MCP73834T-FCI/UN

Introduction

The MCP73834T-FCI/UN 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, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Battery Charging IC
• Use: The MCP73834T-FCI/UN is used for managing and controlling the charging of single-cell lithium-ion or lithium-polymer batteries.
• Characteristics: It features constant current and constant voltage charging modes, thermal regulation, charge status indicators, and safety features to protect the battery.
• Package: The MCP73834T-FCI/UN is available in a 20-pin QFN package.
• Essence: Its essence lies in providing a reliable and efficient solution for charging lithium-ion and lithium-polymer batteries.
• Packaging/Quantity: The product is typically supplied in reels with a specific quantity per reel.

Specifications

The MCP73834T-FCI/UN offers the following key specifications: - Input Voltage Range: 3.75V to 6V - Maximum Charge Current: 1A - Preconditioning Current: 10% of the programmed maximum charge current - Termination Current: 5% of the programmed maximum charge current - Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The MCP73834T-FCI/UN features a 20-pin QFN package with specific pin assignments for input power, battery connections, status indicators, and control signals. A detailed pinout diagram can be found in the product datasheet.

Functional Features

• Constant Current/Constant Voltage Charging
• Thermal Regulation and Protection
• Charge Status Indicators
• Under-Voltage Lockout
• Automatic Recharge

Advantages and Disadvantages

Advantages

• Efficient charging algorithm
• Integrated safety features
• Compact package size
• Wide input voltage range

Disadvantages

• Limited to single-cell battery charging
• May require external components for specific applications

Working Principles

The MCP73834T-FCI/UN operates by regulating the charging current and voltage to ensure safe and efficient charging of lithium-ion and lithium-polymer batteries. It utilizes a combination of constant current and constant voltage modes to achieve optimal charging performance while monitoring temperature and battery status to prevent overcharging or overheating.

Detailed Application Field Plans

The MCP73834T-FCI/UN is well-suited for various portable electronic devices, including smartphones, tablets, digital cameras, and portable medical devices. It can also be integrated into power banks, handheld gaming consoles, and other battery-powered consumer electronics.

Detailed and Complete Alternative Models

• MCP73833: Similar functionality with a different package and pin configuration
• BQ24074: Texas Instruments' equivalent offering with comparable features
• MAX1555: Maxim Integrated's alternative for single-cell battery charging applications

In conclusion, the MCP73834T-FCI/UN serves as a reliable and efficient solution for charging single-cell lithium-ion and lithium-polymer batteries, offering a comprehensive set of features and specifications suitable for a wide range of portable electronic devices.

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