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Manufacturer Part #


MCP73811 Series 6 V Single-Cell Li-Ion/Li-Polymer Battery Charge Controller

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Date Code: 1903
Product Specification Section
Technical Attributes
Attributes Table
Configuration: Linear
Number of Cells: 1
Supply Voltage: 3.75V to 6V
Operating Temp Range: -40°C to +85°C
Package Style:  SOT-23-5 (SOT-25)
Mounting Method: Surface Mount
Features & Applications

The MCP73811T-420I/OT is a 6V, simple, miniature single-cell, fully integrated Li-Ion/Li-Polymer Charge Management Controller designed for use in space limited and cost sensitive applications.

This device provide specific charge algorithms for single cell Li-Ion or Li-Polymer battery to achieve optimal capacity in the shortest charging time possible.


  • Complete Linear Charge Management Controller
    • Integrated Pass Transistor
    • Integrated Current Sense
    • Integrated Reverse Discharge Protection
  • Constant Current / Constant Voltage Operation with Thermal Regulation
  • High Accuracy Preset Voltage Regulation: + 1%
  • Voltage Regulation: 4.20V
  • Selectable Charge Current:
    • MCP73811: 85 mA / 450 mA
  • Programmable Charge Current:
    • MCP73812: 50 mA - 500 mA
  • Minimum External Components Required:
    • MCP73811: 2 Ceramic Capacitors
    • MCP73812: 2 Ceramic Capacitors and 1 Resistor
  • No Preconditioning
  • No End-of-Charge Control
  • No Undervoltage Lockout (UVLO)
  • Automatic Power-Down when Input Power Removed
  • Active High Charge Enable
  • Temperature Range:
    • -40°C to +85°C
  • Packaging:
    • 5-Lead SOT-23


  • Low-Cost Lithium-Ion/Lithium-Polymer Battery Chargers
  • Rechargeable Toys
  • Electronic Cigarettes
  • Bluetooth Headsets
  • USB Chargers
Pricing Section
Global Stock:
Cost Per Unit
Web Price:
$0.875 USD Each

$7.00 reeling fee is amortized over the number of components for each reel.
Mini-Reels are a custom product and are non-cancelable and non-returnable.