LT3650EMSE-4.2#PBF

Product Overview

Category

The LT3650EMSE-4.2#PBF 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 LT3650EMSE-4.2#PBF offers several key characteristics that make it suitable for battery charging purposes. It features a high efficiency switching regulator, which ensures optimal power conversion and minimizes energy loss. Additionally, it incorporates a precision voltage reference and current sense amplifier, enabling accurate control of the charging process. The device also includes various protection features such as thermal shutdown, reverse battery protection, and overvoltage protection.

Package

The LT3650EMSE-4.2#PBF comes in a small MSOP-10 package, which provides compactness and ease of integration into different electronic systems.

Essence

The essence of this product lies in its ability to efficiently charge lithium-ion batteries while ensuring safety and reliability through its built-in protection mechanisms.

Packaging/Quantity

The LT3650EMSE-4.2#PBF is typically supplied in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 4.95V to 32V
• Charge Current Range: Up to 2A
• Float Voltage: 4.2V
• Charge Termination: C/10
• Efficiency: Up to 94%
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Charge current programming pin
4. STAT: Status indicator pin
5. FLT: Fault indicator pin
6. VFB: Feedback voltage pin
7. BAT: Battery connection pin
8. TIMER: Timer programming pin
9. SS: Soft-start capacitor pin
10. LX: Switching node 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 avoid damage from reverse polarity connection
• Overvoltage protection to safeguard the battery and connected devices

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced energy consumption
• Accurate control of charging process ensures optimal battery performance
• Built-in protection mechanisms enhance safety and reliability
• Compact package allows for easy integration into various applications

Disadvantages

• Limited charge current range may not be suitable for high-power battery charging requirements
• Requires external components for complete charging circuit implementation

Working Principles

The LT3650EMSE-4.2#PBF operates as a switching regulator, converting the input voltage to a regulated output voltage suitable for charging lithium-ion batteries. It utilizes a feedback loop to monitor the battery voltage and adjust the charging current accordingly. The device employs a pulse width modulation (PWM) technique to regulate the charging process efficiently.

Detailed Application Field Plans

The LT3650EMSE-4.2#PBF finds application in various fields where lithium-ion battery charging is required. Some potential application areas include:

1. Portable electronic devices such as smartphones, tablets, and laptops
2. Electric vehicles and hybrid electric vehicles
3. Power banks and portable chargers
4. Industrial equipment and machinery
5. Renewable energy systems

Detailed and Complete Alternative Models

1. LT3650EMSE-4.1#PBF: Similar to LT3650EMSE-4.2#PBF, but with a float voltage of 4.1V.
2. LT3650EMSE-4.3#PBF: Similar to LT3650EMSE-4.2#PBF, but with a float voltage of 4.3V.
3. LT3650EMSE-4.2I#PBF: Industrial grade version of LT3650EMSE-4.2#PBF, suitable for harsh operating conditions.

These alternative models offer similar functionality and characteristics, providing flexibility in choosing the most appropriate option for specific applications.

In conclusion, the LT3650EMSE-4.2#PBF is a power management IC 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 battery charging applications. However, it has limitations in terms of charge current range and requires external components for complete circuit implementation. The product finds application in various fields, and alternative models provide additional options to suit different requirements.