LT3957AEUHE#PBF

Product Overview

The LT3957AEUHE#PBF belongs to the category of high voltage, low quiescent current step-down switching regulators. It is commonly used in applications requiring efficient power conversion with minimal power loss. The device is known for its high input voltage range, low quiescent current, and compact package, making it suitable for a wide range of industrial and automotive applications. The LT3957AEUHE#PBF is available in a 16-lead QFN package and is designed to provide high efficiency and reliability in demanding environments.

Basic Information

• Category: High Voltage, Low Quiescent Current Step-Down Switching Regulator
• Use: Efficient power conversion with minimal power loss
• Characteristics: High input voltage range, low quiescent current, compact package
• Package: 16-lead QFN
• Essence: High efficiency and reliability
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Voltage Range: Up to 80V
• Output Current: Up to 3A
• Quiescent Current: As low as 6µA
• Switching Frequency: Adjustable up to 2MHz
• Operating Temperature Range: -40°C to 125°C
• Efficiency: Up to 95%

Detailed Pin Configuration

The LT3957AEUHE#PBF features a 16-lead QFN package with the following pin configuration: 1. VIN: Input Voltage 2. SW: Switch Node 3. GND: Ground 4. FB: Feedback Pin 5. SYNC/MODE: Synchronization or Mode Selection 6. SS/TR/UVLO: Soft-Start, Tracking, or Undervoltage Lockout 7. RT/CLKOUT: Timing Resistor or Clock Output 8. VCC: Supply Voltage for Gate Driver

Functional Features

• Wide Input Voltage Range for Versatile Applications
• Low Quiescent Current for Enhanced Efficiency
• Adjustable Switching Frequency for Flexibility
• Integrated Soft-Start and Tracking Functions for Controlled Start-Up
• Synchronization Capability for Noise-Sensitive Environments
• Overtemperature and Overcurrent Protection for Robust Operation

Advantages and Disadvantages

Advantages

• High Efficiency
• Wide Input Voltage Range
• Compact Package
• Integrated Protection Features

Disadvantages

• Limited Output Current compared to some alternatives
• Higher cost compared to basic regulators

Working Principles

The LT3957AEUHE#PBF operates as a step-down switching regulator, converting a higher input voltage to a lower output voltage with minimal power loss. It utilizes a high-frequency switching topology to achieve efficient power conversion and features integrated control functions to ensure stable and reliable operation across varying load conditions.

Detailed Application Field Plans

The LT3957AEUHE#PBF is well-suited for a variety of applications, including: - Automotive Electronics - Industrial Power Supplies - LED Lighting Systems - Battery-Powered Devices - Distributed Power Architectures

Detailed and Complete Alternative Models

Some alternative models to the LT3957AEUHE#PBF include: - LT3970: Similar high voltage, low quiescent current step-down regulator with different package options - LT8610: High efficiency synchronous step-down regulator with comparable input voltage range - LM2675: Cost-effective step-down regulator with lower input voltage range

In conclusion, the LT3957AEUHE#PBF offers a balance of high efficiency, wide input voltage range, and integrated protection features, making it an ideal choice for various industrial and automotive applications where reliable power conversion is essential.

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