LT3751EUFD#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Voltage Boost Controller - Wide Input Voltage Range - Adjustable Output Voltage - High Efficiency - Current Mode Control - Synchronous Rectification - Programmable Soft-Start - Fault Protection Features

Package: 28-Lead 4mm x 5mm QFN

Essence: The LT3751EUFD#PBF is a high voltage boost controller designed for power management applications. It offers a wide input voltage range and adjustable output voltage, making it suitable for various power supply designs.

Packaging/Quantity: The LT3751EUFD#PBF is available in a 28-Lead 4mm x 5mm QFN package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 3V to 40V
• Output Voltage Range: Up to 60V
• Switching Frequency: Up to 500kHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 200µA

Pin Configuration

The LT3751EUFD#PBF has the following pin configuration:

1. VCC: Supply Voltage Input
2. GND: Ground
3. FB: Feedback Pin
4. SS: Soft-Start Pin
5. SYNC/MODE: Synchronization/MODE Selection Pin
6. RT/CLKOUT: Oscillator Resistor/External Clock Output Pin
7. SW: Switch Node Connection
8. PGND: Power Ground
9. BST: Bootstrap Capacitor Connection
10. VIN: Input Voltage
11. VOUT: Output Voltage

(Note: The pin configuration mentioned above is not exhaustive. Please refer to the datasheet for a complete pinout diagram.)

Functional Features

• High voltage boost controller for power management applications
• Wide input voltage range allows flexibility in power supply design
• Adjustable output voltage to meet specific requirements
• Current mode control for improved stability and response
• Synchronous rectification for increased efficiency
• Programmable soft-start to reduce inrush current
• Fault protection features such as overvoltage, undervoltage, and overcurrent protection

Advantages and Disadvantages

Advantages: - Wide input voltage range enables versatile applications - Adjustable output voltage provides flexibility - High efficiency helps conserve energy - Current mode control enhances stability and response - Synchronous rectification improves overall efficiency - Programmable soft-start reduces inrush current - Fault protection features ensure system reliability

Disadvantages: - May require additional external components for certain applications - Limited maximum duty cycle may restrict some designs

Working Principles

The LT3751EUFD#PBF operates as a high voltage boost controller by regulating the input voltage to achieve the desired output voltage. It utilizes current mode control to maintain stability and response during load variations. The synchronous rectification feature improves efficiency by reducing power losses.

The device incorporates fault protection features such as overvoltage, undervoltage, and overcurrent protection to safeguard the system from potential damage. The programmable soft-start function limits the inrush current during startup, preventing excessive stress on the components.

Application Field Plans

The LT3751EUFD#PBF can be used in various power management applications, including but not limited to: - Battery chargers - LED drivers - Industrial power supplies - Automotive systems - Telecom infrastructure

Alternative Models

Some alternative models that offer similar functionality to the LT3751EUFD#PBF include: - LT3750EUFD#PBF - LT3752EUFD#PBF - LT3753EUFD#PBF

(Note: The list of alternative models mentioned above is not exhaustive. Please refer to the manufacturer's website or datasheet for a complete list.)

In conclusion, the LT3751EUFD#PBF is a high voltage boost controller that offers a wide input voltage range, adjustable output voltage, and various features for efficient power management. Its versatility and reliability make it suitable for a range of applications in different industries.