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S-8244 Datasheet, PDF (8/27 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) | |||
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BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8244 Series
Rev.3.3_00
 Test Circuits
(1) Test Condition 1, Test Circuit 1
Conditions:
⢠Set switches 1 and 2 to OFF for CMOS output models.
⢠Set switch 1 to ON and switch 2 to OFF for Nch open drain models.
⢠Set switch 1 to OFF and switch 2 to ON for Pch open drain models.
Definitions:
⢠Set V1, V2, V3 and V4 to 3.5 V and gradually increase V1:
Overcharge detection voltage 1 (VCU1) is defined as V1 voltage when CO is turned to âHâ (for
CMOS output active âHâ or Nch open drain) or âLâ (for CMOS output active âLâ or Pch open
drain).
⢠Next, gradually decrease V1:
Overcharge hysteresis voltage (VCD1) is defined as a difference between VCU1 and V1 when CO
is turned to âLâ (for CMOS output active âHâ or Nch open drain) or âHâ (for CMOS output active
âLâ or Pch open drain).
(2) Test Condition 2, Test Circuit 1
Conditions:
⢠Set switches 1 and 2 to OFF for CMOS output models.
⢠Set switch 1 to ON and switch 2 to OFF for Nch open drain models.
⢠Set switch 1 to OFF and switch 2 to ON for Pch open drain models.
Definitions:
⢠Set V1, V2, V3 and V4 to 3.5 V and gradually increase V2.
Overcharge detection voltage 2 (VCU2) is defined as V2 voltage when CO is turned to âHâ (for
CMOS output active âHâ or Nch open drain) or âLâ (for CMOS output active âLâ or Pch open
drain).
⢠Next, gradually decrease V2.
Overcharge hysteresis voltage (VCD2) is defined as a difference between VCU2 and V2 when CO
is turned to âLâ (for CMOS output active âHâ or Nch open drain) or âHâ (for CMOS output active
âLâ or Pch open drain).
(3) Test Condition 3, Test Circuit 1
Conditions:
⢠Set switches 1 and 2 to OFF for CMOS output models.
⢠Set switch 1 to ON and switch 2 to OFF for Nch open drain models.
⢠Set switch 1 to OFF and switch 2 to ON for Pch open drain models.
Definitions:
⢠Set V1, V2, V3 and V4 to 3.5 V and gradually increase V3.
Overcharge detection voltage 3 (VCU3) is defined as V3 voltage when CO is turned to âHâ (for
CMOS output active âHâ or Nch open drain) or âLâ (for CMOS output active âLâ or Pch open
drain).
⢠Next gradually decrease V3.
Overcharge hysteresis voltage (VCD3) is defined as a difference between VCU3 and V3 when CO
is turned to âLâ (for CMOS output active âHâ or Nch open drain) or âHâ (for CMOS output active
âLâ or Pch open drain).
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Seiko Instruments Inc.
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