MCP73831T-4ADI/OT

Introduction

The MCP73831T-4ADI/OT is a specialized integrated circuit (IC) designed for battery charging applications. This article 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.

Basic Information Overview

• Category: Battery Charging IC
• Use: The MCP73831T-4ADI/OT is used for charging single-cell lithium-ion/polymer batteries in various portable and handheld devices.
• Characteristics: It features constant current and constant voltage charging modes, thermal regulation, and under-voltage lockout protection.
• Package: 5-Pin SOT-23 Package
• Essence: Efficient and compact battery charging solution
• Packaging/Quantity: Available in tape and reel packaging with quantities specified by the manufacturer.

Specifications

The MCP73831T-4ADI/OT has the following key specifications: - Input Voltage Range: 3.75V to 6V - Charge Current: Programmable up to 500mA - Preconditioning Current: 10% of the programmed maximum charge current - Termination Current: 5% of the programmed maximum charge current - Ambient Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The MCP73831T-4ADI/OT features the following pin configuration: 1. VSS (Ground) 2. PROG (Charge Current Programming) 3. STAT (Charge Status Output) 4. VBAT (Battery Connection) 5. VDD (Input Power)

Functional Features

The functional features of the MCP73831T-4ADI/OT include: - Constant Current/Constant Voltage Operation - Thermal Regulation - Under-Voltage Lockout Protection - Charge Status Output

Advantages and Disadvantages

Advantages

• Compact SOT-23 Package
• Programmable Charge Current
• Integrated Thermal Regulation
• Low External Component Count

Disadvantages

• Limited to Single-Cell Battery Charging
• Restricted Maximum Charge Current

Working Principles

The MCP73831T-4ADI/OT operates by regulating the charge current and voltage to the connected lithium-ion/polymer battery. It transitions between constant current and constant voltage modes to ensure efficient and safe charging.

Detailed Application Field Plans

The MCP73831T-4ADI/OT is suitable for a wide range of portable and handheld devices, including: - Smartphones - Tablets - Portable Media Players - Bluetooth Headsets - Portable Gaming Devices

Detailed and Complete Alternative Models

Some alternative models to the MCP73831T-4ADI/OT include: - MCP73832: Similar functionality with different pin configuration - MAX1555: Standalone lithium-ion battery charger IC - BQ24074: Integrated single-cell Li-Ion charger with power path management

In conclusion, the MCP73831T-4ADI/OT is a versatile and efficient battery charging IC suitable for various portable and handheld devices. Its compact package, programmable charge current, and integrated features make it an ideal choice for designers seeking a reliable charging solution for single-cell lithium-ion/polymer batteries.

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