S-8233C_1 Datasheet, PDF (18/27 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK

BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Rev.4.1_00
3. Over current detection
V_CU
Battery ^VCD
voltage ^VDU
V_DD
V_CC
CSO
terminal
V_SS
VCC
DSO
terminal
VSS
VCC
ISO
terminal
V_SS
VCC
DO P
terminal
V_SS
CO P
terminal
V_SS
VCC
VMP
V_IOV1
terminal _{V IOV2}
V_IOV3
Charger
connected
Load
connected
Mode^*1
Delay t_IOV1
V1, V2, and V3 batteries
Hi-z
Hi-z
Delay tIOV2
Hi-z
Delay t_IOV2
Delay t_IOV3
*1. Normal mode, Over charge mode, Over discharge mode, Over current mode ^{CTL terminal}
V_SS→V_CC
Figure 8
Hi-z
Charge/discharge
inhibit
CTL terminal
V_CC→V_SS
When the S-8233C series detects over current 1 or over current 2, ISO terminal goes ‘High’.
Delay time from load shorted to ISO terminal goes ‘High’ is Tiov2( at that case delay time isn’t Tiov3).
18
Seiko Instruments Inc.