Controllers | NCP81147

低電圧同期降圧コントローラ

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Overview

NCP81147 は、差動位相電流センシング、同期入力、リモート・グランド省電力動作、およびゲート・ドライバを備えた単相ソリューションで、正確に調整された電力を提供します。適応的な非オーバーラップ・ゲートドライブおよび省電力動作回路は、サーバ、ノートブック、およびデスクトップ・システムに低スイッチング損失および高効率ソリューションを提供できます。高性能動作エラー・アンプはシステムの補償を簡素化します。NCP81147 の機能には、ソフトスタート・シーケンス、正確な過電圧および過電流保護、電源レールの UVLO、サーマル・シャットダウンも含まれます。

  • Desktop and Server Systems
  • Internal High Performance Operational Amplifier
  • Supports 5.0 V to 19 V input
  • 5.0 V to 12 v operation
  • Chip enable feature through the OSC pin
  • Integrated MOSFET drivers
  • Guaranteed startup into pre-charged loads
  • Thermal shutdown protection
  • Overvoltage and over current protection
  • Internal softstart / stop
  • Oscillator frequency range of 100 kHz to 1000 kHz
  • Power Saving Mode
  • OCP accuracy, Four re-entry times before latch
  • Lossless differential inductor current sensing
  • Internal High precision current sensing amplifier
  • 20ns Adaptive FET non-overlap time of internal Gate Driver
  • Vout from 0.8V to 3.3V (5V with 12V VCC)
  • Thermally compensated current monitoring
  • Integrated Boost diode with internal Rbst=2.2
  • Load Operation
  • Sync Function
  • Remote Ground Sensing

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Reference Price

NCP81147MNTXG

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Active

CAD Model

Pb

A

H

P

QFN-16

485G-01

1

260

REEL

3000

N

Step-Down

1

-

4.5

13.2

-

$0.5733

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