Battery Charge Controllers | NCP1854

电池充电器，开关，2.5 A，带外部功率路径控制和 USB-OTG 升压稳压器

Obsolete

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概览

NCP1854 是一款可全编程的单锂离子电池开关电池充电器，适用于从 USB 标准输入电源和交流适配器电源进行充电。该器件集成了同步 PWM 控制器、功率 MOSFET 和整个充电周期监控，包括软件监控下的安全功能。可在系统和电池之间放置一个可选的电池 FET，以便隔离系统和为系统供电。在充电周期期间，会监控 NCP1854 结温度，并通过 I2C 设置对电流和电压进行相应修改。充电器活动和状态通过连接系统的专门引脚进行报告。输入引脚会针对过电压进行保护。

  • Single Cell Li-Ion Battery Charger
  • High Efficiency Charging

  • 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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MSL Temp (°C)

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Number of Cells Charged

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VCC Max (V)

ID Max (µA)

Reference Price

NCP1854FCCT1G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-25

499BN

1

260

REEL

3000

N

Li-Ion/Polymer

-

4

7.1

5

Price N/A

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可靠性数据

Die Related Summary Data

Device: NCP1854FCCT1G

Equivalent to wafer fab process: ONC25

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

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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