LT3741EFE#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Synchronous Step-Down DC/DC Converter
• Package: 28-Lead TSSOP
• Essence: Regulates voltage levels efficiently in power management applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 3.6V to 36V
• Output Voltage Range: 0.8V to 34V
• Switching Frequency: Up to 2MHz
• Maximum Output Current: 4A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3741EFE#TRPBF IC has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. PGND: Power Ground
4. AGND: Analog Ground
5. FB: Feedback Voltage Input
6. VCC: Internal Regulator Output
7. SS: Soft-Start Control
8. SYNC/MODE: External Clock Synchronization or Mode Selection
9. RT/CLKOUT: Oscillator Resistor or Clock Output
10. CLKIN: External Clock Input
11. PGOOD: Power Good Indicator
12. EN/UVLO: Enable or Undervoltage Lockout Control
13. VREF: Reference Voltage Output
14. COMP: Error Amplifier Output
15. SS/TR/SSFB: Soft-Start, Tracking, or Soft-Start Feedback
16. ITH: Current Sense Threshold
17. BST: Bootstrap Capacitor Connection
18. SW: Switch Node Connection
19. PGND: Power Ground
20. AGND: Analog Ground
21. FB: Feedback Voltage Input
22. VCC: Internal Regulator Output
23. SS: Soft-Start Control
24. SYNC/MODE: External Clock Synchronization or Mode Selection
25. RT/CLKOUT: Oscillator Resistor or Clock Output
26. CLKIN: External Clock Input
27. PGOOD: Power Good Indicator
28. EN/UVLO: Enable or Undervoltage Lockout Control

Functional Features

The LT3741EFE#TRPBF offers the following functional features:

• High efficiency synchronous step-down DC/DC converter
• Wide input voltage range for versatile applications
• Adjustable output voltage to meet specific requirements
• High switching frequency for compact designs
• Integrated power and analog ground for improved performance
• Soft-start control for smooth startup
• External clock synchronization option for precise timing
• Power good indicator for system monitoring
• Enable and undervoltage lockout control for enhanced safety

Advantages and Disadvantages

Advantages of the LT3741EFE#TRPBF include:

• High efficiency operation, reducing power losses
• Wide input voltage range allows for flexibility in various applications
• Compact package size for space-constrained designs
• Adjustable output voltage meets specific requirements
• Integrated power and analog ground improve performance

Disadvantages of the LT3741EFE#TRPBF include:

• Limited maximum output current of 4A
• Requires external components for complete functionality
• Relatively high operating temperature range may require additional cooling measures

Working Principles

The LT3741EFE#TRPBF is a synchronous step-down DC/DC converter that regulates voltage levels efficiently. It operates by converting a higher input voltage to a lower output voltage using a switching regulator topology. The IC utilizes high-frequency switching to minimize power losses and maximize efficiency.

The input voltage is connected to the VIN pin, and the output voltage is obtained from the SW pin. The feedback voltage (FB) pin is used to set the desired output voltage level. The LT3741EFE#TRPBF employs an internal regulator (VCC) to power its internal circuitry.

By controlling the switching frequency and duty cycle, the IC adjusts the output voltage according to the feedback signal. Soft-start control ensures a gradual increase in output voltage during startup, preventing excessive current surges.

Detailed Application Field Plans

The LT3741EFE#TRPBF is suitable for various power management applications, including:

1. Industrial equipment
2. Automotive systems
3. Telecommunications infrastructure
4. Distributed power supplies
5. Battery-powered devices
6. LED lighting systems
7. Renewable energy systems

Its wide input voltage range, adjustable output voltage, and high efficiency make it versatile for different application scenarios.

Detailed and Complete Alternative Models

1. LT3741A: Similar specifications with enhanced thermal performance
2. LT3741B