MCP73831T-2DCI/OT

Introduction

The MCP73831T-2DCI/OT 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.

Basic Information Overview

• Category: Battery Charging IC
• Use: The MCP73831T-2DCI/OT is used for charging single-cell lithium-ion/lithium-polymer batteries in a wide range of portable applications.
• Characteristics: It offers a compact solution with high accuracy, automatic charge termination, and numerous safety features.
• 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: 4.5V to 6.0V
• Charge Current: Programmable up to 500mA
• Preconditioning Current: 10% of the programmed constant current value
• Termination Current: 5% of the programmed constant current value
• Ambient Temperature Range: -40°C to +85°C
• Battery Voltage Range: 3.4V to 4.2V

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 Charge Termination: Prevents overcharging and ensures battery safety.
• Thermal Regulation: Limits the die temperature during high power operation or high ambient temperature conditions.
• Charge Status Output: Provides indication of the battery's charge state.
• Under-Voltage Lockout: Disables the charger when the input voltage falls below a safe operating level.

Advantages and Disadvantages

Advantages

• Compact and space-saving SOT-23 package
• High accuracy and reliability
• Automatic charge termination for enhanced safety
• Wide ambient temperature range for versatile applications

Disadvantages

• Limited to single-cell lithium-ion/lithium-polymer battery charging
• Requires external components for complete charging system implementation

Working Principles

The MCP73831T-2DCI/OT operates by regulating the charge current and voltage to the connected lithium-ion/lithium-polymer battery. It utilizes a precise control algorithm to ensure efficient and safe charging while monitoring the battery status through the STAT pin.

Detailed Application Field Plans

The MCP73831T-2DCI/OT is well-suited for various portable electronic devices such as smartphones, tablets, portable media players, and handheld medical devices. Its compact form factor and reliable performance make it an ideal choice for applications requiring single-cell lithium-ion/lithium-polymer battery charging.

Detailed and Complete Alternative Models

• MCP73830: Similar functionality with different charge current options
• MCP73832: Enhanced features for more advanced battery charging requirements
• BQ24075: Texas Instruments' alternative with comparable specifications

In conclusion, the MCP73831T-2DCI/OT is a highly efficient and reliable battery charging IC suitable for a wide range of portable applications. Its compact design, precise control, and safety features make it a preferred choice for designers seeking a dependable solution for single-cell lithium-ion/lithium-polymer battery charging.

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