fs3861 Fortune Semiconductor Corporation, fs3861 Datasheet - Page 19

• Manufacturer Part Number: fs3861
• Description: Intelligent Charger Management Controller
• Manufacturer: Fortune Semiconductor Corporation

CMPNSEL[2]
compared output and would be set high on comparator’s measured input value (like current across the sense
resistor Rsns with selecting the desired measured item by setting the CMPNSEL[2:0]) match exactly with the
positive input of the selected reference value.
Fortune Semiconductor Corp.
bit7
CMPSEL : ADDRESS 0CH
Also refer to ENCMP (ADDRESS 08H) and CMPOUT (ADDRESS 09H) register bits. The bit CMPOUT is the
bit[7:5]
bit[4:0]
CMPPSEL [4:0]
CMPPSEL [4:0]
CMPPSEL [4:0]
CMPPSEL [4:0]
CMPNSEL [2:0]
TS
VBATID
VBAT
SNS
ICTEMP The chips die body temperature measurement for prevention of excessive heat while in
Select
Select
Select
Select
Select
CMPNSEL[1]
CMPNSEL[2:0] select comparator negative input.
CMPPSEL[4:0] select comparator positive input.
bit6
The voltage of external thermistor, with either PTC (positive temperature) or NTC (negative
temperature) coefficient, and is compared with VPWM for temperature measurements and
subsequent control actions.
The voltage of external Battery ID, and is compared with VPWM for determining the battery’s
types before charges.
Battery voltage and will be compared with 2.5V, 2.6V, 3.0V, 3.9V,….4.25V, 4.3V, also shown
on the voltage regulations.
The current sensing voltage and will be compared with the 50mA, 100mA, 150mA to
determine the termination current.
continuous operations.
±20mA
VPWM
00000
01000
10000
11000
85mA
2.8V
4.0V
000
TS
CMPNSEL[0]
±20mA
bit5
VBATID
110mA
00001
01001
10001
11001
4.10V
1.2V
3.0V
001
130mA
±20mA
00010
01010
10010
11010
4.15V
CMPPSEL[4]
VBAT
1.4V
3.1V
010
bit4
19/34
160mA
±20mA
00011
01011
10011
4.20V
11011
1.5V
3.2V
SNS
011
CMPPSEL[3]
bit3
ICTEMP Reserved Reserved Reserved
185mA
±20mA
00100
10100
01100
4.23V
11100
2.0V
3.3V
100
CMPPSEL[2]
265mA
00101
10101
01101
4.25V
11101
±10%
101
2.4V
3.4V
bit2
360mA
CMPPSEL[1]
00110
10110
01110
11110
±10%
2.5V
3.6V
4.3V
110
bit1
FS3861
±20mA
410mA
60mA
00111
01111
10111
±10%
11111
2.6V
3.9V
111
CMPPSEL[0]
Rev. 1.0
bit0