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uP8207

Secondary Over-Voltage Protection for Battery

General Description

The uP8207 series is used for secondary protection of lithium-ion rechargeable batteries, and incorporates a highaccuracy voltage detection circuit and a delay circuit. Short circuits between cells accommodate series connection of two to three cells.

Pin Configuration & Typical Application Circuit


SOT563-6L

SOT563-6L

Feature

  • High Accuracy Voltage Detection Circuit for Each Cell
    • Overcharge Detection Voltage n (n = 1 to 3)
      4.20V to 4.70V (in 50mV steps)
      Accuracy: 20mV (+25°C)
      Accuracy: 30mV (0°C to +60°C) 
    • Overcharge Hysteresis Voltage n (n = 1 to 3)-0.30V±50mV
  • Delay Time for Overcharge Detection Can Be Set by An Internal Circuit (No External Capacitors Required)
  • High Withstand Voltage Devices:Absolute Maximum Rating 26V
  • Wide Operating Voltage Range: 3.6V to 24V
  • Wide Operating Temperature Range: -40°C to +85°C
  • Low Current Consumption
    • At 3.8V for Each Cell: 2.0uA max. (+25°C)
    • At 2.0V for Each Cell: 0.3uA max. (+25°C)
  • CO Pull Up Voltage : 4.7V
  • Available in TSOT23-6L and SOT563-6L Packages
  • RoHS Compliant and Halogen Free

Application

  • Lithium-Ion Rechargeable Battery Packs (for Secondary Protection).
  • Notebook Computers.
  • Portable Instrumentation.
  • Portable Equipment.