MCP73833-CNI/UN

Introduction

The MCP73833-CNI/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, 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 MCP73833-CNI/UN is used for charging single-cell lithium-ion or lithium-polymer batteries.
• Characteristics: It features constant current and constant voltage charging modes, thermal regulation, and charge status indication.
• Package: 10-Lead, 3x3 mm DFN package
• Essence: Efficient and compact battery charging solution
• 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 1A
• Preconditioning Current: 10% of programmed maximum charge current
• Termination Current: 5% of programmed maximum charge current
• Charge Voltage: 4.2V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73833-CNI/UN features the following pin configuration: 1. VSS (Ground) 2. PROG (Charge Current Programming Pin) 3. STAT (Charge Status Output) 4. CE (Charge Enable Input) 5. TS (Thermal Regulation Input) 6. VBAT (Battery Connection) 7. VDD (Input Supply Voltage) 8. DP, DM (USB D+ and D- Data Lines)

Functional Features

• Constant Current/Constant Voltage Charging: Ensures efficient and safe charging of lithium-ion/polymer batteries.
• Thermal Regulation: Protects the device and battery from overheating during charging.
• Charge Status Indication: Provides visual indication of the charging process.

Advantages and Disadvantages

Advantages

• Compact and space-saving DFN package
• Programmable charge current for flexibility
• Integrated thermal regulation for safety

Disadvantages

• Limited to single-cell battery charging
• Requires external components for complete charging system

Working Principles

The MCP73833-CNI/UN operates by regulating the charge current and voltage to the connected lithium-ion or lithium-polymer battery. It starts with a constant current mode until the battery reaches a preset voltage, after which it switches to constant voltage mode until the charge current drops below a specified level.

Detailed Application Field Plans

The MCP73833-CNI/UN is suitable for various portable electronic devices powered by lithium-ion or lithium-polymer batteries, including smartphones, tablets, portable media players, and handheld gaming devices. It can also be utilized in battery-powered IoT devices and wearable electronics.

Detailed and Complete Alternative Models

• MCP73831: Similar functionality with different package options
• MCP73837: Enhanced features such as input voltage regulation and charge termination timer
• BQ24075: Alternative IC from Texas Instruments with comparable specifications

In conclusion, the MCP73833-CNI/UN is a versatile and efficient battery charging IC suitable for a wide range of portable electronic devices. Its compact package, programmable features, and integrated thermal regulation make it a popular choice for designers seeking reliable battery charging solutions.

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