MCP73123-22SI/MF

Product Overview

Category

The MCP73123-22SI/MF belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging rechargeable batteries, providing a reliable and efficient solution for various electronic devices.

Characteristics

• Integrated circuit for battery charging
• High efficiency and reliability
• Compact package design
• Wide operating voltage range
• Advanced charging algorithms

Package

The MCP73123-22SI/MF is available in a small outline integrated circuit (SOIC) package. This package ensures easy integration into different electronic systems.

Essence

The essence of the MCP73123-22SI/MF lies in its ability to efficiently charge rechargeable batteries while ensuring their longevity and safety.

Packaging/Quantity

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

Specifications

• Input Voltage Range: 4.5V - 6.5V
• Charging Current Range: 100mA - 500mA
• Charge Termination Voltage: 4.2V ±1%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73123-22SI/MF has the following pin configuration:

1. VDD - Power supply input
2. GND - Ground reference
3. STAT - Status output pin
4. PROG - Programming input pin
5. TS - Temperature sense input pin
6. BAT - Battery connection pin

Functional Features

• Constant current and constant voltage charging modes
• Programmable charging current
• Automatic charge termination
• Temperature monitoring for safe charging
• LED indication for charging status
• Reverse battery protection

Advantages and Disadvantages

Advantages

• High charging efficiency
• Compact and easy-to-integrate package
• Wide operating voltage range
• Advanced charging algorithms for optimal battery performance
• Temperature monitoring ensures safe charging

Disadvantages

• Limited charging current range (100mA - 500mA)
• Requires external programming for specific charging current settings

Working Principles

The MCP73123-22SI/MF operates based on a constant current and constant voltage charging algorithm. It starts by supplying a constant current to the battery until it reaches the charge termination voltage. At this point, the charger switches to a constant voltage mode, maintaining the battery voltage at the termination level.

During the charging process, the MCP73123-22SI/MF continuously monitors the battery temperature using the TS pin. If the temperature exceeds a predefined threshold, the charger reduces the charging current to prevent overheating and potential damage to the battery.

Detailed Application Field Plans

The MCP73123-22SI/MF is widely used in various applications that require battery charging capabilities. Some of the common application fields include:

1. Portable electronic devices (e.g., smartphones, tablets, portable speakers)
2. Wearable devices (e.g., smartwatches, fitness trackers)
3. Medical devices (e.g., portable medical equipment, patient monitoring devices)
4. Industrial equipment (e.g., handheld tools, wireless sensors)
5. Automotive electronics (e.g., electric vehicles, hybrid vehicles)

Detailed and Complete Alternative Models

1. MCP73871: Similar functionality with additional USB On-The-Go (OTG) support.
2. MCP73213: Higher charging current range (up to 1A) with similar features.
3. MCP73223: Dual-channel version for charging multiple batteries simultaneously.

These alternative models offer similar functionality and can be considered as alternatives to the MCP73123-22SI/MF depending on specific requirements and application needs.

In conclusion, the MCP73123-22SI/MF is a highly efficient and reliable integrated circuit designed for battery charging applications. Its compact package, advanced charging algorithms, and temperature monitoring features make it suitable for various electronic devices. While it has some limitations in terms of charging current range and external programming requirements, there are alternative models available to cater to different needs.