LT3650IDD-4.2#PBF

Product Overview

Category

The LT3650IDD-4.2#PBF belongs to the category of integrated circuits (ICs) used in power management.

Use

This IC is specifically designed for battery charging applications, providing a reliable and efficient solution for charging lithium-ion batteries.

Characteristics

• High efficiency: The LT3650IDD-4.2#PBF offers high charging efficiency, minimizing energy loss during the charging process.
• Fast charging: It supports fast charging capabilities, reducing the overall charging time for lithium-ion batteries.
• Wide input voltage range: The IC can operate with input voltages ranging from 4.95V to 32V, making it suitable for various power sources.
• Adjustable output voltage: It allows for adjustable output voltage settings, enabling compatibility with different battery types and charging requirements.

Package

The LT3650IDD-4.2#PBF comes in a small and compact DFN (Dual Flat No-Lead) package, which ensures easy integration into electronic devices and provides thermal efficiency.

Essence

The essence of the LT3650IDD-4.2#PBF lies in its ability to efficiently charge lithium-ion batteries while offering flexibility in terms of input voltage and output voltage settings.

Packaging/Quantity

This IC is typically sold in reels or tubes, containing a specific quantity per package. Please refer to the manufacturer's specifications for detailed packaging and quantity information.

Specifications

• Input Voltage Range: 4.95V to 32V
• Output Voltage Range: 3.5V to 4.2V (adjustable)
• Charging Current: Up to 2A
• Operating Temperature Range: -40°C to 85°C
• Package Type: DFN

Detailed Pin Configuration

The LT3650IDD-4.2#PBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Programming pin for setting the output voltage
4. STAT: Status indicator pin
5. BAT: Battery connection pin

Functional Features

• Constant current/constant voltage charging: The IC provides a controlled charging process, maintaining a constant current until the battery reaches a specific voltage, and then switches to constant voltage mode.
• Thermal regulation: It incorporates thermal regulation to prevent overheating during the charging process, ensuring safe operation.
• Charge termination: The LT3650IDD-4.2#PBF automatically terminates the charging process when the battery is fully charged, preventing overcharging and potential damage to the battery.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Fast charging capabilities
• Wide input voltage range
• Adjustable output voltage settings
• Compact package size

Disadvantages

• Limited to lithium-ion battery charging applications
• Requires proper programming for desired output voltage

Working Principles

The LT3650IDD-4.2#PBF operates based on a switching regulator topology. It utilizes a combination of constant current and constant voltage charging techniques to efficiently charge lithium-ion batteries. The IC regulates the charging current and voltage levels according to the programmed settings, ensuring optimal charging performance while protecting the battery from overcharging or overheating.

Detailed Application Field Plans

The LT3650IDD-4.2#PBF finds extensive use in various portable electronic devices, such as smartphones, tablets, digital cameras, and portable power banks. It is also suitable for industrial applications where reliable and efficient battery charging is required, such as in wireless sensor networks, IoT devices, and medical equipment.

Detailed and Complete Alternative Models

• LT3650IDD-4.1#PBF: Similar to LT3650IDD-4.2#PBF, but with an adjustable output voltage range of 3.5V to 4.1V.
• LT3650IDD-4.3#PBF: Similar to LT3650IDD-4.2#PBF, but with an adjustable output voltage range of 3.5V to 4.3V.
• LT3650IDD-4.4#PBF: Similar to LT3650IDD-4.2#PBF, but with an adjustable output voltage range of 3.5V to 4.4V.

These alternative models provide flexibility in output voltage settings to cater to different battery charging requirements.

In conclusion, the LT3650IDD-4.2#PBF is a highly efficient and versatile integrated circuit designed for charging lithium-ion batteries. With its wide input voltage range, adjustable output voltage settings, and compact package size, it offers a reliable solution for various battery charging applications in both consumer and industrial electronics.