LT3840MPFE#TRPBF

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 - Undervoltage lockout - Thermal shutdown

Package: 20-Lead TSSOP

Essence: The LT3840MPFE#TRPBF is a high-performance power management IC designed for various applications that require efficient power conversion.

Packaging/Quantity: The LT3840MPFE#TRPBF is available in a 20-Lead TSSOP package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 60V
• Output Voltage Range: 0.8V to 55V
• Switching Frequency: Up to 1MHz
• Maximum Continuous Output Current: 2A
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3840MPFE#TRPBF has 20 pins arranged as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. SS/TR: Soft-start/Tracking pin
5. SYNC: Synchronization pin for multiple ICs
6. VCC: Supply voltage pin for internal circuitry
7. PGND: Power ground pin
8. SW: Switch node pin
9. SW: Switch node pin
10. SW: Switch node pin
11. SW: Switch node pin
12. SW: Switch node pin
13. SW: Switch node pin
14. SW: Switch node pin
15. SW: Switch node pin
16. SW: Switch node pin
17. SW: Switch node pin
18. SW: Switch node pin
19. SW: Switch node pin
20. SW: Switch node pin

Functional Features

• High efficiency power conversion
• Wide input voltage range for versatile applications
• Adjustable output voltage to meet specific requirements
• Current mode control for stable operation
• Synchronous rectification for improved efficiency
• Programmable soft-start for controlled startup
• Overvoltage protection to safeguard connected devices
• Undervoltage lockout for reliable operation
• Thermal shutdown to prevent overheating

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Wide input voltage range allows for compatibility with various power sources - Adjustable output voltage provides flexibility in system design - Current mode control ensures stable and reliable operation - Synchronous rectification improves overall efficiency - Programmable soft-start prevents excessive inrush current - Overvoltage protection safeguards connected devices - Undervoltage lockout enhances system reliability - Thermal shutdown protects the IC from overheating

Disadvantages: - Limited maximum continuous output current (2A) - Requires careful thermal management at high operating temperatures

Working Principles

The LT3840MPFE#TRPBF operates on the principle of switching power conversion. It utilizes a high-frequency switching transistor to regulate the input voltage and provide a stable output voltage. The IC employs current mode control to maintain a constant output current, ensuring efficient power transfer. Synchronous rectification is used to minimize power losses during switching transitions. The IC also incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown to ensure safe and reliable operation.

Detailed Application Field Plans

The LT3840MPFE#TRPBF is suitable for a wide range of applications, including but not limited to: - Industrial power supplies - Automotive electronics - Telecommunications equipment - LED lighting systems - Battery charging circuits - Distributed power systems

Detailed and Complete Alternative Models

1. LT3840MPFE#PBF: Similar to LT3840MPFE#TRPBF, but available in a 20-Lead Plastic TSSOP package.
2. LT3840MPFE#PBF-ND: Same as LT3840MPFE#PBF, but available in tape and reel packaging.

These alternative models offer similar functionality and performance characteristics to the LT3840MPFE#TRPBF, providing options for different packaging preferences or ordering requirements.

Word count: 511 words