S-8261 Datasheet, PDF (22/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR SINGLE-CELL PACK

BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261 Series
Rev.1.9_00
„ Operation Timing Chart
1. Overcharge and Overdischarge Detection
Battery
voltage
VCU
VCU–VHC
VDL+VHD
VDL
VDD
DO pin
VSS
VDD
CO pin
VSS
VM pin
VDD
VIOV1
VSS
VCHA
Charger connection
Load connection
Overcharge detection delay time (tCU)
Overdischarge detection delay time (tDL)
Mode
(1)
(2)
(1)
(3)
(1)
Remark (1) Normal condition, (2) Overcharge condition, (3) Overdischarge condition, (4) Overcurrent condition
The charger is supposed to charge with constant current.
Figure 7
2. Overcurrent Detection
Battery
voltage
VCU
VCU−VHC
VDL+VHD
VDL
VDD
DO pin
CO pin
VSS
VDD
VSS
VM pin
VDD
VSHORT
VIOV2
VIOV1
VSS
Charger connection
Load connection
Overcurrent 1 detection delay time (tIOV1) Overcurrent 2 detection delay time (tIOV2)
Mode
(1)
(4)
(1)
(4)
(1)
Load short-circuiting detection delay time (tSHORT)
(4)
(1)
Remark (1) Normal condition, (2) Overcharge condition, (3) Overdischarge condition, (4) Overcurrent condition
The charger is supposed to charge with constant current.
Figure 8
22
Seiko Instruments Inc.