LT3650EMSE-8.4#PBF

Product Overview

Category

The LT3650EMSE-8.4#PBF belongs to the category of integrated circuits (ICs) and is specifically designed for battery charging applications.

Use

This product is commonly used in various electronic devices that require efficient and reliable battery charging capabilities.

Characteristics

• High efficiency: The LT3650EMSE-8.4#PBF is known for its high charging efficiency, ensuring optimal use of power.
• Wide input voltage range: It can accept a wide range of input voltages, making it suitable for different power sources.
• Fast charging: This IC supports fast charging, reducing the overall charging time for batteries.
• Thermal protection: It incorporates thermal protection mechanisms to prevent overheating during operation.

Package

The LT3650EMSE-8.4#PBF is available in a small MSOP-10 package, which provides compactness and ease of integration into various electronic systems.

Essence

The essence of this product lies in its ability to efficiently charge batteries while providing necessary protection features.

Packaging/Quantity

The LT3650EMSE-8.4#PBF is typically supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4V to 32V
• Output Voltage: 8.4V
• Charging Current: Up to 2A
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Protection Features: Overvoltage protection, overcurrent protection, thermal shutdown

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. PROG: Programming pin for setting charging current
4. STAT: Status indicator pin
5. EN: Enable pin for enabling/disabling charging
6. VFB: Feedback voltage pin for regulation
7. BAT: Battery connection pin
8. ISET: Current limit setting pin
9. TS: Thermal shutdown pin
10. VOUT: Output voltage pin

Functional Features

• Constant current/constant voltage (CC/CV) charging algorithm
• Automatic battery detection and charging initiation
• LED status indication for charging progress
• Programmable charging current through external resistor
• Soft-start feature to minimize inrush current
• Reverse battery protection

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal use of power.
• Wide input voltage range allows compatibility with various power sources.
• Fast charging capability reduces overall charging time.
• Thermal protection prevents overheating, ensuring safe operation.

Disadvantages

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

Working Principles

The LT3650EMSE-8.4#PBF operates based on a CC/CV charging algorithm. It starts by detecting the presence of a battery connected to the BAT pin. Once detected, it initiates the charging process by providing a constant current to the battery until its voltage reaches the programmed threshold. At this point, the IC switches to a constant voltage mode, maintaining a steady voltage across the battery terminals while reducing the charging current gradually. This ensures a complete and safe charging process.

Detailed Application Field Plans

The LT3650EMSE-8.4#PBF finds applications in various fields, including: 1. Portable electronic devices: Used for charging batteries in smartphones, tablets, portable speakers, etc. 2. Industrial equipment: Provides efficient battery charging for handheld tools, wireless sensors, and other battery-powered devices. 3. Automotive electronics: Enables reliable battery charging in electric vehicles, hybrid vehicles, and other automotive applications. 4. Renewable energy systems: Used for charging batteries in solar-powered systems, wind turbines, and other renewable energy setups.

Detailed and Complete Alternative Models

1. LT3650EMSE-8#PBF: Similar to LT3650EMSE-8.4#PBF but designed for 8V output voltage.
2. LT3650EMSE-12#PBF: Designed for 12V output voltage applications.
3. LT3650EMSE-5#PBF: Suitable for 5V output voltage requirements.

These alternative models provide similar functionality with different output voltage options, catering to various application needs.

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