FP8202XR-G1

FP8202 2A Switch-Mode Li-Ion Battery Charger General Description The FP8202 is a highly integrated switch-mode Li-Ion Battery Charger. With few external components, FP8202 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, FP8202 can use of small external components. Other features include UVLO, automatic recharge, charge status indicators and battery temperature monitor. Features  Up to 2A Programmable Charge Current  No external MOSFET, Sense Resistor, or Blocking Diode Required  Switch-model Charger for single cell Li-Ion Batteries  Preset Charge Voltage with ±1% Accuracy  Automatic Recharge  2.9V Trickle Charge Voltage  C/10 Charge Termination  Thermal Protection  Charge Status Indicators for No Battery and Charge Failure Display Applications  Portable Information Appliances  Charging Docks & Cradles  Cellular Phones & PDAs  Handheld Computers Typical Application Circuit VIN VIN + VCC LX + VCC FP8202 LX VS EN + EN VS + VBAT FP8202 BAT+ + VBAT CHRG BAT+ + STDBY STDBY NTC CHRG GND LI-Ion RTRICK GND TEMP 2 LI-Ion SOP-8L (EP) DFN-10L (EP) This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product. Website: http://www.feeling-tech.com.tw Rev. 0.64 1/16 FP8202 Function Block Diagram STDBY Vcc CHRG + Body Switcher OC VIN VBAT - TDie + 80% - LX Compensation + - VS - 145°C VBAT X12 + - + + TEMP 45% + 2.9V - - + - Charging Control VREF + GND VREF VBAT 360KΩ - EN 4.05V + 40KΩ RTRICK Charge Status Indicators CHRG (Red) STDBY(Green) In Charging ON OFF Charge Termination OFF ON UVLO, OverT, UnderT, NoBat(with TEMP used) OFF OFF Charge Status This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product. Website: http://www.feeling-tech.com.tw Rev. 0.64 2/16 FP8202 State Diagram Shutdown Mode Vcc < VUVLO or Vcc < VBAT CHRG =Hi-Impedance STDBY=Hi-Impedance Vcc ≥ VUVLO and Vcc ≥ VBAT +0.1V VBAT ≥ 2.9V Check VBAT VBAT < 2.9V Pre-Charge Mode Charge Current=1/10．IBAT CHRG=Strong Pull-Low STDBY=Hi-Impedance Vcc < VUVLO or Vcc < VBAT VBAT ≥ 2.9V Constant-Current Charge Mode Charge Current=IBAT CHRG=Strong Pull-Low STDBY=Hi-Impedance Vcc < VUVLO or Vcc < VBAT VBAT > 4.05V Constant-Voltage Charge Mode Charge Voltage > 4.05V CHRG=Strong Pull-Low STDBY =Hi-Impedance Vcc < VUVLO or Vcc < VBAT Charge Current