LT3758IDD#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current mode control - Synchronous rectification - Programmable soft-start - Overvoltage protection - Thermal shutdown

Package: 16-Lead, 4mm x 3mm DFN

Essence: The LT3758IDD#PBF is a high-efficiency, current-mode DC/DC converter designed for power management applications.

Packaging/Quantity: The LT3758IDD#PBF is available in a 16-Lead, 4mm x 3mm DFN package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 3V to 40V
• Output Voltage Range: 0.6V to 36V
• Switching Frequency: Up to 2MHz
• Maximum Continuous Output Current: 4A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3758IDD#PBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. SS/TR: Soft-Start/Tracking Pin
5. SYNC/MODE: Synchronization/Mode Selection Pin
6. VCC: Supply Voltage
7. SW: Switch Node
8. PGND: Power Ground
9. BST: Bootstrap Pin
10. COMP: Compensation Pin
11. RT/CLKOUT: Timing Resistor/Clock Output Pin
12. CLKIN: Clock Input Pin
13. ITH: Current Sense Threshold Pin
14. SS/TR: Soft-Start/Tracking Pin
15. VCC: Supply Voltage
16. VIN: Input Voltage

Functional Features

• High efficiency conversion of input voltage to output voltage.
• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in power management.
• Current mode control ensures stable and reliable operation.
• Synchronous rectification improves efficiency and reduces power loss.
• Programmable soft-start feature prevents excessive inrush current.
• Overvoltage protection safeguards the circuit from voltage spikes.
• Thermal shutdown protects the IC from overheating.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Wide input voltage range enables compatibility with various power sources. - Adjustable output voltage suits different load requirements. - Current mode control enhances stability and response. - Synchronous rectification improves overall efficiency. - Programmable soft-start prevents damage during startup. - Overvoltage protection ensures system reliability. - Thermal shutdown protects against overheating.

Disadvantages: - Limited maximum continuous output current (4A). - Requires careful consideration of thermal management due to high efficiency.

Working Principles

The LT3758IDD#PBF operates as a current-mode DC/DC converter. It converts an input voltage within the range of 3V to 40V to a regulated output voltage between 0.6V and 36V. The IC utilizes a synchronous rectification topology, which improves efficiency by reducing power losses.

The device employs current mode control to regulate the output voltage. This control scheme provides excellent line and load regulation, as well as fast transient response. The LT3758IDD#PBF also features programmable soft-start, overvoltage protection, and thermal shutdown for enhanced system reliability.

Detailed Application Field Plans

The LT3758IDD#PBF is suitable for a wide range of power management applications, including but not limited to: - Industrial equipment - Automotive systems - Telecommunications infrastructure - Data centers - Portable electronic devices - LED lighting

Detailed and Complete Alternative Models

1. LT3758IDD#TRPBF: Similar to LT3758IDD#PBF, but available in a 16-Lead, 4mm x 3mm DFN package. Sold in reels of 2500 units.
2. LT3758IMSE#PBF: Similar functionality as LT3758IDD#PBF, but available in a 16-Lead MSOP package. Suitable for space-constrained applications.
3. LT3758HDD#PBF: High temperature version of LT3758IDD#PBF, with an extended operating temperature range of -40°C to 150°C.

These alternative models offer similar features and performance, providing flexibility in choosing the most suitable option for specific applications.

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