S-8233B_1 Datasheet, PDF(9/26 Page) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK

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S-8233B_1 Datasheet, PDF (9/26 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK

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Rev.4.2_00

BATTERY PROTECTION IC FOR 3-SERIAl-CELL PACK

S-8233B Series

(6) Measurement 6 Measurement circuit 3

Set S1 to ON, V1, V2, and V3 to 3.5 V, and V5 to 10.5 V under normal condition. V5/I5 is the internal

resistance between VCC and VMP (RVCM).

Set S1 to ON, V1, V2, and V3 to 1.5 V, and V5 to 4.1 V under over discharge condition. (4.5-V5)/I5 is the

internal resistance between VSS and VMP (RVCM).

(7) Measurement 7 Measurement circuit 4

Set S1 to ON, S2 to OFF, V1, V2, and V3 to 3.5 V, and V5 to 0 V under normal condition. Increase V6 from

0 V gradually. The V6 voltage when I6 = 10 Î¼A is DOP'L' voltage (VD0 (L)).

Set S1 to OFF, S2 to ON, V1, V2, V3 to 3.5 V, and V5 to VIOV2+0.1 V under over current condition. Increase

V7 from 0 V gradually. The V7 voltage when I7 = 10 Î¼A is the DOP'H' voltage (VDO (H)).

(8) Measurement 8 Measurement circuit 5

Set V1, V2, V3 to 3.5 V and V5 to 0 V under normal condition. Increase V6 from 0 V gradually. The V6

voltage when I1 = 10 Î¼A is the COP'L' voltage (VC0 (L)).

(9) Measurement 9 Measurement circuit 6

Set V1, V2, V3 to 3.5 V under normal condition. Increase V1 from 3.5 V to 4.5 V immediately (within 10 Î¼s).

The time after V1 becomes 4.5 V until COP goes 'H' is the over charge detection delay time 1 (tCU1).

Set V1, V2, V3 to 3.5 V under normal condition. Decrease V1 from 3.5 V to 1.9 V immediately (within 10

Î¼s). The time after V1 becomes 1.9 V until DOP goes 'H' is the over discharge detection delay time 1 (tDD1).

(10) Measurement 10 Measurement circuit 6

Set V1, V2, V3 to 3.5 V under normal condition. Increase V2 from 3.5 V to 4.5 V immediately (within 10

Î¼s). The time after V2 becomes 4.5 V until COP goes 'H' is the over charge detection delay time 2 (tCU2).

Set V1, V2, V3 to 3.5 V under normal condition. Decrease V2 from 3.5 V to 1.9 V immediately (within 10

Î¼s). The time after V2 becomes 1.9 V until DOP goes 'H' is the over discharge detection delay time 2 (tDD2).

(11) Measurement 11 Measurement circuit 6

Set V1, V2, V3 to 3.5 V under normal condition. Increase V3 from 3.5 V to 4.5 V immediately (within 10

Î¼s). The time after V3 becomes 4.5 V until COP goes 'H' is the over charge detection delay time 3 (tCU3).

Set V1, V2, V3 to 3.5 V under normal condition. Decrease V3 from 3.5 V to 1.9 V immediately (within 10

Î¼s). The time after V3 becomes 1.9 V until DOP goes 'H' is the over discharge detection delay time 3

(tDD3).

(12) Measurement 12 Measurement circuit 7

Set V1, V2, V3 to 3.5 V and S1 to OFF under normal condition. Increase V5 from 0 V to 0.55 V

immediately (within 10 Î¼s). The time after V5 becomes 0.55 V until DOP goes 'H' is the over current

detection delay time 1 (tIOV1).

Set V1, V2, V3 to 3.5 V and S1 to OFF under normal condition. Increase V5 from 0 V to 0.75 V

immediately (within 10 Î¼s). The time after V4 becomes 0.75 V until DOP goes 'H' is the over current

detection delay time 2 (tIOV2)

Set S1 to ON to inhibit over discharge detection. Set V1, V2, V3 to 4.0 V and increase V5 from 0 V to 6.0 V

immediately (within 1 Î¼s) and decrease V1, V2, and V3 to 2.0 V at a time. The time after V5 becomes 6.0

V until DOP goes 'H' is the over current detection delay time 3 (tIOV3).

Seiko Instruments Inc.

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