LT3650IDD-4.1#TRPBF

Product Overview

Category

The LT3650IDD-4.1#TRPBF 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 a reliable and efficient solution for charging lithium-ion batteries.

Characteristics

The LT3650IDD-4.1#TRPBF offers several key characteristics that make it suitable for battery charging purposes. It features a high efficiency switching regulator, which ensures optimal power conversion. Additionally, it incorporates a precision voltage reference and current sense amplifier, enabling accurate charging control. The device also includes various protection features such as thermal shutdown and reverse battery protection.

Package

The LT3650IDD-4.1#TRPBF comes in a small form factor package known as DFN (Dual Flat No-Lead). This package type provides excellent thermal performance and compactness, making it suitable for space-constrained applications.

Essence

The essence of the LT3650IDD-4.1#TRPBF lies in its ability to efficiently charge lithium-ion batteries while ensuring safety and reliability through its built-in protection mechanisms.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.95V to 32V
• Output Voltage: 4.1V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 94%
• Standby Current: <1µA

Detailed Pin Configuration

The LT3650IDD-4.1#TRPBF has the following pin configuration:

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

Functional Features

• High efficiency switching regulator for optimal power conversion
• Precision voltage reference and current sense amplifier for accurate charging control
• Thermal shutdown protection to prevent overheating
• Reverse battery protection to safeguard against incorrect battery connection
• Programmable charging current for flexibility in different applications
• Status indicator pin for monitoring the charging process

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power loss during charging
• Accurate charging control ensures optimal battery performance and longevity
• Compact DFN package allows for space-saving designs
• Built-in protection features enhance safety and reliability

Disadvantages

• Limited output voltage options (specifically designed for 4.1V)
• May require additional external components for certain applications

Working Principles

The LT3650IDD-4.1#TRPBF operates based on a switching regulator topology. It converts the input voltage to the desired output voltage using high-frequency switching techniques. The device regulates the charging current by monitoring the battery voltage and adjusting the duty cycle of the internal switch accordingly. This ensures that the battery is charged efficiently and within safe limits.

Detailed Application Field Plans

The LT3650IDD-4.1#TRPBF finds application in various fields, including but not limited to:

1. Portable electronic devices: Enables efficient and reliable charging for smartphones, tablets, and other portable gadgets.
2. Medical devices: Provides a stable charging solution for medical equipment powered by lithium-ion batteries.
3. Industrial equipment: Suitable for charging batteries used in industrial machinery and tools.
4. Automotive applications: Can be utilized for charging electric vehicle batteries or powering onboard electronics.

Detailed and Complete Alternative Models

1. LT3650IDD-4.2#TRPBF: Similar to LT3650IDD-4.1#TRPBF but with an output voltage of 4.2V.
2. LT3650IDD-3.7#TRPBF: Designed for charging lithium-ion batteries with an output voltage of 3.7V.
3. LT3650IDD-5#TRPBF: Offers an output voltage of 5V, suitable for specific applications requiring this voltage level.

These alternative models provide flexibility in choosing the appropriate output voltage for different battery charging requirements.

In conclusion, the LT3650IDD-4.1#TRPBF is a power management IC specifically designed for efficient and reliable charging of lithium-ion batteries. With its high efficiency, accurate control, and built-in protection features, it offers several advantages for various applications. While it has limited output voltage options, it can be complemented by alternative models to cater to different voltage requirements.