LT3650EDD-4.2#TRPBF

Product Overview

Category

The LT3650EDD-4.2#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 LT3650EDD-4.2#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 during the charging process. Additionally, it incorporates a precision voltage reference and current sense amplifier, enabling accurate control of the charging parameters. The device also includes various protection features such as thermal shutdown and reverse battery protection.

Package

The LT3650EDD-4.2#TRPBF comes in a small 10-lead DFN (Dual Flat No-Lead) package, which provides compactness and ease of integration into electronic systems.

Essence

The essence of the LT3650EDD-4.2#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 250 units per reel.

Specifications

• Input Voltage Range: 4V to 8V
• Charging Current: Up to 2A
• Charge Voltage: 4.2V
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Programming pin for setting the charging current
4. STAT: Status pin indicating charging status
5. FLT: Fault pin indicating any fault conditions
6. BAT: Battery connection pin
7. SS: Soft-start pin for controlling the charging current ramp-up
8. FB: Feedback pin for regulating the charge voltage
9. VCC: Supply voltage pin
10. PGND: Power ground pin

Functional Features

• High efficiency switching regulator for optimal power conversion
• Precision voltage reference and current sense amplifier for accurate control
• Thermal shutdown protection to prevent overheating
• Reverse battery protection to avoid damage from reverse polarity connection
• Programmable charging current for flexibility in different applications
• Status and fault pins for monitoring and diagnostics

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced power consumption
• Accurate control of charging parameters ensures optimal battery performance
• Built-in protection mechanisms enhance safety and reliability
• Programmable charging current allows customization for various battery types and capacities

Disadvantages

• Limited input voltage range may restrict compatibility with certain power sources
• Relatively small package size may require careful PCB layout considerations

Working Principles

The LT3650EDD-4.2#TRPBF operates by utilizing a high efficiency switching regulator to convert the input voltage into a regulated charging voltage suitable for lithium-ion batteries. The charging current is controlled through the programming pin (PROG), which sets the desired charging current based on the application requirements. The device continuously monitors the battery voltage and adjusts the charging parameters accordingly to ensure safe and efficient charging. Various protection features, such as thermal shutdown and reverse battery protection, are implemented to safeguard the battery and the charging circuitry.

Detailed Application Field Plans

The LT3650EDD-4.2#TRPBF finds extensive use in portable electronic devices, such as smartphones, tablets, and wearable devices, where lithium-ion batteries are commonly employed. It is also utilized in battery-powered industrial equipment, medical devices, and automotive applications. The ability to program the charging current makes it suitable for a wide range of battery capacities and types.

Detailed and Complete Alternative Models

• LT3650EDD-4.1#TRPBF: Similar to LT3650EDD-4.2#TRPBF but with a charge voltage of 4.1V
• LT3650EDD-4.3#TRPBF: Similar to LT3650EDD-4.2#TRPBF but with a charge voltage of 4.3V
• LT3650EDD-4.2#PBF: Lead (Pb)-free version of LT3650EDD-4.2#TRPBF

These alternative models provide options for different charge voltages or lead-free requirements while maintaining similar functionality and characteristics.

In conclusion, the LT3650EDD-4.2#TRPBF is a highly efficient power management IC designed for charging lithium-ion batteries. Its compact package, programmable charging current, and built-in protection features make it an ideal choice for various