MCP73841-420I/UN

Product Overview

Category

The MCP73841-420I/UN belongs to the category of battery charger ICs.

Use

This product is primarily used for charging single-cell lithium-ion (Li-Ion) or lithium-polymer (Li-Po) batteries.

Characteristics

• The MCP73841-420I/UN is a highly integrated solution for portable devices.
• It offers a compact and efficient charging solution for Li-Ion/Li-Po batteries.
• This IC provides various safety features to ensure reliable and safe charging.
• It supports multiple charging modes, such as constant current and constant voltage.

Package

The MCP73841-420I/UN is available in a small outline SOT-23 package.

Essence

The essence of this product lies in its ability to provide a reliable and efficient charging solution for Li-Ion/Li-Po batteries in portable devices.

Packaging/Quantity

The MCP73841-420I/UN is typically packaged in reels, with 3000 units per reel.

Specifications

• Input Voltage: 4.5V to 6.0V
• Charging Current: Up to 500mA
• Charge Termination: Programmable
• Preconditioning: Yes
• Temperature Range: -40°C to +85°C
• Battery Recharge Threshold: 2.9V
• Battery Full Threshold: 4.2V

Detailed Pin Configuration

The MCP73841-420I/UN 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. VDD: Supply Voltage Input
8. VSS: Ground

Functional Features

• Constant Current/Constant Voltage Charging
• Programmable Charge Termination
• Preconditioning of Deeply Discharged Batteries
• Thermal Regulation for Safe Charging
• Temperature Monitoring and Protection
• Charge Status Indication

Advantages and Disadvantages

Advantages

• Highly integrated solution
• Compact size
• Efficient charging performance
• Multiple charging modes
• Safety features for reliable charging

Disadvantages

• Limited charging current (up to 500mA)
• Restricted temperature range (-40°C to +85°C)

Working Principles

The MCP73841-420I/UN operates on the principle of constant current and constant voltage charging. It starts with a constant current phase until the battery voltage reaches a predetermined threshold. Then, it switches to a constant voltage mode to complete the charging process. The IC also incorporates safety features like thermal regulation and temperature monitoring to ensure safe charging.

Detailed Application Field Plans

The MCP73841-420I/UN is widely used in various portable devices that require single-cell Li-Ion/Li-Po battery charging. Some common application fields include:

1. Smartphones and Tablets
2. Portable Media Players
3. Bluetooth Headsets
4. GPS Navigation Systems
5. Portable Gaming Devices

Detailed and Complete Alternative Models

1. MCP73831-2ATI/OT: Similar functionality with lower charging current capability.
2. MCP73871-2CCI/ML: Higher charging current capability with additional features.
3. MCP73861-2CCI/ML: Enhanced thermal regulation and temperature monitoring capabilities.

These alternative models provide similar functionality to the MCP73841-420I/UN but may have different specifications or additional features.

In conclusion, the MCP73841-420I/UN is a highly integrated battery charger IC designed for single-cell Li-Ion/Li-Po batteries. It offers efficient charging performance, multiple safety features, and is widely used in various portable devices.