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| S-8235AAA-TCT1U Datasheet, PDF (10/24 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE BATTERY PROTECTION IC | |||
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FOR AUTOMOTIVE BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)
S-8235A Series
Rev.1.7_00
ï® Operation
1. Normal status
If the voltage of each of the batteries is lower than "overcharge detection voltage n (VCUn) + overcharge hysteresis
voltage n (VHCn)", CO pin output changes to "L". This is called normal status.
2. Overcharge status
When the voltage of one of the batteries exceeds VCUn during a charging operation at normal status, and the status is
retained for overcharge detection delay time (tCU) or longer, CO pin output changes to "H". This is called overcharge
status.
VHCn
VCUn
Battery voltage
(n = 1 to 5)
CO pin
tTR or
longer
tTR or
shorter
tCU or shorter
tCU
Figure 5 Overcharge Detection Operation
2.0 ms typ.
10
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