User Manual

SC
20-A_Manual_R1.0 Confidential / Released 24 / 49
Param
eter
De
scription
Condit
ions
M
in.
Ty
p.
M
ax.
Un
it
USB_
VBUS
USB dete
ction 4.35 5.0 6.3 V
VRT
C
Power supply voltage
of backup battery.
2.0 3.0 3.25 V
7.3. Ch
arging Performance Specifications
Tab
le 16: Charging Performance Specifications
Param
eter
M
in.
T
yp.
M
ax.
Un
it
T
rickle charging current 81 90 99 mA
Ch
arge voltage range (25mV steps) 4 4.2 4.775 V
Ch
arge voltage accuracy +/-2 %
Charge current range (90mA steps) 90 1440 mA
Ch
arge current accuracy +/-10 %
Char
ge termination current: when charge
current is from 90 to 450mA;
7 %
Char
ge termination current: when charge
current is from 450 to 1440mA;
7.4 %
7.4. Op
erating Temperature
The operating temperature is listed in the following table.
Table 17: Operating Temperature
Parameter Min. Typ. Max. Unit
Oper
ating temperature range
1)
-35 +25 +65 ºC
Exten
ded temperature range
2)
-40 +75 ºC
Tric
kle charging threshold voltage range
(15.62mV steps)
2.5 2.796 2.984 V
W
eak battery threshold voltage range
(18.75mV steps)
3.0 3.2 3.581 V
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