MCP73871-3CAI/ML

Product Overview

Category

The MCP73871-3CAI/ML belongs to the category of battery charger ICs.

Use

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

Characteristics

• The MCP73871-3CAI/ML is a highly integrated linear charge management controller.
• It provides a complete charging solution for various lithium-ion battery chemistries.
• This IC offers a wide range of programmable features, making it suitable for diverse applications.
• It supports constant current (CC) and constant voltage (CV) charging modes.
• The MCP73871-3CAI/ML includes safety features such as thermal regulation, overvoltage protection, and reverse discharge protection.

Package

The MCP73871-3CAI/ML is available in a small 10-pin MSOP package.

Essence

This battery charger IC is designed to provide efficient and reliable charging for lithium-ion batteries, ensuring optimal performance and longevity.

Packaging/Quantity

The MCP73871-3CAI/ML is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage: 4.5V to 6.0V
• Charging Current Range: 15mA to 1000mA
• Programmable Charge Termination Current: 1/10th, 1/20th, or 1/40th of the programmed fast charge current
• Programmable Preconditioning Timer: 0 to 32 hours
• Programmable Safety Timer: 0 to 32 hours
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73871-3CAI/ML has the following pin configuration:

1. VBAT: Battery Voltage Input
2. PROG: Programming Pin for Setting Charging Current
3. STAT: Status Output Pin
4. PGND: Power Ground
5. THERM: Thermal Regulation Input
6. TS: Temperature Sense Input
7. VSS: Ground
8. VDD: Supply Voltage Input
9. CE: Charge Enable Input
10. DP: D+ USB Data Line

Functional Features

• Constant Current (CC) and Constant Voltage (CV) charging modes
• Programmable charge termination current and timers
• Automatic recharge feature
• Reverse discharge protection
• Overvoltage protection
• Thermal regulation

Advantages and Disadvantages

Advantages

• Highly integrated solution for lithium-ion battery charging
• Wide range of programmable features for customization
• Supports multiple lithium-ion battery chemistries
• Compact package size for space-constrained applications
• Comprehensive safety features for reliable charging

Disadvantages

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

Working Principles

The MCP73871-3CAI/ML operates by regulating the charging current and voltage to ensure safe and efficient charging of lithium-ion batteries. It utilizes a combination of constant current and constant voltage charging modes to optimize the charging process. The IC monitors the battery temperature, voltage, and current to provide accurate control and protection during the charging cycle.

Detailed Application Field Plans

The MCP73871-3CAI/ML is widely used in various portable electronic devices, including smartphones, tablets, digital cameras, and portable media players. It is also employed in power banks, wireless headphones, and other battery-powered consumer electronics. Additionally, this battery charger IC finds applications in industrial equipment, medical devices, and automotive systems that utilize lithium-ion batteries.

Detailed and Complete Alternative Models

1. MCP73831-2ATI/OT: Similar functionality with a lower charging current range.
2. MCP73844-420I/UN: Supports higher charging currents and offers additional safety features.
3. MCP73861-2ATI/OT: Provides similar charging capabilities with a different pin configuration.

These alternative models offer similar functionality to the MCP73871-3CAI/ML, catering to different charging requirements and pin configurations.

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