Microchip Technology Inc
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MCP73871

USB/AC Battery Charger with Power Path Management

Status: In Production

Features:

  • Integrated System Load Sharing and Battery Charge Management
  • Simultaneously Power the System and Charge the Li-Ion Battery
  • Integrated Pass Transistors
  • Integrated Current Sense
  • Integrated Reverse Discharge Protection
  • Selectable Input Power Sources: USB Port or AC-DC Wall Adapter
  • Preset High Accuracy Charge Voltage Options:4.10V, 4.20V, 4.35V or 4.40V
  • ±0.5% Regulation Tolerance
  • Maximum 1.8A Total Input Current Control
  • Resistor Programmable Fast Charge Current Control: 50 mA to 1A
  • Resistor Programmable Termination Set Point
  • Selectable USB Input Current Control: Absolute Maximum: 100 mA (L) / 500 mA (H)
  • Automatic Recharge
  • Automatic End-of-Charge Control
  • Safety Timer With Timer Enable/Disable Control
  • 0.1C Preconditioning for Deeply Depleted Cells
  • Battery Cell Temperature Monitor
  • Undervoltage Lockout (UVLO)
  • Low Battery Status Indicator (LBO)
  • Power-Good Status Indicator (PG)
  • Charge Status and Fault Condition Indicators
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP73871 device is a 1A 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’s also capable of autonomous power source selection between input or battery. The MCP73871 device employs a constant current/constant voltage (CC/CV) charge algorithm with selectable charge termination point. The constant voltage regulation is fixed with four available options: 4.10V, 4.20V, 4.35V, or 4.40V.

Additional Features
    • Integrated System Load Sharing and Battery Charge Management
    • Simultaneously Power the System and Charge the Li-Ion Battery
    • Integrated Pass Transistors
    • Integrated Current Sense
    • Integrated Reverse Discharge Protection
    • Selectable Input Power Sources: USB Port or AC-DC Wall Adapter
    • Preset High Accuracy Charge Voltage Options:4.10V, 4.20V, 4.35V or 4.40V
    • ±0.5% Regulation Tolerance
    • Maximum 1.8A Total Input Current Control
    • Resistor Programmable Fast Charge Current Control: 50 mA to 1A
    • Resistor Programmable Termination Set Point
    • Selectable USB Input Current Control: Absolute Maximum: 100 mA (L) / 500 mA (H)
    • Automatic Recharge
    • Automatic End-of-Charge Control
    • Safety Timer With Timer Enable/Disable Control
    • 0.1C Preconditioning for Deeply Depleted Cells
    • Battery Cell Temperature Monitor
    • Undervoltage Lockout (UVLO)
    • Low Battery Status Indicator (LBO)
    • Power-Good Status Indicator (PG)
    • Charge Status and Fault Condition Indicators
Parametrics
Name
Value
Linear Mode
Yes
# of Cells
1
Int/Ext FET
Int
Vcc Range (V)
4.4 to 6
Voltage Regulation Accuracy (%)
0.5
Temperature Monitor
Yes
Charge Safety Timers
Yes
Max Thermal Regulation
Yes

Documents

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Data Sheets

Product Selection Tools

Sell Sheets

05/16/2011
120KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MCP73871 Demo Board with Voltage Proportional Current Control (VPCC)
MCP73871 Demo Board with Voltage Proportional Current Control (VPCC) ( MCP73871DM-VPCC )

The MCP73871 Demo Board with Voltage Proportional Current Control is designed to demonstrate Microchip's stand-alone linear Li-Ion battery charger with system power path and load sharing management control solution. The MCP73871 integrates the required elements to meet design challenges when developing new Li-Ion / Li-Polymer batteries powered products.

The MCP73871 Demo Board with...

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MCP73871 Li-Ion Charger Evaluation Board
MCP73871 Li-Ion Charger Evaluation Board ( MCP73871EV )

The MCP73871 Evaluation Board is designed to demonstrate Microchip's stand-alone linear Li-Ion battery charger with system power path and load sharing management control solution. The system load is also supported by the Li-Ion battery when input power is disconnected. A number of device options allow the MCP73871 device to be utilized in a variety of applications. Refer to the MCP73871 data sheet...

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RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP73871-1AAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-1CAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-1AAI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-1CCI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-1CCI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-4CCI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-4CAI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-4CCI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-1CAI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-2CCI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-2CCI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-3CCI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-2CAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-2AAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871T-2AAI/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-3CAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP73871-4CAI/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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