LT3651IUHE-8.4

Product Overview

Category

LT3651IUHE-8.4 belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for battery charging applications, providing efficient and reliable charging solutions for various electronic devices.

Characteristics

• High efficiency: The LT3651IUHE-8.4 offers high charging efficiency, minimizing energy loss during the charging process.
• Wide input voltage range: It can accept a wide range of input voltages, making it suitable for diverse power sources.
• Fast charging capability: This IC supports fast charging, reducing the charging time for batteries.
• Thermal regulation: It incorporates thermal regulation features to prevent overheating during operation.

Package

The LT3651IUHE-8.4 is available in a compact and industry-standard 16-pin QFN package, ensuring ease of integration into different electronic systems.

Essence

The essence of LT3651IUHE-8.4 lies in its ability to efficiently charge batteries while offering flexibility and reliability in various applications.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4V to 32V
• Charging Current: Up to 2A
• Output Voltage: 8.4V
• Operating Temperature Range: -40°C to 85°C
• Package Type: 16-Pin QFN

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VFB: Feedback voltage pin
4. ISET: Charging current set pin
5. STAT: Status indicator pin
6. EN: Enable pin
7. TS: Thermal shutdown pin
8. PROG: Programming pin
9. VOUT: Output voltage pin
10. BAT: Battery connection pin
11. ILIM: Current limit pin
12. PGND: Power ground pin
13. SDA: I2C data pin
14. SCL: I2C clock pin
15. INTVCC: Internal voltage reference pin
16. NC: No connection pin

Functional Features

• Constant current/constant voltage (CC/CV) charging algorithm
• Programmable charging current and voltage
• Thermal regulation for temperature control
• Charge termination based on battery voltage and current thresholds
• Fault protection features, including overvoltage and overcurrent protection

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced energy loss.
• Wide input voltage range allows compatibility with various power sources.
• Fast charging capability reduces charging time.
• Compact package facilitates integration into different systems.

Disadvantages

• Limited output voltage options (specifically designed for 8.4V).
• Requires external components for complete charging circuit implementation.

Working Principles

The LT3651IUHE-8.4 operates based on a CC/CV charging algorithm. It regulates the charging current and voltage to ensure optimal charging of batteries. The IC monitors the battery voltage and current, adjusting the charging parameters accordingly. It terminates the charging process when the battery reaches the desired voltage or when certain fault conditions are detected.

Detailed Application Field Plans

The LT3651IUHE-8.4 finds applications in various fields, including: - Portable electronic devices - Wireless communication devices - Industrial equipment - Automotive systems - Renewable energy systems

Its versatility and efficient charging capabilities make it suitable for a wide range of battery-powered applications.

Detailed and Complete Alternative Models

• LT3651IUHE-5: Similar to LT3651IUHE-8.4, but with an output voltage of 5V.
• LT3651IUHE-12: Similar to LT3651IUHE-8.4, but with an output voltage of 12V.
• LT3651IUHE-ADJ: Adjustable output voltage version, allowing customization of the output voltage within a specified range.

These alternative models provide flexibility in meeting different voltage requirements for battery charging applications.

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