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PDF FP8101 Data sheet ( Hoja de datos )

Número de pieza FP8101
Descripción 500mA Linear Li-Ion Battery Charger
Fabricantes Feeling Technology 
Logotipo Feeling Technology Logotipo



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No Preview Available ! FP8101 Hoja de datos, Descripción, Manual

FP8101
500mA Linear Li-Ion Battery Charger in SOT23
General Description
The FP8101 is a standalone linear Li-ion battery charger with exposed pad SOT23 package. With
few external components, FP8101 is well suited for a wide range of portable applications. Charging
current can be programmed by an external resistor. In standby mode, supply current will be reduced to
around 55uA. Other features include UVLO, automatic recharge, charge status indicators and thermal
regulation.
Features
Standalone Linear Charger for Single Cell Li-ion Batteries
No External MOSFET, Sense Resistor, or Blocking Diode Required
Up to 0.5A Programmable Charge Current
Preset Charge Voltage with ±1% Accuracy
Automatic Recharge
2.9V Trickle Charge Voltage
C/10 Charge Termination
55uA Standby Supply Current
Charge Status Indicators for No Battery and Charge Failure Display
Soft-Start to Limit Inrush Current
Thermal Protection
Reverse Battery Leakage Protection
Applications
Portable Information Appliances
Charging Docks & Cradles
Cellular Phones & PDAs
Handheld Computers
Typical Application Circuit
VIN
VIN
4
Vcc
FP8101
BAT 3
1
CHRG
5
PROG
GND
2
SOT23-5L
BAT+
BAT-
4
Vcc
FP8101
BAT 3
1
CHRG
5
STDBY
6
PROG
GND
2
SOT23-6L
BAT+
BAT-
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. 0.63
1/14

1 page




FP8101 pdf
Marking Information
SOT23-5L / SOT23-6L
FP8101
BAXXX
Lot Number
Year
Part Number Code
Lot Number: Wafer lot number’s last two digits
For Example: XX686 86
Year: Production year’s last digit
Part Number Code: Part number identification code for this product. It should be always “BA.
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. 0.63
5/14

5 Page





FP8101 arduino
FP8101
Charge Termination
A charge cycle is terminated when the charge current falls to 1/10 the programmed value after
the final float voltage is reached. This condition is detected by using an internal, filtered comparator to
monitor the PROG pin. When the PROG pin voltage falls below 100mV for longer then TTERM (1.8ms),
charging is terminated. The charge current is shut off and the FP8101 enters standby mode, where the
input supply current drops to 55uA. The FP8101 draws no current from the battery in standby mode.
This feature reduces the charge and discharge cycles on the battery, further prolong the battery life.
Thermal Protection
An internal thermal feedback loop reduces the programmed charge current if the die temperature
rises above a preset value of approximately 145°C. This feature protects the FP8101 from excessive
temperature and allows the user to push the limits of the power handing capability of a given circuit
board without risk of damaging the FP8101. The charge current can be set according to typical
ambient temperature with the assurance that the charge will automatically reduce the current in worst
case condition.
Under Voltage Lockout (UVLO)
An internal under voltage lockout circuit monitors the input voltage and keeps the charger in
shutdown mode until VCC rises above the under voltage lockout threshold. The UVLO circuit has a
built-in hysteresis of 500mV. Furthermore, to protect against reverse current in the power MOSFET, the
UVLO circuit force FP8101 to enter shutdown mode if VCC falls to within 10mV of the battery voltage. If
the UVLO comparator is tripped, the charger will not come out of shutdown mode until VCC rises
100mV above the battery voltage.
Automatic Recharge
Once the charge cycle is terminated, the FP8101 continuously monitors the voltage on the BAT
pin using a comparator with a 1.8ms filter time (TRECHARGE). A charge cycle restarts when the battery
voltage falls below 4.1V (which corresponds to approximately 80% to 90% battery capacity).This
ensures that the battery is kept at or near a fully charged condition and eliminated the need for periodic
charge cycle initiations. CHRG output enters a strong pull-down state during recharge cycles.
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. 0.63
11/14

11 Page







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