Voltage Protection | NCP346

過電圧保護回路

Obsolete

Datasheet

製品

Overview

過電圧保護回路（OVP）NCP346は、外部PチャネルFETとの併用時に、センシティブな電子回路を過電圧過渡や電源障害から保護します。過電圧を感知すると、負荷から入力電源電圧への接続を迅速に切断して、損傷が発生しないよう設計されています。OVPを構成するのは、高精度の電圧リファレンス、ヒステリシスを持つコンパレータ、制御ロジック、MOSFETゲート・ドライバです。OVPは頑強なBiCMOSプロセスにのっとって設計され、最大30 Vの電圧過渡に対応することを意図しています。 製品への電源投入および/または内部バッテリの再充電をするための外部AC/DCアダプタやカー用品充電器があるアプリケーション向けに最適化されています。オプションの公称過電圧閾値は4.45または5.5 Vですが、VCC/IN/GNDピンの間の抵抗器ディバイダで上方向に調整できます。シングルセル・リチウムイオン・アプリケーションと、3/4セルNiCD/NiMHアプリケーションに適しています。

  • Cellular Phones
  • Digital Cameras
  • Portable Computers and PDA's

  • Overvoltage Turn−Off Time of Less Than 1.0 µsec
  • Accurate Voltage Threshold of 4.45 V and 5.5 V (Nominal)
  • CNTRL Input Compatible with 1.8 V Logic Levels
  • Portable Audio and other Consumer Electronics
  • These are Pb-Free Devices

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MSL Temp (°C)

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ON Target

VCC Min (V)

VCC Max (V)

P(AV) Max (W)

VIT+ Typ (V)

VIT Typ (V)

IDDH Max (µA)

TA Min (°C)

TA Max (°C)

Reference Price

NCP346SN1T1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-5 / SOT-23-5

483

1

260

REEL

3000

N

2.5

30

-

4.45

-

1200

-40

85

Price N/A

More Details

NCP346SN2T1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-5 / SOT-23-5

483

1

260

REEL

3000

N

2.5

30

-

5.5

-

1200

-40

85

Price N/A

More Details

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