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2A Switch-Mode Li-Ion Battery Charger
FP8202
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
+
VCC
LX
FP8202 VS
EN
VBAT
STDBY
CHRG
GND
2
+
+
BAT+
LI-Ion
SOP-8L (EP)
VIN
+
VCC
LX
EN
VS
FP 8202
CHRG
VBAT
STDBY
+
+
BAT+
RTRICK
GND TEMP
NTC
LI- Ion
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

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Function Block Diagram
STDBY
CHRG
FP8202
Vcc
+
OC
-
Body
Switcher
VIN
VBAT
145°C
TDie
-
+
80%
-
+
TEMP
45%
-
+
2.9V
VBAT
-
+
-
4.05V +
Compensation
-+
X12
+
Charging
Control
VREF
360KΩ
40KΩ
RTRICK
VREF
LX
VS
VBAT
GND
EN
Charge Status Indicators
Charge Status
In Charging
Charge Termination
UVLO, OverT, UnderT,
NoBat(with TEMP used)
CHRG (Red)
ON
OFF
OFF
STDBY(Green)
OFF
ON
OFF
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

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State Diagram
FP8202
Shutdown Mode
Vcc < VUVLO or
Vcc < VBAT
CHRG=Hi-Impedance
STDBY=Hi-Impedance
VBAT 2.9V
Vcc
Vcc
VUVLO and
VBAT +0.1V
Check
VBAT
VBAT < 2.9V
Pre-Charge Mode
Charge Current=1/10IBAT
CHRG=Strong Pull-Low
STDBY=Hi-Impedance
VBAT 2.9V
Vcc < VUVLO or
Vcc < VBAT
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 <1/10IBAT
VBAT < 4.05V
Standby Mode
Charge Termination
CHRG =Hi-Impedance
STDBY=Strong Pull-Low
Vcc < VUVLO or
Vcc < VBAT
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
3/16

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Pin Descriptions
SOP-8L (EP)
TOP View
LX 1
8 VCC
GND 2
7 CHRG
VS 3
6 STDBY
VBAT 4
5 EN
Bottom View
EP
FP8202
Name
LX
GND
VS
VBAT
EN
STDBY
CHRG
VCC
EP
No. I / O
Description
1 I Switch node and inductor connection pin
2 P IC Ground
3 I Charge current-sense input
4 P Battery Voltage
5 I Enable Control
6 O Charge State Indicator2
7 O Charge State Indicator1
8 P Supply Voltage
9 P Exposed PAD-Must connect to Ground
DFN-10L (EP)
LX
GND
VS
VBAT
TEMP
Top View
VCC
CHRG
STDBY
EN
RTRICK
Bottom View
EEPP
Name No. I / O
Description
LX 1 I Switch node and inductor connection pin
GND 2 P IC Ground
VS 3 I Charge current-sense input
VBAT 4 P Battery Voltage
TEMP 5 I Battery Temperature Detector
RTRICK 6 I CC Charge Current Setting & Monitor
EN 7 I Enable Control
STDBY 8 O Charge State Indicator2
CHRG 9 O Charge State Indicator1
VCC 10 P Supply Voltage
EP 11 P Exposed PAD-Must connect to Ground
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
4/16

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Marking Information
SOP-8L (EP)
FP8202
XXx-XXL
Halogen Free
Lot Number
Internal ID
Per - Half Month
Year
DFN-10L (EP)
FP8202
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
FP8202
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
5/16