MCP73833-BZI/MF

Product Overview

Category

The MCP73833-BZI/MF 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 MCP73833-BZI/MF is a highly integrated solution for portable devices.
• It offers a compact size and low external component count, making it suitable for space-constrained applications.
• This product provides a complete charging solution with features like constant current pre-conditioning, constant voltage charging, and charge termination.

Package

The MCP73833-BZI/MF is available in a small 10-pin MSOP package.

Essence

The essence of this product lies in its ability to efficiently and safely charge lithium-ion batteries, ensuring optimal performance and longevity.

Packaging/Quantity

The MCP73833-BZI/MF 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: 15mA to 500mA
• Pre-Conditioning Current: 100mA (typical)
• Charge Termination Options: C/10 or Timer
• Battery Recharge Threshold: 2.9V (typical)
• Battery Full Threshold: 4.2V (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73833-BZI/MF has the following pin configuration:

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

Functional Features

1. Constant Current Pre-Conditioning: The MCP73833-BZI/MF provides a pre-conditioning current to prepare the battery for charging, ensuring optimal performance.
2. Constant Voltage Charging: Once the battery voltage reaches a certain threshold, the charger switches to constant voltage mode to complete the charging process.
3. Charge Termination Options: This product offers two charge termination options - C/10 or Timer. The charger automatically terminates the charging process based on the selected option.
4. Thermal Regulation: The MCP73833-BZI/MF incorporates thermal regulation to prevent overheating during charging, ensuring safe operation.

Advantages and Disadvantages

Advantages

• Compact size and low external component count
• Efficient and safe charging of lithium-ion batteries
• Multiple charge termination options for flexibility
• Thermal regulation for enhanced safety

Disadvantages

• Limited to single-cell battery charging
• Input voltage range may not be suitable for all applications

Working Principles

The MCP73833-BZI/MF operates by regulating the charging current and voltage to ensure proper charging of lithium-ion batteries. It starts with a constant current pre-conditioning phase, gradually increasing the charging current until the battery voltage reaches the full threshold. At that point, it switches to constant voltage mode to maintain a steady voltage and complete the charging process. The charger also monitors temperature to prevent overheating.

Detailed Application Field Plans

The MCP73833-BZI/MF is widely used in various portable electronic devices, including smartphones, tablets, digital cameras, portable media players, and handheld gaming consoles. Its compact size and efficient charging capabilities make it suitable for applications where space is limited, and reliable battery performance is crucial.

Detailed and Complete Alternative Models

1. MCP73831-BZI/MF: Similar to the MCP73833-BZI/MF, but with a lower charge current range (15mA to 200mA).
2. MCP73837-BZI/MF: Similar to the MCP73833-BZI/MF, but with a higher charge current range (15mA to 1000mA).
3. MCP73871-BZI/MF: A dual-cell battery charger controller with similar features and characteristics as the MCP73833-BZI/MF.

These alternative models provide options for different charging requirements and can be considered based on specific application needs.

In conclusion, the MCP73833-BZI/MF is a highly integrated battery charger controller designed for single-cell lithium-ion batteries. With its compact size, efficient charging capabilities, and multiple charge termination options, it offers a reliable solution for various portable electronic devices.