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Details for Microchip Technology


Fully-Integrated Single Cell Lithium-Ion/Lithium-Polymer Charge Management Contr
Buy Directly from Microchip Technology (11662 in Stock)
$1.3100 per unit
Series Information for MCP73871-2AAI/ML - Microchip Technology


  • feature
    0.1C Preconditioning for Deeply Depleted Cells
  • feature
    4.10V, 4.20V, 4.35V or 4.40V
  • feature
    Absolute Maximum: 100 mA (L)/500 mA (H)
  • feature
    Automatic End-of-Charge Control
  • feature
    Automatic Recharge
  • feature
    Battery Cell Temperature Monitor
  • feature
    Charge Status and Fault Condition Indicators
  • feature
    Complete Linear Charge Management Controller
  • feature
    Constant Current/Constant Voltage (CC/CV) Operation with Thermal Regulation
  • feature
    Integrated Current Sense
  • feature
    Integrated Pass Transistors
  • feature
    Integrated Reverse Discharge Protection
  • feature
    Low Battery Status Indicator (LBO)
  • feature
    Low-Loss Power-Path Management with Ideal Diode Operation
  • feature
    Maximum 1.8A Total Input Current Control
  • feature
    Numerous Selectable Options Available for a Variety of Applications:
  • feature
    Power-Good Status Indicator (PG)
  • feature
    Preset High Accuracy Charge Voltage Options:
  • feature
    Refer to Section 1.0 u201cElectrical Characteristicsu201d for Selectable Options
  • feature
    Refer to the Product Identification System for Standard Options
  • feature
    Resistor Programmable Fast Charge Current Control: 50 mA to 1A
  • feature
    Resistor Programmable Termination Set Point
  • feature
    Safety Timer With Timer Enable/Disable Control
  • feature
    Selectable Input Power Sources: USB Port or AC-DC Wall Adapter
  • feature
    Selectable USB Input Current Control
  • feature
    Simultaneously Power the System and Charge the Li-Ion Battery
  • feature
  • feature
    Undervoltage Lockout (UVLO)
  • feature
    Voltage Proportional Current Control (VPCC) ensures system load has priority over Li-Ion battery charge current
  • feature
    u00b10.5% Regulation Tolerance


The MCP73871 device is a fully integrated linear solution for system load sharing and Li-Ion/Li-Polymer battery charge management with AC-DC wall adapter and USB port power sources selection. It is also capable of autonomous power source selection between input and battery. Along with its small physical size, the low number of required external components makes the device ideally suited for portable applications. The MCP73871 device automatically obtains power for the system load from a single-cell Li-Ion battery or an input power source (AC-DC wall adapter or USB port). The MCP73871 device specifically adheres to the current drawn limits governed by the USB specification. With an AC-DC wall adapter providing power to the system, an external resistor sets the magnitude of 1A maximum charge current while supporting up to 1.8A total current for system load and battery charge current. The MCP73871 device employs a constant- current/constant-voltage (CC/CV) charge algorithm with selectable charge termination point. To accommodate new and emerging battery charging requirements, the constant voltage regulation is fixed with four available options: 4.10V, 4.20V, 4.35V or 4.40V. The MCP73871 device also limits the charge current based on the die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability. The MCP73871 device includes a low battery indicator, a power-good indicator and two charge status indicators that allow for outputs with LEDs or communication with host microcontrollers. The MCP73871 device is fully specified over the ambient temperature range of -40°C to +85°C. Stand-Alone System Load Sharing and Li-Ion/Li-Polymer Battery Charge Management Controller


Battery Type:
Li-Ion Li-Pol
Input Voltage:
Battery Charge Voltage:
Charge Current Max:
Battery IC Case Style:
No. of Pins:
No. of Series Cells:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (27-Jun-2018)
Base Number:
Battery Management Function:
Charger Protector Status Monitor
Operating Temperature Range:
-40°C to +85°C
Output Voltage Max:
Termination Type:
Surface Mount Device

Alternate Descriptions

Avnet America

Battery Charger Li-Ion/Li-Pol 50mA to 1000mA 4.2V 20-Pin QFN EP Tube

Avnet America product

Microchip Technology Inc

Fully-Integrated Single Cell Lithium-Ion/Lithium-Polymer Charge Management Contr

Avnet Europe

Battery Charger Li-Ion/Li-Pol 50mA to 1000mA 4.2V 20-Pin QFN EP Tube

Avnet Europe product


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