CW1073 is 6~7 cells protection IC，dual discharge loop protections, full protection and cell balancing features.

Features

• Overcharge protection

       • Threshold 3.750V, and 4.175V ~4.450V,   25mV steps,  ±25mV accuracy

• Over discharge protection

      • Threshold from 2.100V to 3.000V,   100mV steps,   ±80mV accuracy

• Excess discharge current protection

      • Excess discharge current 1

            • Threshold from 0.050V to 0.100V,   50mV steps,  ±5mV  accuracy

      • Excess discharge current 2

            • Threshold from 0.100V to 0.200V,   100mV steps,  ±5mV  accuracy

      • Short circuits protection

            • Threshold from 0.200V to 0.500V,   100mV steps,   ±10mV  accuracy

• Flexible temperature protection threshold (Set up by external resistor)

      • Charging over&under temperature protection

      • Discharging over temperature protection

      • Discharging under temperature protection(optional)）

• Cell balancing function

• SEL pin to choose 6 or 7 series battery

• Open wire detection

• Load detection

• PWM control discharge MOSFET

• Ultra low power dissipation

      • Normal working 15μA  (25°C)

      • Sleep mode 5μA   (25°C)

• Package type: SSOP24

Application Field

• Power tools

• E-bike

• Vacuum cleaner

• Other Lithium-ion or Lithium polymer battery packs

Application Circuits