MCP73863T-I/SL

Product Overview

Category

The MCP73863T-I/SL belongs to the category of battery charger controllers.

Use

It is primarily used for charging single-cell lithium-ion (Li-Ion), lithium-polymer (Li-Po), and lithium iron phosphate (LiFePO4) batteries.

Characteristics

• The MCP73863T-I/SL is a highly integrated solution that provides complete charge management for single-cell Li-Ion/Li-Po/LiFePO4 batteries.
• It offers a constant current/constant voltage (CC/CV) charge algorithm with programmable charge current up to 1.5A.
• The device operates from a USB port or an AC wall adapter, making it suitable for various applications.
• It includes features like thermal regulation, charge status indication, and automatic recharge.

Package

The MCP73863T-I/SL comes in a small outline IC (SOIC) package.

Essence

The essence of this product lies in its ability to efficiently and safely charge single-cell lithium-ion batteries, providing a reliable power source for portable electronic devices.

Packaging/Quantity

The MCP73863T-I/SL is typically available in reels, with 2500 units per reel.

Specifications

• Input Voltage Range: 3.75V to 6V
• Programmable Charge Current: Up to 1.5A
• Preconditioning Mode: Yes
• Charge Termination: Automatic
• Battery Temperature Monitoring: Yes
• Thermal Regulation: Yes
• Charge Status Indication: Yes
• Reverse Discharge Protection: Yes
• Under Voltage Lockout (UVLO): Yes
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73863T-I/SL has the following pin configuration:

1. VBAT - Battery Voltage Input
2. PROG - Charge Current Programming Pin
3. STAT - Charge Status Output
4. PGND - Power Ground
5. VDD - Supply Voltage Input
6. TS - Battery Temperature Sense Input
7. CE - Charge Enable Input
8. DP - D+ USB Data Line
9. DM - D- USB Data Line

Functional Features

1. Constant Current/Constant Voltage (CC/CV) Charging Algorithm: The MCP73863T-I/SL uses a CC/CV algorithm to ensure efficient and safe charging of lithium-ion batteries.
2. Programmable Charge Current: The charge current can be programmed up to 1.5A, allowing flexibility in charging different battery capacities.
3. Thermal Regulation: The device incorporates thermal regulation to prevent overheating during the charging process, ensuring safe operation.
4. Charge Status Indication: The STAT pin provides information about the charging status, enabling easy monitoring of the charging process.
5. Automatic Recharge: Once the battery voltage drops below a certain threshold, the MCP73863T-I/SL automatically initiates a recharge cycle.

Advantages and Disadvantages

Advantages

• Highly integrated solution for single-cell Li-Ion/Li-Po/LiFePO4 battery charging.
• Programmable charge current allows flexibility in charging different battery capacities.
• Thermal regulation prevents overheating and ensures safe operation.
• Charge status indication enables easy monitoring of the charging process.
• Automatic recharge feature ensures continuous power supply.

Disadvantages

• Limited to single-cell battery charging only.
• Requires external components for complete charging circuit implementation.

Working Principles

The MCP73863T-I/SL operates based on a constant current/constant voltage (CC/CV) charging algorithm. Initially, it applies a constant current to the battery until the battery voltage reaches a predetermined threshold. Then, it switches to a constant voltage mode, maintaining the battery voltage at the threshold level while reducing the charging current. This ensures efficient and safe charging of the battery.

Detailed Application Field Plans

The MCP73863T-I/SL finds applications in various portable electronic devices that utilize single-cell lithium-ion batteries. Some potential application fields include: - Smartphones and tablets - Portable media players - Bluetooth headsets - GPS devices - Wearable devices

Detailed and Complete Alternative Models

1. MCP73831: Similar to the MCP73863T-I/SL, but with a lower charge current capability of up to 500mA.
2. MCP73871: Offers higher charge current capability of up to 2A, suitable for larger capacity batteries.
3. MCP73837: Provides additional features like battery temperature monitoring and thermal regulation control.

These alternative models offer different specifications and features, allowing users to choose the most suitable option based on their specific requirements.

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