s-8233bcft-tb-g Seiko Instruments Inc., s-8233bcft-tb-g Datasheet - Page 8

• Manufacturer Part Number: s-8233bcft-tb-g
• Description: Battery Protection Ic For 3-serial-cell Pack
• Manufacturer: Seiko Instruments Inc.

8
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233B Series
Test Circuits
(1) Test condition 1 Test circuit 1
(2) Test condition 2 Test circuit 1
(3) Test condition 3 Test circuit 1
(4) Test condition 4 Test circuit 2
(5) Test condition 5 Test circuit 3
Caution At the Test circuit from (1) to (15).
Set V1, V2, and V3 to 3.5 V under normal condition. Increase V1 from 3.5 V gradually. The V1 voltage
when COP = 'H' is over charge detection voltage 1 (V
COP = 'L' is over charge release voltage 1 (V
is over discharge voltage 1 (V
discharge release voltage 1 (V
Remark: The voltage change rate is 150 V/s or less.
Set V1, V2, and V3 to 3.5 V under normal condition. Increase V2 from 3.5 V gradually. The V2 voltage
when COP = 'H' is over charge detection voltage 2 (V
COP = 'L' is over charge release voltage 2 (V
is over discharge voltage 2 (V
discharge release voltage 2 (V
Remark: The voltage change rate is 150 V/s or less.
Set V1, V2, and V3 to 3.5 V under normal condition. Increase V3 from 3.5 V gradually. The V3 voltage
when COP = 'H' is over charge detection voltage 3 (V
COP = 'L' is over charge release voltage 3 (V
is over discharge voltage 3 (V
discharge release voltage 3 (V
Remark: The voltage change rate is 150 V/s or less.
Set V1, V2, V3 to 3.5 V and V5 to 0 V under normal condition. Increase V5 from 0 V gradually. The V5
voltage when DOP = 'H' and COP = 'H', is over current detection voltage 1 (V
Set V1, V2, and V3 to 3.5 V and V5 to 0 V under normal condition. Fix the COVT terminal at V
increase V5 from 0 V gradually. The V5 voltage when DOP = 'H' and COP = 'H' is over current detection
voltage 2 (V
Set V1, V2, and V3 to 3.5 V and V5 to 0 V under normal condition. Fix the COVT terminal at V
increase V5 gradually from 0 V at 400 µs to 2 ms. The V5 voltage when DOP = 'H' and COP = 'H' is over
current detection voltage 3 (V
Set S1 to ON, V1, V2, and V3 to 3.5 V, and V5 to 0 V under normal condition and measure current
consumption. I1 is the normal condition current consumption (I
(I
Set S1 to ON, V1, V2, and V3 to 1.5 V, and V5 to 4.5 V under over discharge condition. Current
consumption I1 is power-down current consumption (I
CELL2
), and I3, the cell 3 current consumption (I
If the device’s CTL logic is “normal” (S-8233BA, S-8233BC, S-8233BE) then set the CTL
voltage at V
If the device’s CTL logic is “reverse” (S-8233BB, S-8233BD) then set the CTL voltage at V
(V4=V1+V2+V3).
IOV2
).
SS
(V4=0V).
IOV3
DU1
DU2
DU3
DD1
DD2
DD3
).
).
).
).
). Increase V1 gradually. The V1 voltage when DOP = 'L' is over
). Increase V2 gradually. The V2 voltage when DOP = 'L' is over
). Increase V3 gradually. The V3 voltage when DOP = 'L' is over
Seiko Instruments Inc.
CD1
CD2
CD3
CELL3
). Further decrease V1. The V1 voltage when DOP = 'H'
). Further decrease V2. The V2 voltage when DOP = 'H'
). Further decrease V3. The V3 voltage when DOP = 'H'
).
PDN
CU1
CU2
CU3
). Decrease V1 gradually. The V1 voltage when
). Decrease V2 gradually. The V2 voltage when
). Decrease V3 gradually. The V3 voltage when
).
OPE
), I2, the cell 2 current consumption
IOV1
).
Rev.4.3
_00
SS
SS
CC
,
,