LT3650IDD-8.4#PBF

Product Overview

Category

The LT3650IDD-8.4#PBF belongs to the category of integrated circuits (ICs) used in power management.

Use

This IC is primarily used for battery charging applications, specifically for lithium-ion batteries.

Characteristics

• The LT3650IDD-8.4#PBF is a high-performance battery charger IC.
• It offers a wide input voltage range, making it suitable for various power sources.
• The IC provides a constant current and constant voltage charging algorithm for efficient and safe battery charging.
• It incorporates advanced protection features such as thermal shutdown and reverse battery protection.
• The LT3650IDD-8.4#PBF supports fast charging, reducing charging time for lithium-ion batteries.

Package

The LT3650IDD-8.4#PBF is available in a small form factor package, known as DFN (Dual Flat No-Lead). This package ensures easy integration into compact electronic devices.

Essence

The essence of the LT3650IDD-8.4#PBF lies in its ability to provide reliable and efficient charging for lithium-ion batteries, ensuring optimal performance and extended battery life.

Packaging/Quantity

This IC is typically sold in reels or tubes, with a standard quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.95V to 32V
• Charging Voltage: 8.4V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to 85°C
• Package Type: DFN-10

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. FLT: Fault indicator pin
6. BAT: Battery connection pin
7. TS: Thermal shutdown pin
8. SS: Soft-start pin
9. FB: Feedback pin for regulating charging voltage
10. VOUT: Output voltage pin

Functional Features

• Constant current and constant voltage charging algorithm
• Programmable charging current through the PROG pin
• Status and fault indicators for monitoring charging process
• Thermal shutdown protection to prevent overheating
• Reverse battery protection to avoid damage in case of incorrect battery connection
• Soft-start feature for smooth charging initiation

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Fast charging capability reduces charging time for lithium-ion batteries.
• Advanced protection features ensure safe and reliable charging.
• Small form factor package enables easy integration into compact devices.

Disadvantages

• Limited to lithium-ion battery charging applications.
• Requires external components for complete charging circuit implementation.

Working Principles

The LT3650IDD-8.4#PBF operates based on a constant current and constant voltage charging algorithm. It regulates the charging current and voltage to ensure optimal charging efficiency and battery health. The IC incorporates various protection mechanisms, such as thermal shutdown and reverse battery protection, to safeguard the battery and the charging circuit from potential damage.

Detailed Application Field Plans

The LT3650IDD-8.4#PBF finds extensive use in portable electronic devices, including smartphones, tablets, and wearable devices. It is also suitable for battery-powered industrial equipment, medical devices, and automotive applications where lithium-ion batteries are utilized.

Detailed and Complete Alternative Models

1. LT3650IDD-8.2#PBF: Similar to LT3650IDD-8.4#PBF but with a charging voltage of 8.2V.
2. LT3650IDD-7.4#PBF: Similar to LT3650IDD-8.4#PBF but with a charging voltage of 7.4V.
3. LT3650IDD-12.6#PBF: Similar to LT3650IDD-8.4#PBF but with a charging voltage of 12.6V.

These alternative models provide flexibility in charging different lithium-ion battery configurations and voltages.

In conclusion, the LT3650IDD-8.4#PBF is a high-performance battery charger IC designed for efficient and safe charging of lithium-ion batteries. Its wide input voltage range, advanced protection features, and small form factor package make it an ideal choice for various portable electronic devices and industrial applications.