MCP73837-NVI/MF

Introduction

The MCP73837-NVI/MF 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.

Product Overview

• Category: Battery Charging IC
• Use: The MCP73837-NVI/MF is used for charging single-cell lithium-ion or lithium-polymer batteries in various portable devices such as smartphones, tablets, and portable electronic gadgets.
• Characteristics: This IC offers high accuracy, safety, and reliability in charging lithium-ion or lithium-polymer batteries. It is designed to provide efficient and controlled charging while ensuring the longevity of the battery.
• Package: The MCP73837-NVI/MF is available in a compact and industry-standard 8-pin MSOP package, making it suitable for space-constrained applications.
• Essence: The essence of this product lies in its ability to provide a reliable and efficient charging solution for lithium-ion and lithium-polymer batteries, ensuring optimal performance and safety.
• Packaging/Quantity: The MCP73837-NVI/MF is typically supplied in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Input Voltage: 4.5V to 6.0V
• Charge Current: Programmable up to 1A
• Termination: Automatic charge termination
• Temperature Range: -40°C to +85°C
• Charge Voltage: Programmable up to 4.2V
• Charge Accuracy: ±0.7%
• Preconditioning: Trickle charge current for deeply discharged cells
• Safety Features: Thermal regulation and thermal shutdown

Detailed Pin Configuration

The MCP73837-NVI/MF features the following pin configuration: 1. VSS (Ground) 2. PROG (Charge Current Programming) 3. STAT (Charge Status Output) 4. CE (Charge Enable) 5. TS (Thermal Sense) 6. VDD (Input Supply) 7. VBAT (Battery Connection) 8. VSS (Ground)

Functional Features

• Charge Status Output (STAT): Provides indication of the battery's charging status.
• Programmable Charge Current (PROG): Allows flexibility in setting the charge current based on the battery's requirements.
• Thermal Regulation: Ensures safe operation by regulating the charging process based on temperature conditions.
• Automatic Charge Termination: Prevents overcharging and ensures the longevity of the battery.

Advantages and Disadvantages

Advantages

• High charge accuracy
• Compact package size
• Flexible charge current programming
• Automatic charge termination for safety
• Wide input voltage range

Disadvantages

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

Working Principles

The MCP73837-NVI/MF operates by regulating the charge current and voltage to the connected lithium-ion or lithium-polymer battery. It utilizes feedback mechanisms to monitor the battery's status and adjust the charging parameters accordingly. The IC also incorporates safety features such as thermal regulation and automatic charge termination to ensure safe and efficient charging.

Detailed Application Field Plans

The MCP73837-NVI/MF is well-suited for a wide range of portable electronic devices, including but not limited to: - Smartphones - Tablets - Portable media players - Handheld gaming devices - Portable medical devices

Detailed and Complete Alternative Models

• MCP73831: Single-cell Li-Ion/Li-Polymer Charge Management Controller with USB/AC/DC Inputs
• MCP73832: Stand-Alone Linear Li-Ion/Li-Polymer Charge Management Controller
• MCP73833: Fully Integrated Linear Solution for System Load Sharing and Li-Ion/Li-Polymer Charge Management with Thermal Regulation

In conclusion, the MCP73837-NVI/MF serves as a reliable and efficient solution for charging single-cell lithium-ion or lithium-polymer batteries in portable electronic devices. Its high accuracy, safety features, and compact package make it a preferred choice for designers seeking optimal battery charging solutions.

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