Microchip Technology MCP73871T-3CAI/ML

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Tape & Reel (TR) |
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Timer
Fault Protection Over Temperature
Charge Current - Max 1.1A
Battery Pack Voltage 4.35V
Voltage - Supply (Max) 6V
Interface USB
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 20-VFQFN Exposed Pad
Supplier Device Package 20-QFN (4x4)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MCP73871T-3CAI/ML is a specialized linear charger for single-cell Lithium Ion/Polymer batteries requiring a 4.35V charge voltage. It delivers up to 1.1A of charge current and includes over-temperature protection for enhanced safety. Housed in a compact 20-VFQFN package, this device operates over an industrial temperature range of -40°C to 85°C, making it suitable for high-performance portable electronics that demand maximum battery capacity.

  • Maximized Battery Capacity: Supports 4.35V charging to unlock up to 10% more capacity from compatible Li-Polymer cells.
  • Robust Protection: Over Temperature protection prevents thermal damage during fast charging.
  • Industrial Temperature Range: Operates reliably from -40°C to 85°C for diverse applications.
  • Compact Design: The 20-VFQFN package is ideal for miniaturized portable devices.
  • High Charge Current: 1.1A capability enables faster charging cycles.

High-Capacity Smartphones

Ideal for modern smartphones with high-capacity cells that charge to 4.35V, extracting maximum energy density for longer battery life.

Advanced Wearables

Suitable for advanced smartwatches and fitness bands that utilize high-voltage Li-Polymer cells to achieve slim form factors.

Portable Power Banks

Enables efficient charging of high-density 4.35V cells inside compact power banks, maximizing their capacity.

Drones and RC Hobby

Provides a reliable charging solution for single-cell Li-Polymer packs used in small drones and RC vehicles, ensuring safe operation.

Medical Wearables

Supports continuous health monitoring devices that require a precise 4.35V charge voltage and reliable thermal protection.

Q: What battery chemistry is supported?
A: This charger is for Lithium Ion/Polymer batteries.
Q: How many cells does it support?
A: It supports a single-cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 1.1A.
Q: What is the battery voltage?
A: The battery regulation voltage is 4.35V.
Q: What fault protection is available?
A: It features Over Temperature protection.
Q: What is the package type?
A: It comes in a 20-VFQFN Exposed Pad package.
Base Product Number : MCP73871
1.1A 20-VFQFN 4.35V Battery Charger Linear Lithium Ion/Polymer USB
Q: What battery chemistry is supported?
A: This charger is for Lithium Ion/Polymer batteries.
Q: How many cells does it support?
A: It supports a single-cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 1.1A.
Q: What is the battery voltage?
A: The battery regulation voltage is 4.35V.
Q: What fault protection is available?
A: It features Over Temperature protection.
Q: What is the package type?
A: It comes in a 20-VFQFN Exposed Pad package.