MCP73831T-4ADI/MC

Introduction

The MCP73831T-4ADI/MC is a specialized integrated circuit (IC) designed for battery charging applications. This entry provides an overview of the product, including its category, use, characteristics, package, essence, packaging/quantity, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Product Overview

• Category: Battery Charging IC
• Use: The MCP73831T-4ADI/MC is used for charging single-cell lithium-ion/polymer batteries in various portable and handheld devices.
• Characteristics: This IC offers high accuracy, small footprint, and low-cost solutions for battery charging applications.
• Package: 5-Pin SOT-23 Package
• Essence: Efficient and reliable battery charging management
• Packaging/Quantity: Available in tape and reel packaging with quantities varying based on supplier and order size.

Specifications

• Input Voltage: 3.75V to 6V
• Charge Current: Programmable up to 500mA
• Preconditioning:
  • Trickle Charge Current: 10% of programmed maximum charge current
  • Preconditioning Timer: 64 minutes
• Termination:
  • Charge Termination Threshold: 5% of programmed maximum charge current
  • Charge Termination Timer: 8 hours
• Temperature Range: -40°C to +85°C
• Battery Voltage Range: 2.7V to 6V
• Charge Voltage: 4.20V

Detailed Pin Configuration

1. VSS (Ground)
2. PROG (Charge Current Programming Input)
3. STAT (Charge Status Output)
4. VBAT (Battery Connection)
5. VDD (Input Supply Voltage)

Functional Features

• Automatic Recharge: The MCP73831T-4ADI/MC automatically restarts the charge cycle if the battery voltage falls below an internal threshold.
• Charge Status Indicator: The STAT pin provides information about the charging status, allowing for easy integration with external systems.
• Thermal Regulation: The IC includes thermal regulation to protect the device during high-temperature conditions.

Advantages and Disadvantages

Advantages

• Small form factor
• High accuracy
• Low cost
• Integrated thermal regulation

Disadvantages

• Limited to single-cell battery charging
• Maximum charge current limited to 500mA

Working Principles

The MCP73831T-4ADI/MC utilizes constant current/constant voltage (CC/CV) charging algorithms to efficiently and safely charge lithium-ion/polymer batteries. It regulates the charge current and voltage to ensure optimal charging without overcharging or damaging the battery.

Detailed Application Field Plans

The MCP73831T-4ADI/MC is suitable for a wide range of portable and handheld devices, including: - Smartphones - Tablets - Portable media players - Bluetooth headsets - Portable medical devices - GPS devices

Detailed and Complete Alternative Models

• MCP73830: Similar functionality with a different package (DFN)
• MCP73832: Higher charge current capability (1A) with similar features
• MCP73837: Integrated USB compatibility for charging applications

In conclusion, the MCP73831T-4ADI/MC is a versatile and efficient battery charging IC suitable for various portable and handheld devices. Its compact design, high accuracy, and integrated features make it a popular choice for designers seeking reliable charging solutions.

[Word Count: 536]