MCP73843T-420I/MS

Introduction

The MCP73843T-420I/MS is a specialized integrated circuit (IC) belonging to the category of battery management devices. This IC is designed to efficiently manage and charge single-cell lithium-ion or lithium-polymer batteries, making it an essential component in various portable electronic devices.

Basic Information Overview

• Category: Battery Management IC
• Use: Charging and managing single-cell lithium-ion or lithium-polymer batteries
• Characteristics: High efficiency, compact size, and versatile applications
• Package: MSOP-10
• Essence: Efficient battery charging and management
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage: 4.5V to 6.0V
• Charge Current: Programmable up to 1A
• Termination Current: 10% of the programmed charge current
• Preconditioning Current: 10% of the programmed charge current
• Charge Voltage: 4.2V
• Ambient Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73843T-420I/MS features a total of 10 pins, each serving a specific function in the charging and management process. The detailed pin configuration includes input voltage, charge current setting, temperature monitoring, and battery connections.

Functional Features

• Integrated pass transistor and reverse discharge protection
• Automatic recharging and pre-conditioning
• Thermal regulation and thermal shutdown for safety
• Status indication through LED outputs

Advantages and Disadvantages

Advantages

• Compact package size for space-constrained designs
• Programmable charge current for flexibility
• Comprehensive safety features for reliable battery management

Disadvantages

• Limited to single-cell battery management
• Requires external components for full functionality

Working Principles

The MCP73843T-420I/MS operates by regulating the charge current and voltage to ensure safe and efficient charging of lithium-ion or lithium-polymer batteries. It incorporates thermal regulation and safety features to protect the battery and the surrounding circuitry.

Detailed Application Field Plans

This IC finds extensive application in various portable electronic devices, including smartphones, tablets, portable medical devices, and handheld consumer electronics. Its ability to efficiently manage and charge single-cell batteries makes it suitable for a wide range of battery-powered products.

Detailed and Complete Alternative Models

• MCP73831: Single-cell Li-Ion/Li-Polymer Charge Management Controller
• MCP73837: Stand-Alone Linear Li-Ion/Li-Polymer Charge Management Controller
• MCP73871: Dual Input, Linear, 1A, Li-Ion/Li-Polymer Battery Charger

In conclusion, the MCP73843T-420I/MS is a versatile and efficient battery management IC with a compact form factor and comprehensive safety features. Its programmable charge current and thermal regulation make it suitable for a wide range of portable electronic devices, ensuring reliable and safe battery charging and management.

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