LT3753HFE

Product Overview

Category: Integrated Circuit (IC)

Use: The LT3753HFE is a high-performance integrated circuit designed for power management applications.

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current mode control - Protection features (overvoltage, overcurrent, and thermal shutdown) - Compact package size

Package: The LT3753HFE is available in a small form factor package, making it suitable for space-constrained applications.

Essence: The LT3753HFE is an essential component in power management systems, providing efficient and reliable control over power conversion processes.

Packaging/Quantity: The LT3753HFE is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The LT3753HFE has the following specifications:

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C
• Package Type: QFN-38

Pin Configuration

The LT3753HFE features a detailed pin configuration as follows:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. FB: Feedback pin for output voltage regulation
5. VCC: Supply voltage for internal control circuitry
6. SYNC: Synchronization input for external clock
7. SS/TR: Soft-start/tracking pin
8. COMP: Compensation pin for loop stability
9. RT/CLK: Timing resistor/clock synchronization pin
10. PGND: Power ground reference
11. VOUT: Output voltage pin
12. EN/UVLO: Enable/undervoltage lockout pin
13. SS/TR: Soft-start/tracking pin
14. COMP: Compensation pin for loop stability
15. RT/CLK: Timing resistor/clock synchronization pin
16. PGND: Power ground reference
17. VOUT: Output voltage pin
18. EN/UVLO: Enable/undervoltage lockout pin
19. VIN: Input voltage pin
20. SW: Switching node connection
21. GND: Ground reference
22. FB: Feedback pin for output voltage regulation
23. VCC: Supply voltage for internal control circuitry
24. SYNC: Synchronization input for external clock
25. SS/TR: Soft-start/tracking pin
26. COMP: Compensation pin for loop stability
27. RT/CLK: Timing resistor/clock synchronization pin
28. PGND: Power ground reference
29. VOUT: Output voltage pin
30. EN/UVLO: Enable/undervoltage lockout pin
31. SS/TR: Soft-start/tracking pin
32. COMP: Compensation pin for loop stability
33. RT/CLK: Timing resistor/clock synchronization pin
34. PGND: Power ground reference
35. VOUT: Output voltage pin
36. EN/UVLO: Enable/undervoltage lockout pin
37. VIN: Input voltage pin
38. SW: Switching node connection

Functional Features

The LT3753HFE offers the following functional features:

1. High Efficiency: The IC incorporates advanced power management techniques, resulting in high conversion efficiency.
2. Wide Input Voltage Range: The LT3753HFE can handle a wide range of input voltages, making it suitable for various applications.
3. Adjustable Output Voltage: The output voltage can be easily adjusted to meet specific requirements.
4. Current Mode Control: The IC utilizes current mode control for improved stability and response.
5. Protection Features: The LT3753HFE includes built-in protection mechanisms such as overvoltage, overcurrent, and thermal shutdown to ensure safe operation.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for versatile applications - Adjustable output voltage provides flexibility - Current mode control enhances stability - Protection features ensure system safety

Disadvantages: - Limited maximum switching frequency - Operating temperature range may not be suitable for extreme environments

Working Principles

The LT3753HFE operates based on a switching power supply principle. It uses a combination of control circuitry, power switches, and feedback mechanisms to regulate the input voltage and provide the desired output voltage. By controlling the switching frequency and duty cycle, the IC efficiently converts the input power to the required output power.

Detailed Application Field Plans

The LT3753HFE is well-suited for various power management applications, including but not limited to:

1. Industrial automation systems
2. Telecommunications equipment