LT3753MPFE#PBF

Product Overview

Category

The LT3753MPFE#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, and LED drivers.

Characteristics

• High efficiency: The LT3753MPFE#PBF offers high efficiency power conversion, minimizing energy loss during operation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Flexible output configuration: The IC supports multiple output configurations, allowing for versatile power management solutions.
• Protection features: It incorporates various protection mechanisms, including overvoltage, overcurrent, and thermal shutdown, ensuring safe operation.

Package and Quantity

The LT3753MPFE#PBF is available in a small form factor package, typically a 28-pin plastic TSSOP (Thin Shrink Small Outline Package). It is commonly sold in reels containing a specified quantity, usually 250 or 1000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: Programmable from 0.8V to 60V
• Maximum Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C
• Control Interface: SPI (Serial Peripheral Interface)
• Package Type: 28-pin TSSOP

Pin Configuration

The LT3753MPFE#PBF features a 28-pin TSSOP package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground reference
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. FB1: Feedback pin for output voltage regulation
9. FB2: Feedback pin for output voltage regulation
10. VOUT1: Output voltage 1
11. VOUT2: Output voltage 2
12. VOUT3: Output voltage 3
13. VOUT4: Output voltage 4
14. VOUT5: Output voltage 5
15. VOUT6: Output voltage 6
16. VOUT7: Output voltage 7
17. VOUT8: Output voltage 8
18. VOUT9: Output voltage 9
19. VOUT10: Output voltage 10
20. VOUT11: Output voltage 11
21. VOUT12: Output voltage 12
22. VOUT13: Output voltage 13
23. VOUT14: Output voltage 14
24. VOUT15: Output voltage 15
25. VOUT16: Output voltage 16
26. VOUT17: Output voltage 17
27. VOUT18: Output voltage 18
28. VOUT19: Output voltage 19

Functional Features

The LT3753MPFE#PBF offers the following functional features:

• High-efficiency step-down (buck) converter
• Programmable output voltage levels
• Current mode control for stable operation
• Soft-start and soft-stop functionality
• Fault protection mechanisms (overvoltage, overcurrent, thermal shutdown)
• External synchronization capability for precise timing control
• SPI interface for easy configuration and monitoring

Advantages and Disadvantages

Advantages

• High efficiency power conversion
• Wide input voltage range
• Flexible output configuration
• Comprehensive protection features
• Compact package size

Disadvantages

• Requires external components for operation
• Limited maximum switching frequency

Working Principles

The LT3753MPFE#PBF operates as a step-down (buck) converter, converting a higher input voltage to a lower output voltage. It utilizes a current mode control scheme to regulate the output voltage and maintain stable operation. The IC incorporates various protection mechanisms to safeguard against overvoltage, overcurrent, and thermal issues.

Detailed Application Field Plans

The LT3753MPFE#PBF finds applications in various fields, including:

1. Power supplies for industrial equipment
2. Battery chargers for portable devices
3. LED drivers for lighting systems
4. Automotive power management systems
5. Renewable energy systems (solar, wind)

Detailed and Complete Alternative Models

1. LT3753MPFE#TRPBF: Similar to LT3753MPFE#PBF but available in tape and reel packaging.
2. LT3753MPFE#PBF-ND: Same as LT3753MPFE#PBF, but available through specific distributors.