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    MCP73831T-2ACI/MC

    The MCP73831/2 devices are highly advanced linear
    charge management controllers for use in spacelimited, cost-sensitive applications. The MCP73831/2
    are available in an 8-Lead, 2 mm x 3 mm DFN package
    or a 5-Lead, SOT-23 package. Along with their small
    physical size, the low number of external components
    required make the MCP73831/2 ideally suited for
    portable applications. For applications charging from a
    USB port, the MCP73831/2 adhere to all the
    specifications governing the USB power bus.
    The MCP73831/2 employ a constant-current/constantvoltage charge algorithm with selectable
    preconditioning and charge termination. The constant
    voltage regulation is fixed with four available options:
    4.20V, 4.35V, 4.40V or 4.50V, to accommodate new,
    emerging battery charging requirements. The constant
    current value is set with one external resistor. The
    MCP73831/2 devices limit the charge current based on
    die temperature during high power or high ambient
    conditions. This thermal regulation optimizes the
    charge cycle time while maintaining device reliability.
    Several options are available for the preconditioning
    threshold, preconditioning current value, charge
    termination value and automatic recharge threshold.
    The preconditioning value and charge termination
    value are set as a ratio or percentage of the
    programmed constant current value. Preconditioning
    can be disabled. Refer to Section 1.0 “Electrical
    Characteristics” for available options and the
    Product Identification System for standard options.
    The MCP73831/2 devices are fully specified over the
    ambient temperature range of -40°C to +85°C.

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      SPECIFICATION

      • Linear Charge Management Controller:
      – Integrated Pass Transistor
      – Integrated Current Sense
      – Reverse Discharge Protection
      • High-Accuracy Preset Voltage Regulation: + 0.75%
      • Four Voltage Regulation Options:
      – 4.20V, 4.35V, 4.40V, 4.50V
      • Programmable Charge Current: 15 mA to 500 mA
      • Selectable Preconditioning:
      – 10%, 20%, 40%, or Disable
      • Selectable End-of-Charge Control:
      – 5%, 7.5%, 10%, or 20%
      • Charge Status Output
      – Tri-State Output – MCP73831
      – Open-Drain Output – MCP73832
      • Automatic Power-Down
      • Thermal Regulation
      • Temperature Range: -40°C to +85°C
      • Packaging:
      – 8-Lead, 2 mm x 3 mm DFN
      – 5-Lead, SOT-23