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PDF FP8102gR-G1 Data sheet ( Hoja de datos )

Número de pieza FP8102gR-G1
Descripción 1A Linear Li-Ion Battery Charger
Fabricantes Feeling Technology 
Logotipo Feeling Technology Logotipo



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FP8102
1A Linear Li-Ion Battery Charger in SOP8/MSOP8
General Description
The FP8102 is a standalone linear Li-ion battery charger with exposed pad SOP8/MSOP8
package. With few external components, FP8102 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 1A 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
Applications
Portable Information Appliances
Charging Docks & Cradles
Cellular Phones & PDAs
Handheld Computers
Typical Application Circuit
CHRG
STDBY
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. 0.61
1/21

1 page




FP8102gR-G1 pdf
Marking Information
SOP-8L (EP)
FP8102
9Fa-86L
Halogen Free
Lot Number
Internal ID
Per-Half Month
Year
MSOP-8L (EP)
FP8102
Halogen Free: Halogen free product indicator
Lot Number: Wafer lot number’s last two digits
For Example: 132386TB 86
Internal ID: Internal Identification Code
Per-Half Month: Production period indicated in half month time unit
For Example: January A (Front Half Month), B (Last Half Month)
February C (Front Half Month), D (Last Half Month)
Year: Production year’s last digit
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. 0.61
5/21

5 Page





FP8102gR-G1 arduino
FP8102
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 FP8102 enters standby mode, where the
input supply current drops to 55uA. The FP8102 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 FP8102 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 FP8102. 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.
Battery Temperature Fault Monitoring
In the event of a battery over-temperature condition, the charging control will turn off the internal
pass device and report a battery temperature fault on the TEMP pin. Inside the FP8102, two internal
voltage references VTEMP-H and VTEMP-L are fixed at 80% ×VCC and 45% ×VCC respectively. As the
TEMP pin voltage rises above VTEMP-H or falls below VTEMP-L, the FP8102 stops charging and indicates
a fault condition. After the system recovers from a temperature fault, the device will resume charging
operation. For applications that do not need to monitor the battery temperature, short the TEMP pin to
the GND.
The values of R1 and R2 are set according to the battery temperature range and the value of
thermal sensitive resistor. If the battery is equipped with NTC(Negative Temperature Coefficient)
thermistor and the temperature monitor range is TL~TH(TL< TH), then RT, the thermistor resistance,
decreases as temperature increases from TL to TH, means RTL>RTH.
The TEMP pin voltage can be calculated as:
VTEMP
R2 // RT
R1R2 // RT
Vcc
Thus, this VTEMP decreases as the temperature increase from TL to TH.
To set proper R1 and R2 value for temperature protection, we set:
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. 0.61
11/21

11 Page







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