S-8232 Datasheet, PDF (15/27 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK

Rev.5.4_00
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8232 Series
„ Timing Charts
1. Overcharge Detection
VCUaux
VCU
Battery _VCD
voltage _VDU
VDD
VSS
VCC
DO pin
voltage
VSS
VCC
CO pin
voltage
VSS
EB−
VCC
VM pin ^VIOV2
voltage VIOV1
VSS
EB−
Charger connection
Load connection
V1 battery
V1 over voltage detect
Delay
Delay
Mode ^*1
<1>
<2>
<1>
*1. <1> Normal mode
<2> Over charge mode
<3> Over discharge mode
<4> Over current mode
V2 battery
V2 over voltage detect
V1 auxiliary over
voltage detect
V2 auxiliary over
voltage detect
Delay time = 0
Delay time = 0
<2>
<1>
<2>
<1>
<2>
<1>
Remark The charger is assumed to charge with a constant current.
Figure 5
Seiko Instruments Inc.
15