FP8207-3A,18V开关式降压型1-3节锂电充电IC  DataSheet
FP8207应用说明  Application Note
|
Feeling Part |
Vdd(V) |
IBAT(A) |
ISHD(μA) |
OSC(Hz) |
VFLAOT(V) |
OCP |
SCP |
UVLO |
TSD |
Opereting Temperature (℃) |
Package |
|
FP8207 |
4.6~18 |
3.5 |
20 |
600K |
4.2~12.6可调 |
√ |
√ |
√ |
√ |
-40～+85 |
TSSOP-14L(EP) |
一般描述：
FP8207是一款开关模式的电池充电控制器，输入电压应用范围为4.9V~16V，可对单节或是多节锂离子电池(最多三节)进行定电流或是恒压充电，其最大充电电流为3A，可用外部电阻进行设定，在充电方面细分成3种模式，包含了涓流模式、定电流模式与定电压模式，另有第三个控制回路可对来自电源转接器的输入电流进行限制，这可保证让系统持续工作的同时还能让电池以最高速率进行充电，但却不会超出电源供应器的能力。FP8207集成了多项保护机制，包含了内置输入欠压保护、芯片过温保护、电池短路保护、电池温度监控。
特色说明：
➢宽输入工作电压范围4.9V~16V
➢可调式截止电压范围4.1V~12.6V
➢可调式充电电流最高可达3A
➢精准参考电压：±1%
➢精准充电电流：±5%
➢固定工作频率500kHz
➢充电指示灯显示
➢多种保护功能：输入欠压保护、芯片过温保护、电池短路保护、电池温度监控
➢封装TSSOP-14L带散热片
应用:
手持式装置、太阳能供电型应用、锂电池充电应用、远程监控站
General Description
The FP8207 is a 4.6V~18V input voltage, 3A multi cell synchronous step-down switching charger with few external components, FP8207 is well suited for a wide range of portable applications. Charging current can be programmed by an external current sensing resistor. With 600KHz switching frequency. The FP8207 employs a 2.4V float voltage feedback reference, so any desired battery float voltage up to 12.6V can be programmed with a resistor divider.Other features include UVLO, automatic recharge, charge status indicators and battery temperature monitor.
Features
Wide Input Voltage Range: 4.6V to 18V
Up to 3A Programmable Charge Current
Resistor Programmable Battery Float Voltage Range: 4.2V to 12.6V
Preset Charge Voltage with ±1% Accuracy
Automatic Recharge
Fix 600KHz Switching Frequency
Thermal Regulation
Under/Over Voltage Protection
Charge Status Indicators for No Battery and Charge Failure Display
Available TSSOP-14L With Exposed PAD
Applications
Portable Information Appliances
Charging Docks & Cradles
Solar Powered Applications
Handheld Computers
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