LT3753HFE#PBF

Product Overview

Category

The LT3753HFE#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is primarily used for controlling and regulating power in various electronic systems, such as power supplies, battery chargers, LED drivers, and other similar applications.

Characteristics

• High efficiency: The LT3753HFE#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 various output configurations, including buck, boost, buck-boost, and SEPIC.
• Adjustable frequency: The operating frequency of the IC can be adjusted to optimize performance based on specific requirements.
• Protection features: It incorporates several protection features like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe operation.

Package

The LT3753HFE#PBF is available in a compact and industry-standard 20-pin TSSOP package. This package provides excellent thermal performance and ease of integration into different circuit designs.

Essence

The essence of LT3753HFE#PBF lies in its ability to efficiently manage power conversion, enabling reliable and optimized operation of electronic systems.

Packaging/Quantity

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

Specifications

• Input Voltage Range: 4V to 60V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C
• Control Interface: SPI (Serial Peripheral Interface)
• Efficiency: Up to 95%

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VCC: Supply voltage for internal circuitry
4. SDI: Serial data input for SPI communication
5. SDO: Serial data output for SPI communication
6. SCK: Serial clock input for SPI communication
7. SYNC: Synchronization input for external clock
8. FB: Feedback pin for output voltage regulation
9. SS: Chip select input for SPI communication
10. EN/UVLO: Enable and undervoltage lockout control pin
11. PGND: Power ground reference pin
12. SW: Switching node connection for power conversion
13. BST: Boost capacitor connection
14. LX: Inductor connection for power conversion
15. COMP: Compensation pin for stability optimization
16. RT/CLKOUT: External resistor connection for frequency adjustment or clock output
17. AGND: Analog ground reference pin
18. VREF: Reference voltage output
19. ADJ: Output voltage adjustment pin
20. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• Flexible output configurations enable versatile power conversion options.
• Adjustable switching frequency provides optimization for different applications.
• Comprehensive protection features ensure safe operation and system reliability.
• SPI interface facilitates easy control and monitoring of the IC.

Advantages and Disadvantages

Advantages

• High efficiency power conversion reduces energy losses.
• Versatile output configurations cater to diverse application needs.
• Compact package enables easy integration into different circuit designs.
• Extensive protection features enhance system safety and reliability.
• Adjustable frequency allows optimization for specific requirements.

Disadvantages

• Limited maximum switching frequency may not be suitable for certain high-frequency applications.
• Requires external components for complete power management solutions.

Working Principles

The LT3753HFE#PBF operates based on a pulse-width modulation (PWM) control scheme. It regulates the power conversion process by adjusting the duty cycle of the switching transistor. This control mechanism ensures that the output voltage remains stable and within the desired range, even with varying input voltages.

The IC incorporates a feedback loop that continuously monitors the output voltage and adjusts the duty cycle accordingly. It also includes various protection circuits to safeguard against overvoltage, overcurrent, and thermal issues.

Detailed Application Field Plans

The LT3753HFE#PBF finds applications in a wide range of electronic systems, including:

1. Power supplies for industrial equipment
2. Battery chargers for portable devices
3. LED drivers for lighting applications
4. Automotive power management systems
5. Renewable energy systems
6. Telecom infrastructure power modules
7. Medical equipment power supplies

Detailed and Complete Alternative Models

1. LT3753HFE#TRPBF: Similar to LT3753HFE#PBF but supplied in tape and reel packaging with 1500 units per reel.
2. LT3753HFE#PBF-ND: Same as LT3753