MCP73833-AMI/UN

Introduction

The MCP73833-AMI/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 MCP73833-AMI/UN is used for charging single-cell lithium-ion or lithium-polymer batteries in various portable and handheld devices.
• Characteristics: It offers a compact and efficient solution for battery charging, with built-in safety features and programmable charge rates.
• Package: The MCP73833-AMI/UN is available in a small 8-pin MSOP package, making it suitable for space-constrained designs.
• Essence: The essence of this product lies in its ability to provide reliable and safe charging for lithium-ion and lithium-polymer batteries.
• Packaging/Quantity: The MCP73833-AMI/UN is typically available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Input Voltage: 4.5V to 6.0V
• Charge Current: Programmable up to 1A
• Preconditioning Current: 10% of programmed current
• Termination Current: 5% of programmed current
• Ambient Temperature Range: -40°C to 85°C
• Charge Voltage: 4.2V
• Charge Accuracy: ±0.7%
• Thermal Regulation: ±1.5%

Detailed Pin Configuration

The MCP73833-AMI/UN features the following pin configuration: 1. VSS (Ground) 2. PROG (Charge Current Programming) 3. STAT (Charge Status Output) 4. PG (Power Good Output) 5. CE (Charge Enable Input) 6. TS (Thermal Sense Input) 7. VBAT (Battery Connection) 8. VDD (Input Supply Voltage)

Functional Features

• Programmable Charge Current: Users can set the charge current according to the requirements of the battery being charged.
• Charge Status Output: The STAT pin provides information about the charging status, allowing for easy integration with system monitoring.
• Power Good Output: The PG pin indicates when the input supply voltage is within the acceptable range for charging.
• Thermal Regulation: The IC incorporates thermal regulation to ensure safe operation across a wide temperature range.

Advantages and Disadvantages

Advantages

• Compact form factor
• Programmable charge current
• Integrated safety features
• Wide ambient temperature range

Disadvantages

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

Working Principles

The MCP73833-AMI/UN operates by regulating the charge current and voltage to the connected battery. It utilizes a constant current/constant voltage charging algorithm to ensure optimal and safe charging of lithium-ion and lithium-polymer batteries.

Detailed Application Field Plans

The MCP73833-AMI/UN is well-suited for a wide range of portable and handheld devices, including: - Smartphones and tablets - Portable media players - Handheld gaming devices - Portable medical devices - Wearable electronics

Detailed and Complete Alternative Models

• MCP73831: Similar functionality with a different package and pin configuration
• MCP73837: Higher charge current capability for faster charging applications
• MCP73871: Enhanced features for advanced battery management applications

In conclusion, the MCP73833-AMI/UN offers a reliable and efficient solution for charging single-cell lithium-ion and lithium-polymer batteries in portable and handheld devices. Its compact form factor, programmable charge current, and integrated safety features make it a popular choice for designers seeking a robust charging solution.

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