PS401-I/SS Microchip Technology, PS401-I/SS Datasheet - Page 30

• Manufacturer Part Number: PS401-I/SS
• Description: IC FUEL GAUGE BATTERY MGR 28SSOP
• Manufacturer: Microchip Technology

Specifications of PS401-I/SS

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PS401
TABLE 8-4:
DS40238B-page 30
SOCErrorLimit
SOCThreshold
StableCurr
TaperCRate
TaperLow
TaperTemp
Parameter
Name
CHARGE CONTROL (CONTINUED)
Loc.
OTP
OTP
OTP
OTP
OTP
EE
# Bytes
1
1
1
6
1
5
Lower
Limit
0
0
0
0
0
0
Upper
Limit
255
255
255
255
255
255
Typical
Value
120
154
50
50
10
80
SOC range for error clamp to zero,
128 = 100%. When charging a Lithium
battery using constant current, then taper
current, the error term should be set to zero
when the taper current gets too low, in order
to allow for a full charge. This parameter will
set the error term to zero when the state-of-
charge reaches a high value, such as 92%.
Second EOC trigger based on
state-of-charge, 128 = 100%. A second
end-of-charge trigger is built into the
PS401, such that if the state-of-charge
exceeds a certain value, end-of-charge will
be forced, even if the taper or pulse current
was not detected. When state-of-charge
reached SOCThreshold, then
end-of-charge will trigger.
EOC trigger current deviation level. In order
to prevent current spikes from causing a
premature taper current trigger, the average
current and the instantaneous current must
be within StableCurr of each other for the
end-of-charge to trigger on the taper
current.
Upper limit EOC taper current, based on
temperature. 256/28/Rfactor = 1C
Lower limit EOC taper current.
256/28/Rfactor = 1C
Temperature corresponding to TaperCRate
byte.
Operational Description
 2003 Microchip Technology Inc.