LT3475IFE#TRPBF

Product Overview

Category

The LT3475IFE#TRPBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various electronic devices to efficiently regulate and control power supply, ensuring stable and reliable operation.

Characteristics

• High efficiency: The LT3475IFE#TRPBF offers high conversion efficiency, minimizing power losses during voltage regulation.
• Wide input voltage range: It can handle a broad range of input voltages, making it suitable for diverse applications.
• Compact package: The IC is available in a small form factor package, enabling space-saving designs.
• Low quiescent current: It has a low standby current consumption, enhancing energy efficiency.

Package and Quantity

The LT3475IFE#TRPBF is typically packaged in an industry-standard 16-pin TSSOP (Thin Shrink Small Outline Package). It is commonly sold in reels containing a specified quantity, usually 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 0.8V to 36V
• Maximum Output Current: 2A
• Switching Frequency: Adjustable up to 1MHz
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 80µA (typical)

Pin Configuration

The LT3475IFE#TRPBF features a 16-pin TSSOP package with the following pin configuration:

Pin 1: VIN Pin 2: SW Pin 3: GND Pin 4: FB Pin 5: COMP Pin 6: VCC Pin 7: SS/TR Pin 8: SYNC Pin 9: RT Pin 10: CT Pin 11: AGND Pin 12: PGND Pin 13: EN Pin 14: VOUT Pin 15: ISET Pin 16: LX

Functional Features

• Wide input voltage range allows for versatile applications.
• Adjustable switching frequency enables optimization for different operating conditions.
• Integrated synchronous rectification improves efficiency.
• Soft-start and current limit functions protect the circuit and load during startup and fault conditions.
• External synchronization capability facilitates system integration.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and heat dissipation.
• Compact package size enables space-efficient designs.
• Wide input voltage range provides flexibility in various applications.
• Adjustable switching frequency allows optimization for different requirements.
• Integrated protection features enhance reliability and safety.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external components for operation, increasing overall system complexity.

Working Principles

The LT3475IFE#TRPBF operates as a step-down (buck) switching regulator. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The IC incorporates a high-side switch and a low-side synchronous rectifier to achieve high conversion efficiency. By adjusting the duty cycle of the PWM signal, the output voltage is regulated according to the feedback information.

Detailed Application Field Plans

The LT3475IFE#TRPBF finds applications in various fields, including but not limited to: - Industrial automation - Automotive electronics - Telecommunications equipment - LED lighting systems - Portable electronic devices

Alternative Models

For similar power management applications, alternative models to the LT3475IFE#TRPBF include: - LT3474: Similar specifications with a different pin configuration. - LT3476: Higher maximum output current capability. - LT3477: Integrated power switch and additional features.

These alternative models offer different trade-offs in terms of specifications, pin compatibility, and additional features, allowing designers to choose the most suitable option for their specific requirements.

In conclusion, the LT3475IFE#TRPBF is a versatile integrated circuit designed for efficient power management applications. Its high efficiency, wide input voltage range, and compact package make it an attractive choice for various electronic devices. However, its limited maximum output current and external component requirement should be considered when selecting this IC for specific applications.