MCP73871-1CCI/ML

Product Overview

Category

The MCP73871-1CCI/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 MCP73871-1CCI/ML is a highly integrated solution for battery charging applications.
• It offers a compact size and low external component count, making it suitable for space-constrained designs.
• This IC provides various safety features such as thermal regulation, charge termination, and reverse battery protection.
• It supports multiple charging modes, including constant current (CC) and constant voltage (CV) charging.

Package

The MCP73871-1CCI/ML is available in a small 10-pin MLP package.

Essence

The essence of this product lies in its ability to efficiently and safely charge lithium-ion batteries while offering a compact and integrated solution.

Packaging/Quantity

The MCP73871-1CCI/ML is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 6.0V
• Charge Current Range: Up to 1A
• Programmable Charge Termination Current
• Preconditioning of Deeply Discharged Cells
• Automatic Recharge
• Battery Temperature Monitoring
• Thermal Regulation for Maximum Charge Rate Without Overheating
• Under-Voltage Lockout (UVLO)
• Reverse Battery Protection
• Status Indication Outputs

Detailed Pin Configuration

The MCP73871-1CCI/ML has the following pin configuration:

1. VBAT - Battery Voltage Input
2. PROG - Charge Current Programming Pin
3. STAT - Status Indication Output
4. PG - Power Good Output
5. TS - Battery Temperature Sense Input
6. VSS - Ground
7. CE - Charge Enable Input
8. VDD - Supply Voltage Input
9. STAT2 - Status Indication Output
10. STAT1 - Status Indication Output

Functional Features

• Constant Current (CC) Charging Mode: The MCP73871-1CCI/ML provides a programmable charge current, allowing for efficient charging of lithium-ion batteries.
• Constant Voltage (CV) Charging Mode: Once the battery voltage reaches the programmed threshold, the charger switches to constant voltage mode to ensure safe and accurate charging.
• Thermal Regulation: This feature prevents overheating by adjusting the charge rate based on the temperature of the device.
• Charge Termination: The MCP73871-1CCI/ML supports programmable charge termination current, ensuring that the battery is not overcharged.
• Reverse Battery Protection: This IC safeguards against reverse polarity connection, preventing damage to the charger and battery.

Advantages and Disadvantages

Advantages

• Compact size and low external component count
• Multiple safety features for reliable charging
• Programmable charge current and termination current
• Thermal regulation for efficient charging without overheating

Disadvantages

• Limited to single-cell lithium-ion battery charging
• Requires careful consideration of input voltage range

Working Principles

The MCP73871-1CCI/ML operates by regulating the charge current and voltage to the connected lithium-ion battery. It uses a combination of constant current and constant voltage charging modes to ensure efficient and safe charging. The IC monitors the battery temperature and adjusts the charge rate accordingly to prevent overheating. Additionally, it incorporates various safety features such as reverse battery protection and charge termination to protect both the battery and the charger.

Detailed Application Field Plans

The MCP73871-1CCI/ML is widely used in portable electronic devices, such as smartphones, tablets, and wearable devices. It is also utilized in battery-powered medical devices, handheld gaming consoles, and other portable consumer electronics. The compact size and integrated features make it suitable for space-constrained designs.

Detailed and Complete Alternative Models

• MCP73831: Similar to the MCP73871-1CCI/ML but with a lower charge current capability.
• MCP73861: Offers similar functionality but with a different pin configuration.
• MCP73881: Provides higher charge current capability for faster charging.

These alternative models offer similar features and can be considered based on specific application requirements.

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