HOME > Product Tree > Power Supply ICs > Lithium-ion Battery Protection ICs > S-8244 series

Overview - S-8244 series

Battery Protection IC for 1 to 4 Cells (Secondary Protection) S-8244 series

The S-8244 series is used for secondary protection of lithium-ion batteries with from one to four cells, and incorporates a high-precision voltage detector circuit and a delay circuit. Short-circuits between cells accommodate series connection of one to four cells.

DATA SHEET
2010.5.11

Features


    • Internal high-precision voltage detector circuit
      1) Overcharge detection voltage range:
          3.70 to 4.50V(at a 5 mV/step): Accuracy of ± 25mV (at +25°C), Accuracy ±50mV (at -40 to +85°C)
      2) Hysteresis: 5 optional models available and selectable:
          0.38 ± 0.1V, 0.25 ± 0.07V, 0.13 ± 0.04V, 0.045 ± 0.02V, None
    • High withstand voltage device (absolute maximum rating: 26V)
    • Wide operating voltage range: 3.6V to 24V (refers to the range in which the delay circuit can operate normally after overvoltage is detected)
    • Delay time during detection: Can be set by an external capacitor.
    • Low current consumption
      At 3.5V for each cell: 3.0 µA max. (+25°C),
      At 2.3V for each cell: 2.4 µA max. (+25°C)
    • Output logic and form - 5 types:
      CMOS output active "H"
      CMOS output active "L"
      Pch open drain output active "L"
      Nch open drain output active "H"
      Nch open drain output active "L"
      (only CMOS output for 0.045V hysteresis models)
    • Small package: SNT-8A, 8-pin MSOP, TMSOP-8
    • Lead-free products

Applications


    • Secondary protection of lithium ion rechargeable batteries

Standard Circuit