LT3474IFE-1#TRPBF

Product Overview

Category

The LT3474IFE-1#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 regulate and control power supply voltages efficiently.

Characteristics

• High efficiency voltage regulation
• Wide input voltage range
• Adjustable output voltage
• Low quiescent current
• Overcurrent protection
• Thermal shutdown protection

Package

The LT3474IFE-1#TRPBF is available in a small form factor 16-lead TSSOP package, which allows for easy integration into compact electronic designs.

Essence

The essence of the LT3474IFE-1#TRPBF lies in its ability to provide efficient and reliable power management solutions for a wide range of electronic devices.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of units. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 36V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 3A
• Switching Frequency: Up to 1MHz
• Quiescent Current: 60µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3474IFE-1#TRPBF features a 16-pin TSSOP package with the following pin configuration:

1. SW: Switch Node Connection
2. GND: Ground
3. FB: Feedback Pin
4. VCC: Supply Voltage Input
5. EN: Enable Pin
6. SS/TR: Soft-Start/Tracking Pin
7. PGND: Power Ground
8. PGND: Power Ground
9. LX: Inductor Connection
10. LX: Inductor Connection
11. VCC: Supply Voltage Input
12. VCC: Supply Voltage Input
13. GND: Ground
14. GND: Ground
15. VOUT: Output Voltage
16. VOUT: Output Voltage

Functional Features

• High-efficiency step-down DC-DC converter
• Adjustable output voltage through external resistors
• Soft-start and tracking capability for controlled startup
• Overcurrent protection to safeguard the IC and load
• Thermal shutdown protection to prevent overheating

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption
• Wide input voltage range allows for versatile applications
• Adjustable output voltage provides flexibility in design
• Low quiescent current minimizes standby power consumption
• Overcurrent and thermal shutdown protection enhance reliability

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications
• Requires external components for proper operation, increasing overall system complexity

Working Principles

The LT3474IFE-1#TRPBF operates as a step-down DC-DC converter, converting a higher input voltage to a lower output voltage efficiently. It utilizes a switching regulator topology to achieve high conversion efficiency. The feedback pin (FB) is used to set the desired output voltage, which can be adjusted using external resistors. The enable pin (EN) controls the device's on/off state, allowing for power management. The soft-start/ tracking pin (SS/TR) enables controlled startup and can be used for sequencing multiple power supplies.

Detailed Application Field Plans

The LT3474IFE-1#TRPBF finds application in various fields, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial automation - Automotive electronics - LED lighting systems

Detailed and Complete Alternative Models

1. LT3474IFE#PBF: Similar to LT3474IFE-1#TRPBF, but without the tracking pin.
2. LT3474HFE-1#TRPBF: Higher maximum output current of 4A.
3. LT3474IFE-2#TRPBF: Lower quiescent current of 30µA.

These alternative models offer different specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

In conclusion, the LT3474IFE-1#TRPBF is a versatile and efficient power management IC that finds applications in various electronic devices. Its high efficiency, wide input voltage range, and adjustable output voltage make it a popular choice among designers. While it has some limitations, such as limited maximum output current and external component requirements, its advantages outweigh the disadvantages. With its reliable performance and comprehensive feature set, the LT3474IFE-1#TRPBF is an excellent choice for power management needs in diverse fields.