MCP73832T-2ACI/OT

Product Overview

Category

The MCP73832T-2ACI/OT 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

• Input voltage range: 3.75V to 6V
• Maximum charge current: 1.5A
• Programmable charge current
• Automatic charge termination
• Reverse discharge protection
• Thermal regulation and protection
• Small form factor package

Package

The MCP73832T-2ACI/OT is available in a 10-pin, thermally enhanced MSOP package.

Essence

The essence of the MCP73832T-2ACI/OT lies in its ability to efficiently and safely charge lithium-ion batteries with programmable charge currents and built-in protection features.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 3.75V to 6V
• Charge Current Range: Up to 1.5A
• Preconditioning Current: 10% of programmed current
• Charge Termination: Programmable timer, minimum current, maximum time
• Battery Recharge Threshold: 2.9V
• Reverse Discharge Protection Threshold: 2.5V
• Thermal Regulation Threshold: 110°C
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73832T-2ACI/OT 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. 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. Programmable Charge Current: The PROG pin allows the user to set the desired charge current, providing flexibility for different battery capacities.
2. Automatic Charge Termination: The MCP73832T-2ACI/OT automatically terminates the charging process when the battery is fully charged, preventing overcharging and potential damage.
3. Reverse Discharge Protection: This feature prevents the battery from discharging back into the charger when the input power is removed.
4. Thermal Regulation and Protection: The IC monitors its own temperature and adjusts the charge current to prevent overheating. It also includes thermal shutdown protection to safeguard against excessive temperatures.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Programmable charge current enables customization for different battery capacities.
• Automatic charge termination prevents overcharging and extends battery life.
• Reverse discharge protection ensures safe operation.
• Thermal regulation and protection enhance safety and reliability.

Disadvantages

• Limited to single-cell lithium-ion batteries, not suitable for multi-cell configurations.
• Requires external components for complete charging circuit implementation.

Working Principles

The MCP73832T-2ACI/OT operates by regulating the charge current based on the programmed settings and monitoring the battery voltage and temperature. It uses a combination of timers, voltage thresholds, and temperature sensing to determine the charging status and terminate the process when appropriate.

Detailed Application Field Plans

The MCP73832T-2ACI/OT finds applications in various portable electronic devices, such as smartphones, tablets, digital cameras, and portable gaming consoles. It is also used in power banks, wireless headphones, and other battery-powered devices that require efficient and safe charging of single-cell lithium-ion batteries.

Detailed and Complete Alternative Models

1. MCP73831T-2ACI/OT: Similar to the MCP73832T-2ACI/OT but with a lower maximum charge current of 500mA.
2. MCP73833T-2ACI/OT: Similar to the MCP73832T-2ACI/OT but with a higher maximum charge current of 2A.
3. MCP73837T-2ACI/OT: Similar to the MCP73832T-2ACI/OT but with additional features like USB On-The-Go (OTG) support.

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

In conclusion, the MCP73832T-2ACI/OT is a versatile battery charger IC designed for single-cell lithium-ion batteries. With its programmable charge current, automatic termination, and built-in protection features, it offers efficient and safe charging solutions for