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PDF FP8103 Data sheet ( Hoja de datos )
| Número de pieza | FP8103 | |
| Descripción | 1A Linear Li-Ion Battery Charger | |
| Fabricantes | Feeling Technology | |
| Logotipo |  |
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FP8103
1A Linear Li-Ion Battery Charger in SOP8
General Description
The FP8103 is a standalone linear Li-ion battery charger with exposed pad SOP8 package. With
few external components, FP8103 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
VIN
1
TEMP
EN 8
2
PROG
7
CHRG
FP8103
3 GND
STDBY 6
4 Vcc
BAT 5
Bat+
Bat-
Li-ion
CELL
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. 0.70
1/19
1 page  
Marking Information
SOP-8L (EP)
FP8103
XXx-XXL
Halogen Free
Lot Number
Internal ID
Per - Half Month
Year
Halogen Free: Halogen free product indicator
Lot Number: Wafer lot number’s last two digits
For Example
Lot : 123456 XXx-56L
Internal ID: Internal Identification Code
Per-Half Month: Production period indicator in half month time unit
For Example : A → First Half Month of January
B → Second Half Month of January
C → First Half Month of February
D → Second Half Month of February
Year: Production year’s last digit
FP8103
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. 0.70
5/19
5 Page 
FP8103
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 FP8103 enters standby mode, where the
input supply current drops to 55uA. The FP8103 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 FP8103 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 FP8103. 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 FP8103, 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 FP8103 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 Vcc
R1 R2 // RT
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. 0.70
11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet FP8103.PDF ] | |
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