Voltage Protection | NCP347

正過電圧保護回路、低 Ron NMOS FET 内蔵/ステータス・フラグ対応

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NCP347 では、誤った入力動作状態が検出された場合にシステムを出力ピンから切断できます。 システムは、最大 +28 V までの正の過電圧保護を備えています。このデバイスは内部 NMOS を使用しているため、外部デバイスは不要であり、システム・コストとアプリケーション・ボードの PCB 面積を削減します。NCP347 は、入力電圧が過電圧閾値 (5.63 または 5.9 または 7.2 V) または低電圧閾値 2.95 V (UVLO) を超える場合に、統合された低 Ron Power NMOS (65 mΩ) により、出力を入力から即時に切断できます。パワーアップ時 (EN (BAR) ピン = 低レベル) に、Vin が低電圧閾値を超えた後、Vout は 50 ms でオンになります。NCP347 では、ネガティブ・ゴーイング・フラグ (FLAG (BAR)) 出力により、障害が発生しているとのアラートをシステムに送信します。さらに、1.0 µF 以上のキャパシタでバイパスした場合、デバイスには ESD 保護された入力 (15 kV 空気) があります。

  • Cell Phones, Camera Phones, Digital Still Cameras, Personal Digital Applicaitons, and MP3 Players

  • Overvoltage Protection up to 28 V
  • On-Chip Low RDS(on) NMOS Transistor: 80 m
  • Overvoltage Lockout (OVLO)
  • Undervoltage Lockout (UVLO)
  • Internal 50 ms Startup Delay
  • Alert FLAG(BAR) Output
  • Shutdown EN(BAR) Input
  • Compliance to IEC61000-4-2 (Level 4), 8.0 kV (Contact), and 15 kV (Air)
  • ESD Ratings: Machine Model = B, Human Body Model = 3
  • This is a Pb-Free Device

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NCP347MTAETBG

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CAD Model

Pb

A

H

P

WDFN-10

516AA

1

260

REEL

3000

N

1.2

28

0.44

5.63

2.95

250

-40

85

$0.4

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NCP347MTAFTBG

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Active

CAD Model

Pb

A

H

P

WDFN-10

516AA

1

260

REEL

3000

N

1.2

28

0.44

5.63

2.95

250

-40

85

$0.3481

More Details

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信頼性データ

Die Related Summary Data

Device: NCP347MTAETBG

Equivalent to wafer fab process: ONC25

製品技術

製品技術

等価デバイス時間

MTBF/MTTF (時間)

FITS

ONC25

1

2712519294

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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