s-8215a Seiko Instruments Inc., s-8215a Datasheet - Page 8

• Manufacturer Part Number: s-8215a
• Description: S-8215a Series Battery Protection Ic
• Manufacturer: Seiko Instruments Inc.

8
BATTERY PROTECTION IC FOR 4-SERIAL / 5-SERIAL CELL PACK (SECONDARY PROTECTION)
S-8215A Series
3. Overcharge Detection Delay Time (t
4. Overcharge Timer Reset Delay Time (t
5. Transition Time to Test Mode (t
2. 3 Pch Open Drain Output Current
Increase V1 up to 5.0 V after setting V1 = V2 = V3 = V4 = V5 = 3.5 V. The overcharge detection delay time (t
period until the CO pin output changes.
Increase V1 up to 5.0 V (first rise), and decrease V1 down to 3.5 V within the overcharge detection delay time (t
setting V1 = V2 = V3 = V4 = V5 = 3.5 V. After that, increase V1 up to 5.0 V again (second rise), and detect the time period
till the CO pin output changes.
When the period from when V1 has fallen to the second rise is short, CO pin output changes after t
the first rise. If the period is gradually made longer, CO pin output changes after t
The overcharge timer reset delay time (t
Increase V6 up to 4.0 V, and decrease V6 again to 0 V after setting V1 = V2 = V3 = V4 = V5 = 3.5 V, and V6 = 0 V.
When the period from when V6 was raised to when it has fallen is short, if an overcharge detection operation is
performed subsequently, the delay time is t
gradually made longer, the delay time during the subsequent overcharge detection operation is shorter than t
transition time to test mode (t
Set SW1 and SW2 to OFF.
2. 3. 1 Active “H”
2. 3. 2 Active “L”
(1) CO pin source current (I
(2) CO pin leakage current “H” (I
(1) CO pin source current (I
(2) CO pin leakage current “H” (I
Set SW1 to ON after setting V1 = 5.5 V, V2 to V5 = 3.0 V, V6 = 0.5 V. I1 is the CO pin source current (I
that time.
Set SW1 to ON after setting V1 to V5 = 3.5 V, V6 = 0.5 V. I1 is the CO pin source current (I
Set V1 to V5 = 3.5 V, V6 = 17.5 V. I1 is the CO pin leakage current “H” (I
Set V1 = 5.5 V, V2 to V5 = 3.0 V, V6 = 17.5 V. I1 is the CO pin leakage current “H” (I
TST
) is the period from when V6 was raised to when it has fallen at that time.
COH
COH
TST
)
)
TR
COLH
COLH
) (Test circuit 2)
) is the period from V1 fall till the second rise at that time.
CU
CU
Seiko Instruments Inc.
)
)
. However, when the period from when V6 is raised to when it has fallen is
) (Test Circuit 1)
TR
) (Test Circuit 1)
CU
COLH
has elapsed since the second rise.
) at that time.
COLH
) at that time.
CU
COH
has elapsed since
) at that time.
Rev.1.1
CU
) is the time
CU
CU
COH
) after
. The
_00
) at