MCP73841T-410I/UN

Product Overview

Category

The MCP73841T-410I/UN 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 MCP73841T-410I/UN 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.
• The device supports constant current and constant voltage charging modes.
• It includes various safety features such as thermal regulation, charge termination, and reverse battery protection.

Package

The MCP73841T-410I/UN is available in a 10-pin, 2x3 DFN (Dual Flat No-Lead) package.

Essence

The essence of this product lies in its ability to provide efficient and reliable charging for lithium-ion batteries, ensuring optimal performance and longevity.

Packaging/Quantity

The MCP73841T-410I/UN is typically packaged in reels or tubes. The exact quantity per package may vary depending on the manufacturer's specifications.

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
• Under-Voltage Lockout (UVLO)
• Reverse Battery Protection
• Status Indication Outputs

Detailed Pin Configuration

1. VDD - Power supply input
2. STAT - Status indication output
3. PROG - Charge termination current programming input
4. TS - Battery temperature sense input
5. VSS - Ground
6. PG - Power good output
7. CE - Charge enable input
8. STAT2 - Status indication output
9. BAT - Battery connection
10. VDD - Power supply input

Functional Features

• Constant current and constant voltage charging modes
• Programmable charge termination current for different battery capacities
• Preconditioning of deeply discharged cells to improve battery life
• Automatic recharge feature for interrupted charging cycles
• Battery temperature monitoring for enhanced safety
• Thermal regulation to prevent overheating
• Under-voltage lockout (UVLO) to protect the battery from deep discharge
• Reverse battery protection to prevent damage due to reverse polarity
• Status indication outputs for visual feedback on charging status

Advantages and Disadvantages

Advantages

• Compact size and low external component count
• Efficient and reliable charging performance
• Supports multiple lithium-ion battery chemistries
• Integrated safety features for protection against various faults
• Programmable charge termination current for flexibility

Disadvantages

• Limited to single-cell battery charging applications
• Requires careful consideration of input voltage range compatibility

Working Principles

The MCP73841T-410I/UN operates by regulating the charging current and voltage according to the selected charging mode. In the constant current mode, a fixed current is supplied to the battery until the programmed charge termination current is reached. At this point, the charger switches to the constant voltage mode, maintaining a steady voltage until the charging process is complete.

The device continuously monitors the battery temperature and adjusts the charging parameters accordingly to prevent overheating. It also incorporates safety measures such as under-voltage lockout and reverse battery protection to safeguard the battery and the charging circuitry.

Detailed Application Field Plans

The MCP73841T-410I/UN is widely used in portable electronic devices, such as smartphones, tablets, digital cameras, and portable gaming consoles. It is also employed in various industrial applications, including handheld instruments, wireless sensors, and medical devices.

Detailed and Complete Alternative Models

• MCP73831T-2ACI/OT: Similar functionality with a lower charge current capability.
• MCP73871-2CCI/ML: Higher charge current capability with additional features like USB On-The-Go (OTG) support.
• MCP73861-1CCI/ML: Enhanced thermal regulation and charge termination options.

These alternative models offer different specifications and features to cater to specific application requirements.

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