S8235A datasheet(9/24 Pages) SII

9 / 24 page

FOR AUTOMOTIVE BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)

Rev.1.5_00

S-8235A Series

Seiko Instruments Inc.

9. RSTI pin current "H" (IRSTIH), RSTI pin current "L" (IRSTIL)

Set V9 = VDN

− 2.0 V in initial status 2. IRSTIH is defined as the maximum current which flows in the RSTI pin when the

voltage V9 is gradually increased. IRSTIL is defined as the current which flows in the RSTI pin after setting V9 = 0 V in

initial status 2.

10. CAI pin current "H" (ICAIH), CAI pin current "L" (ICAIL)

ICAIH is defined as the current which flows in the CAI pin after setting V9 = 0 V, V12 = VDN in initial status 2.

Set V12 = 2.0 V, V9 = 0 V. ICAIL is defined as the minimum current which flows in the CAI pin when the voltage V12 is

gradually increased.

11. CTL pin current "H" (ICTLH), CTL pin current "L" (ICTLL)

ICTLH is defined as the current which flows in the CTL pin after setting V13 = VDN in initial status 2.

Set V13 = 2.0 V, V9 = 0 V in initial status 2. ICTLL is defined as the minimum current which flows in the CTL pin when

the voltage V13 is gradually increased.

12. CO pin sink current (ICOL), CO pin source current (ICOH)

ICOL is defined as the current which flows in the CO pin after setting SWCO = ON, V6 = 0.5 V in initial status 2.

ICOH is defined as the current which flows in the CO pin after setting SWCO = ON, V13 = VDN, V6 = VDN

− 0.5 V in initial

status 2.

13. CAO pin sink current (ICAOL), CAO pin source current (ICAOH)

ICAOL is the current which flows in the CAO pin after setting SWCAO = ON, V7 = 0.5 V in initial status 2.

ICAOH is the current which flows in the CAO pin after setting SWCAO = ON, V9 = 0.5 V, V8 = 5 V, V7 = VDN

− 0.5 V in

initial status 2.

14. RSTO pin sink current (IRSTOL), RSTO pin source current (IRSTOH)

IRSTOL is defined as the current which flows in the RSTO pin after setting SWRSTO = ON, V10 = 0.5 V in initial status 3.

IRSTOH is defined as the current which flows in the RSTO pin after setting SWRSTO = ON, V10 = VDN

− 0.5 V in initial

status 2.

15. CLKO pin sink current (ICLKOL), CLKO pin source current (ICLKOH)

ICLKOL is defined as the current which flows in the CLKO pin after setting SWCLKO = ON, V9 = 0 V, V11 = 0.5 V in initial

status 2.

ICLKOH is defined as the current which flows in the CLKO pin after setting SWCLKO = ON, V11 = VDN

− 0.5V in initial

status 2.

16. Overcharge detection delay time (tCU)

tCU is defined as the time period until the CO pin output changes after increasing the voltage V1 up to 5.0 V in initial

status 1.

17. Overcharge timer reset delay time (tTR)

Increase the voltage V1 up to 5.0 V in initial status 1 (first rising), and decrease the voltage V1 down to 2.8 V within tCU.

After that, increase voltage V1 up to 5.0 V again (second rising), and measure the time period until the CO pin output

changes. If the time period from when the voltage V1 is decreased to the second rising is short, CO pin output

changes after tCU is elapsed from the first rising. When the time period is gradually made longer, CO pin output

changes after tCU is elapsed from the second rising. tTR is defined as the time period from when the voltage V1 is

decreased to the second rising.

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