LT3651EUHE-8.4#TRPBF

Product Overview

Category

The LT3651EUHE-8.4#TRPBF belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging lithium-ion batteries in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• Input Voltage Range: 4V to 32V
• Output Voltage: 8.4V
• Charging Current: Up to 2A
• Package Type: 36-Lead 5mm × 6mm QFN
• Essence: High-efficiency battery charger IC with advanced features
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel

Specifications

The LT3651EUHE-8.4#TRPBF has the following specifications:

• Input Voltage Range: 4V to 32V
• Output Voltage: 8.4V
• Maximum Charging Current: 2A
• Charge Termination: Programmable charge current termination
• Battery Temperature Monitoring: Integrated temperature sensor for thermal regulation
• Efficiency: Up to 94%
• Operating Temperature Range: -40°C to 85°C
• Package Type: 36-Lead 5mm × 6mm QFN

Detailed Pin Configuration

The LT3651EUHE-8.4#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Programming pin for setting the charge current termination
4. STAT: Status output pin indicating charging status
5. TS: Temperature sense pin for battery temperature monitoring
6. BAT: Battery connection pin
7. ISET: Current sense pin for setting the charging current
8. VOUT: Output voltage pin

Functional Features

The LT3651EUHE-8.4#TRPBF offers the following functional features:

1. High Efficiency: The IC provides up to 94% efficiency, ensuring efficient battery charging and minimizing power loss.
2. Programmable Charge Termination: The charge termination can be programmed using the PROG pin, allowing flexibility in setting the desired charge current termination.
3. Battery Temperature Monitoring: Integrated temperature sensing enables thermal regulation during charging, preventing overheating and ensuring safe operation.
4. Status Output: The STAT pin provides a status output indicating the charging status, allowing easy monitoring of the charging process.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High efficiency minimizes power loss during charging.
• Programmable charge termination provides flexibility in charging current settings.
• Integrated temperature sensor ensures safe charging by monitoring battery temperature.
• Status output pin facilitates easy monitoring of the charging process.

Disadvantages

• Limited to lithium-ion battery charging applications.
• Requires additional external components for complete battery charging circuit implementation.

Working Principles

The LT3651EUHE-8.4#TRPBF operates based on a switching regulator architecture. It utilizes a high-efficiency power conversion technique to convert the input voltage to the desired output voltage for charging the lithium-ion battery. The charge termination can be programmed using the PROG pin, allowing customization of the charging current termination. The integrated temperature sensor monitors the battery temperature, ensuring safe charging by regulating the charging process based on temperature conditions.

Detailed Application Field Plans

The LT3651EUHE-8.4#TRPBF is widely used in various portable electronic devices that require lithium-ion battery charging. Some specific application fields include:

1. Smartphones: The IC is commonly used in smartphones to provide efficient and safe charging for the built-in lithium-ion batteries.
2. Tablets: Tablets rely on the LT3651EUHE-8.4#TRPBF for reliable and optimized charging of their lithium-ion battery packs.
3. Portable Media Players: The IC ensures efficient charging for portable media players, enabling extended playback time.
4. Wearable Devices: The LT3651EUHE-8.4#TRPBF is suitable for wearable devices such as smartwatches and fitness trackers, ensuring convenient and safe battery charging.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LT3651EUHE-8.4#TRPBF include:

1. MCP73831: A compact and cost-effective lithium-ion battery charger IC with programmable charge termination and thermal regulation features.
2. BQ24075: An integrated circuit designed for single-cell lithium-ion or lithium-polymer battery charging applications, offering high efficiency and programmable charge termination.
3. MAX1555: A highly integrated lithium-ion battery charger IC with a wide input voltage range and programmable charge termination, suitable for various