Battery Charge Controllers | NCP1855

バッテリ充電器、スイッチング、2.5 A、外部パワー・パス制御、USB-OTG ブースト・レギュレータ、高電圧入力機能付き

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Overview

NCP1855 は、完全にプログラム可能なシングルセル・リチウムイオン・スイッチング充電器で、USB 準拠入力電源と AC アダプタ電源からの充電用に最適化されています。同期 PWM コントローラ、パワー MOSFET、充電サイクル全体の監視 (ソフトウェアによる管理の下での安全機能を含む) を搭載しています。システムを絶縁して電力を供給するため、オプションのバッテリ FET をシステムとバッテリとの間に配置することができます。NCP1855 の接合部温度は充電サイクル中監視され、電流と電圧のいずれも I²C 設定に従って変更できます。充電器のアクティビティとステータスは、専用のピンでシステムにレポートされます。入力ピンは過電圧から保護されます。NCP1855 は、USB トランシーバに過電圧保護電源を提供するだけでなく、バッテリ電圧を上げることにより USB OTG サポートも提供します。

  • Single Cell Li-Ion Battery Charger
  • High Efficiency Charging
  • High USB Input Voltage Charging (5V, 9V, 12V standards)
  • Smart Phone
  • Handled device
  • Tablet
  • PDA
  • 2.5 A Buck Converter with Integrated Pass Devices
  • Input Current Limiting to Comply to USB Standard
  • Automatic Charge Current for AC Adaptor Charging
  • High Accuracy Voltage and Current Regulation
  • Input Overvoltage Protection up to +28 V
  • Factory Mode
  • 1000 mA Boosted Supply for USB OTG Peripherals
  • Reverse Leakage Protection Prevents Battery Discharge
  • Protected USB Transceiver Supply Switch
  • Dynamic Power Path with Optional Battery FET
  • Silicon Temperature Supervision for Optimized Charge Cycle
  • Safety Timers
  • Flag Output for Charge Status and Interrupts
  • I2C Control Bus up to 3.4 MHz

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Number of Cells Charged

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VCC Max (V)

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NCP1855FCCT1G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-25

499BN

1

260

REEL

3000

N

Li-Ion/Polymer

-

4

15.5

5

Price N/A

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