FAN54000是Fairchild公司的一款电池充电器IC产品，FAN54000是锂离子开关充电器，本站介绍了FAN54000的封装应用图解、特点和优点、功能等，并给出了与FAN54000相关的Fairchild仙童半导体元器件型号供参考。
FAN54000 - 锂离子开关充电器 - 电池充电器IC - 电池管理 - Fairchild（仙童半导体）
TheFAN54005combinesahighlyintegratedswitch-modecharger,tominimizesingle-cellLithium-ion(Li-ion)chargingtimefromaUSBpowersource,andaboostregulatortopoweraUSBperipheralfromthebattery.
ThechargingparametersandoperatingmodesareprogrammablethroughanI2CInterfacethatoperatesupto3.4Mbps.Thechargerandboostregulatorcircuitsswitchat3MHztominimizethesizeofexternalpassivecomponents.
TheFAN54005providesbatterycharginginthreephases:conditioning,constantcurrentandconstantvoltage.
ToensureUSBcomplianceandminimizechargingtime,theinputcurrentlimitcanbechangedthroughtheI2Cinterfacebythehostprocessor.Chargeterminationisdeterminedbyaprogrammableminimumcurrentlevel.AsafetytimerwithresetcontrolprovidesasafetybackupfortheI2Chost.ChargestatusisreportedtothehostthroughtheI2Cport.
Theintegratedcircuit(IC)automaticallyrestartsthechargecyclewhenthebatteryfallsbelowaninternalthreshold.Iftheinputsourceisremoved,theICentersahigh-impedancemode,preventingleakagefromthebatterytotheinput.Chargecurrentisreducedwhenthedietemperaturereaches120°C,protectingthedeviceandPCBfromdamage.
TheFAN54005canoperateasaboostregulatoroncommandfromthesystem.Theboostregulatorincludesasoft-startthatlimitsinrushcurrentfromthebatteryandusesthesameexternalcomponentsusedforchargingthebattery.
- Fully Integrated, High-Efficiency Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
- Charge Voltage Accuracy:
- ±0.5% at 25°C
- ±1% from 0 to 125°C
- ±5% Input Current Regulation Accuracy
- ±5% Charge Current Regulation Accuracy
- 20 V Absolute Maximum Input Voltage
- 6 V Maximum Input Operating Voltage
- 1.45 A Maximum Charge Rate
- Programmable through High-Speed I2C Interface
- (3.4 Mb/s) with Fast Mode Plus Compatibility
- Input Current
- Fast-Charge / Termination Current
- Charger Voltage
- Termination Enable
- 3 MHz Synchronous Buck PWM Controller with Wide Duty Cycle Range
- Small Footprint 1 H External Inductor
- Safety Timer with Reset Control
- 1.8 V Regulated Output from VBUS for Auxiliary Circuits
- Dynamic Input Voltage Control Automatically Reduces Charging Current with Weak Input Sources
- Low Reverse Leakage to Prevent Battery Drain to VBUS
- 5 V, 500 mA Boost Mode for USB OTG for 3.0 V to 4.5 V Battery Input
- Available in a 1.96 x 1.87 mm, 20-bump, 0.4 mm Pitch WLCSP Package
| 具体产品型号 | 生产状况及ROHS标准 | 仙童官网订购价格(美元) |
| FAN54005UCX | 量产-ROHS：截至2015年3月 | 不适用 |
