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S-8244AAMFN-CEMT2G Datasheet(PDF) 8 Page - Seiko Instruments Inc |
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S-8244AAMFN-CEMT2G Datasheet(HTML) 8 Page - Seiko Instruments Inc |
8 / 27 page BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Rev.3.3_00 Seiko Instruments Inc. 8 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 “H” (for CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” 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 “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active “L” 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 “H” (for CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” 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 “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active “L” 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 “H” (for CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” 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 “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active “L” or Pch open drain). |
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