LT3957IUHE#TRPBF

Product Overview

Category

The LT3957IUHE#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 and systems to efficiently manage power distribution, voltage regulation, and current control.

Characteristics

• High efficiency: The LT3957IUHE#TRPBF is known for its high efficiency, allowing for optimal power utilization.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Multiple outputs: This IC provides multiple output channels, enabling simultaneous power management for different components.
• Protection features: It incorporates various protection mechanisms such as overvoltage, undervoltage, and overcurrent protection, ensuring safe operation.

Package

The LT3957IUHE#TRPBF is available in a compact and industry-standard package, which facilitates easy integration into circuit boards.

Essence

The essence of the LT3957IUHE#TRPBF lies in its ability to efficiently regulate and distribute power within electronic systems, enhancing overall performance and reliability.

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: 4V to 36V
• Output Voltage Range: Adjustable from 0.8V to 34V
• Maximum Output Current: 3A per channel
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to 125°C
• Package Type: 38-Lead QFN

Detailed Pin Configuration

The LT3957IUHE#TRPBF features a 38-lead QFN package with the following pin configuration:

1. VIN: Input voltage
2. SW1: Switching node 1
3. SW2: Switching node 2
4. SW3: Switching node 3
5. SW4: Switching node 4
6. GND: Ground
7. FB1: Feedback 1
8. FB2: Feedback 2
9. FB3: Feedback 3
10. FB4: Feedback 4
11. VOUT1: Output voltage 1
12. VOUT2: Output voltage 2
13. VOUT3: Output voltage 3
14. VOUT4: Output voltage 4
15. EN1: Enable 1
16. EN2: Enable 2
17. EN3: Enable 3
18. EN4: Enable 4
19. SYNC: Synchronization input
20. SS/TRK: Soft-start/tracking control

Functional Features

• High-efficiency synchronous buck regulator
• Wide input voltage range for versatile applications
• Multiple output channels with adjustable voltages
• Integrated protection features for safe operation
• Programmable switching frequency for optimization
• Soft-start and tracking control for smooth power-up

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and heat generation.
• Wide input voltage range allows for compatibility with various power sources.
• Multiple outputs enable simultaneous power management for different components.
• Integrated protection mechanisms enhance system reliability and durability.
• Programmable switching frequency offers flexibility in design.

Disadvantages

• Complex pin configuration may require careful layout considerations during circuit design.
• Limited maximum output current per channel may not be suitable for high-power applications.
• Higher cost compared to non-integrated power management solutions.

Working Principles

The LT3957IUHE#TRPBF operates as a synchronous buck regulator, converting the input voltage to a lower, regulated output voltage. It utilizes high-frequency switching techniques to efficiently transfer power from the input to the output. The integrated control circuitry ensures stable and accurate voltage regulation while providing multiple output channels with adjustable voltages.

Detailed Application Field Plans

The LT3957IUHE#TRPBF finds applications in various fields, including but not limited to:

1. Automotive electronics: Power management for infotainment systems, lighting modules, and motor control units.
2. Industrial automation: Voltage regulation for PLCs (Programmable Logic Controllers), motor drives, and sensors.
3. Telecommunications: Power distribution for network equipment, base stations, and communication devices.
4. Consumer electronics: Efficient power management for smartphones, tablets, and portable devices.
5. Renewable energy systems: Voltage control for solar inverters, wind turbines, and battery charging systems.

Detailed and Complete Alternative Models

1. LT3970IUHE#TRPBF: Similar to LT3957IUHE#TRPBF with higher maximum output current per channel (5A).
2. LT8614EM