和/或内部电池充电的应用而优化。标称过电压阈值为 6.85 V，因此适用于单个锂离子电池应用以及 3/4 个镍铬/镍氢电池应用。

  • Cellular Phones
  • Digital Cameras
  • Portable Computers and PDAs
  • Portable CD and other Consumer Electronics
  • Over-Voltage Turn-Off Time of less than 1 msec
  • Accurate Voltage Threshold of 6.85 V (nominal)
  • Under-Voltage Lockout Protection
  • CNTRL Input Compatible with 1.8 V Logic Levels
  • Pb-Free Package is Available

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MSL Temp (°C)

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Voltages Monitored

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V(TO) Typ (V)

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Reference Price

NCP345SNT1

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Obsolete

CAD Model

Pb

A

H

P

TSOP-5 / SOT-23-5

483

1

235

REEL

3000

N

-

30

6.85

750

-

-

-

-

Price N/A

More Details

NCP345SNT1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-5 / SOT-23-5

483

1

260

REEL

3000

N

-

30

6.85

750

-

-

-

-

Price N/A

More Details

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