LT3748EMS#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Voltage, High Efficiency, Synchronous Step-Down DC/DC Converter
• Package: MSOP-16
• Essence: The LT3748EMS#TRPBF is a versatile and efficient step-down DC/DC converter designed for various power management applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

The LT3748EMS#TRPBF offers the following specifications:

• Input Voltage Range: 3V to 36V
• Output Voltage Range: 0.79V to VIN
• Switching Frequency: Up to 550kHz
• Maximum Output Current: 2A
• Efficiency: Up to 94%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3748EMS#TRPBF features a 16-pin MSOP package with the following pin configuration:

1. VCC: Supply voltage input
2. GND: Ground reference
3. SW: Switch node connection
4. FB: Feedback voltage input
5. SS: Soft-start capacitor connection
6. SYNC/MODE: External synchronization or mode selection
7. RT/CLKOUT: Resistor timing or clock output
8. CLKIN: Clock input
9. PGND: Power ground
10. VOUT: Output voltage
11. ITH: Current sense threshold
12. SS/TR: Soft-start/tracking capacitor connection
13. EN/UVLO: Enable/undervoltage lockout control
14. BST: Bootstrap capacitor connection
15. LX: Inductor connection
16. VREF: Reference voltage output

Functional Features

The LT3748EMS#TRPBF offers the following functional features:

• High voltage operation up to 36V
• Wide input voltage range for versatile applications
• High efficiency synchronous step-down converter
• Adjustable output voltage
• Programmable switching frequency
• Soft-start and tracking capability
• External synchronization or mode selection
• Enable/undervoltage lockout control
• Overvoltage protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages of the LT3748EMS#TRPBF include:

• High efficiency leading to reduced power dissipation
• Versatile input and output voltage ranges
• Compact MSOP package for space-constrained designs
• Comprehensive protection features

Disadvantages of the LT3748EMS#TRPBF include:

• Limited maximum output current of 2A
• Requires external components for operation

Working Principles

The LT3748EMS#TRPBF operates as a synchronous step-down DC/DC converter. It uses a high-frequency switching technique to efficiently convert the input voltage to a lower output voltage. The integrated circuit incorporates a control loop that regulates the duty cycle of the internal switches to maintain the desired output voltage. By utilizing synchronous rectification, it minimizes power losses during the conversion process, resulting in high efficiency.

Detailed Application Field Plans

The LT3748EMS#TRPBF finds applications in various fields, including:

1. Industrial Power Supplies: Provides efficient power management for industrial equipment and machinery.
2. Automotive Electronics: Enables power conversion in automotive systems such as infotainment, lighting, and motor control.
3. Telecommunications: Suitable for powering telecom infrastructure equipment and communication devices.
4. Renewable Energy Systems: Facilitates power conversion in solar energy systems and wind turbines.
5. Consumer Electronics: Supports power management in portable devices, home appliances, and audio/video equipment.

Detailed and Complete Alternative Models

1. LT3748EMS#PBF: Similar to LT3748EMS#TRPBF, but available in a 16-pin SO package.
2. LT3748HMS#TRPBF: High temperature grade version of LT3748EMS#TRPBF with extended operating temperature range.
3. LT3748IMS#TRPBF: Low voltage version of LT3748EMS#TRPBF designed for input voltages up to 18V.

These alternative models offer similar functionality and can be considered as substitutes for the LT3748EMS#TRPBF in specific applications.

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