S-8249AAP-M6T1U Datasheet, PDF (14/22 Pages) Seiko Instruments Inc – VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION

VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION
S-8249 Series
 Timing Chart
V_CU
V_CL (V_CU − V_HC)
Battery voltage
V_BU
V_BL (V_BU − V_HB)
Rev.1.2_00
V_CB^*1
CB pin voltage
V_SS
V_DD
CO pin voltage
(Active "H")
V_SS
V_DD
CO pin voltage
(Active "L")
V_SS
Charger connection
Cell balancing detection delay time (t_BU)
t_BU
Cell balancing release delay time (t_BL)
(1)
Status^*2
(2)
(1)
Overcharge detection delay time (t_CU)
Overcharge release delay time (t_CL) tBL
(2)
(3)
(2)
(1)
*1. The CB pin is pulled up by the external resistor.
*2. (1): Normal status
(2): Cell balancing status
(3): Overcharge status
Remark The charger is assumed to charge with a constant current.
Figure 6
14