LT3791EFE-1#PBF

Product Overview

Category

The LT3791EFE-1#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including but not limited to LED lighting, automotive electronics, industrial equipment, and telecommunications.

Characteristics

• High efficiency: The LT3791EFE-1#PBF offers high efficiency power conversion, minimizing energy losses.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Versatile output configurations: The IC supports multiple output configurations, allowing flexibility in system design.
• Advanced protection features: It incorporates various protection mechanisms such as overvoltage, overcurrent, and thermal shutdown, ensuring safe operation.

Package

The LT3791EFE-1#PBF is available in a small form factor package, typically a 28-pin TSSOP (Thin Shrink Small Outline Package).

Essence

The essence of LT3791EFE-1#PBF lies in its ability to efficiently manage power conversion in a wide range of applications, providing reliable and stable power supply solutions.

Packaging/Quantity

The IC is usually supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 1MHz
• Maximum Output Current: 4A
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3791EFE-1#PBF has a total of 28 pins. Here is a detailed pin configuration:

1. VIN: Input voltage pin
2. SW: Switching node connection for power conversion
3. GND: Ground reference
4. FB: Feedback pin for regulating the output voltage
5. VCC: Supply voltage for internal circuitry
6. COMP: Compensation pin for stability control
7. SS: Soft-start pin for gradual startup
8. SYNC/CLKOUT: Synchronization or clock output pin
9. CLKIN: Clock input pin for synchronization
10. RT/SSC: External resistor or spread spectrum control pin
11. INTVCC: Internal supply voltage pin
12. PGND: Power ground reference
13. ITH: Current sense threshold setting pin
14. VREF: Reference voltage output pin
15. VSENSE: Voltage sense input pin
16. LX: Inductor connection pin 17-28. NC: No connect pins

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High switching frequency enables compact and efficient designs.
• Multiple protection features ensure safe operation under different conditions.
• Adjustable soft-start feature prevents excessive inrush current during startup.
• Synchronization capability facilitates parallel operation of multiple ICs.

Advantages and Disadvantages

Advantages

• High efficiency power conversion reduces energy losses.
• Versatile output configurations provide design flexibility.
• Advanced protection mechanisms enhance system reliability.
• Compact package size enables space-saving designs.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Complex pin configuration requires careful layout considerations.

Working Principles

The LT3791EFE-1#PBF operates based on a combination of pulse width modulation (PWM) and constant current control techniques. It regulates the output voltage by adjusting the duty cycle of the switching signal, while also monitoring the output current to maintain a stable power supply.

Detailed Application Field Plans

The LT3791EFE-1#PBF finds applications in various fields, including:

1. LED Lighting: It can be used to drive LED arrays or modules efficiently.
2. Automotive Electronics: The IC is suitable for powering various automotive systems such as infotainment, lighting, and sensors.
3. Industrial Equipment: It can be employed in power supply units for industrial machinery and equipment.
4. Telecommunications: The IC can provide stable power conversion for telecom infrastructure components.

Detailed and Complete Alternative Models

1. LT3791A: Similar to LT3791EFE-1#PBF but with a different pin configuration.
2. LT8391: Offers similar functionality with additional features such as fault protection and monitoring capabilities.
3. LT3761: Suitable for lower power applications with a reduced maximum output current.

These alternative models provide similar power management capabilities and can be considered based on specific design requirements.

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