LT3645EUD#PBF

Product Overview

Category

The LT3645EUD#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulator ICs.

Use

This product is primarily used for voltage regulation in various electronic devices and systems. It provides a stable output voltage by regulating the input voltage.

Characteristics

• Input Voltage Range: 4V to 60V
• Output Voltage Range: 0.6V to 55V
• Maximum Output Current: 4A
• Efficiency: Up to 95%
• Switching Frequency: Adjustable up to 2MHz
• Package Type: 16-Lead QFN
• Operating Temperature Range: -40°C to 125°C

Package and Quantity

The LT3645EUD#PBF is available in a 16-Lead QFN package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: The LT3645EUD#PBF can accept input voltages ranging from 4V to 60V.
• Output Voltage Range: It can provide an adjustable output voltage ranging from 0.6V to 55V.
• Maximum Output Current: The maximum continuous output current supported by this IC is 4A.
• Efficiency: With its high-efficiency design, the LT3645EUD#PBF can achieve efficiency levels of up to 95%.
• Switching Frequency: The switching frequency of this voltage regulator IC is adjustable and can be set up to 2MHz.
• Package Type: This IC is packaged in a 16-Lead QFN package, which offers good thermal performance and compact size.
• Operating Temperature Range: The LT3645EUD#PBF can operate within a temperature range of -40°C to 125°C, making it suitable for various environments.

Pin Configuration

The LT3645EUD#PBF has a total of 16 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. GND: Ground
4. FB: Feedback Pin
5. COMP: Compensation Pin
6. SS/TR/UVLO: Soft-Start, Tracking, and Undervoltage Lockout
7. VCC: Supply Voltage
8. PGND: Power Ground
9. SYNC/MODE: Synchronization and Mode Selection
10. RT/CLKOUT: Timing Resistor and Clock Output
11. CLKIN: External Clock Input
12. SS/TR/UVLO: Soft-Start, Tracking, and Undervoltage Lockout
13. VCC: Supply Voltage
14. PGND: Power Ground
15. SYNC/MODE: Synchronization and Mode Selection
16. RT/CLKOUT: Timing Resistor and Clock Output

Functional Features

• Wide Input Voltage Range: The LT3645EUD#PBF can handle a wide range of input voltages, making it versatile for different applications.
• High Efficiency: With its efficient design, this IC can minimize power losses and maximize energy conversion.
• Adjustable Output Voltage: The output voltage can be easily adjusted according to the requirements of the application.
• Flexible Switching Frequency: The switching frequency can be adjusted up to 2MHz, allowing optimization for different operating conditions.
• Protection Features: The LT3645EUD#PBF incorporates various protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout to ensure safe operation.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with various power sources.
• High efficiency results in reduced power dissipation and longer battery life.
• Adjustable output voltage allows for customization based on specific application needs.
• Flexible switching frequency provides optimization for different operating conditions.
• Incorporation of protection features ensures safe operation and protects the IC from damage.

Disadvantages

• The 16-Lead QFN package may require specialized equipment for soldering and handling.
• Limited maximum output current of 4A may not be suitable for high-power applications.

Working Principles

The LT3645EUD#PBF operates as a step-down (buck) voltage regulator. It utilizes a switching topology to efficiently convert the input voltage to a lower, regulated output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage despite variations in the input voltage and load conditions. This regulation is achieved through feedback control using the FB pin.

Application Field Plans

The LT3645EUD#PBF finds applications in various fields, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Telecommunications systems -