LT3825EFE#PBF

Product Overview

Category

The LT3825EFE#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply designs, including those found in industrial equipment, automotive systems, and consumer electronics.

Characteristics

• The LT3825EFE#PBF is a high-performance synchronous step-down DC/DC converter.
• It operates with an input voltage range of 4.5V to 36V, making it suitable for a wide range of applications.
• This IC offers excellent efficiency and low quiescent current, resulting in reduced power consumption.
• It provides adjustable output voltage and current limit settings, allowing for flexibility in power supply design.

Package

The LT3825EFE#PBF is available in a small form factor 16-pin TSSOP package, which ensures ease of integration into various circuit board layouts.

Essence

The essence of the LT3825EFE#PBF lies in its ability to efficiently convert higher input voltages to lower output voltages while maintaining stable and regulated power delivery.

Packaging/Quantity

This IC is typically sold in reels or tubes, with each reel containing approximately 250 units.

Specifications

• Input Voltage Range: 4.5V to 36V
• Output Voltage Range: Adjustable
• Maximum Output Current: Up to 3A
• Switching Frequency: Adjustable up to 1MHz
• Efficiency: Up to 95%
• Quiescent Current: Low, typically around 50µA

Detailed Pin Configuration

The LT3825EFE#PBF features a 16-pin TSSOP package with the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. SS: Soft-Start Pin
5. SYNC/SS/TRK: Synchronization, Soft-Start, or Tracking Control Pin
6. VCC: IC Supply Voltage
7. SW: Switch Node
8. SW: Switch Node
9. PGND: Power Ground
10. PGND: Power Ground
11. COMP: Compensation Pin
12. RT/CLKOUT: External Resistor for Frequency Setting or Clock Output
13. CLKIN: Clock Input
14. EN/UVLO: Enable or Undervoltage Lockout Pin
15. NC: No Connection
16. VOUT: Output Voltage

Functional Features

• Wide input voltage range allows for versatile application scenarios.
• Adjustable output voltage and current limit settings provide flexibility in power supply design.
• High efficiency and low quiescent current contribute to reduced power consumption.
• Integrated soft-start and synchronization features enhance system reliability and performance.
• Protection features such as overvoltage, undervoltage, and overcurrent protection ensure safe operation.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with various power sources.
• Adjustable output voltage and current limit settings offer design flexibility.
• High efficiency results in reduced power dissipation and improved energy efficiency.
• Integrated protection features enhance system reliability and safety.
• Compact package facilitates easy integration into circuit board layouts.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external components for proper operation, increasing overall system complexity.
• Higher cost compared to non-integrated power management solutions.

Working Principles

The LT3825EFE#PBF operates based on a synchronous step-down DC/DC conversion principle. It utilizes a high-frequency switching regulator to efficiently convert higher input voltages to lower output voltages. The integrated control circuitry ensures stable and regulated power delivery by adjusting the duty cycle of the switching transistor. This control mechanism allows for precise voltage and current regulation, making it suitable for a wide range of power management applications.

Detailed Application Field Plans

The LT3825EFE#PBF finds application in various fields, including:

1. Industrial Equipment: Power supply designs for industrial machinery, automation systems, and control circuits.
2. Automotive Systems: Voltage regulation for automotive electronics, such as infotainment systems, lighting modules, and engine control units.
3. Consumer Electronics: Power management solutions for portable devices, home appliances, and audio/video equipment.
4. Telecommunications: Power supply designs for telecom infrastructure, base stations, and network equipment.
5. Renewable Energy: Voltage conversion and regulation in solar energy systems, wind turbines, and battery charging applications.

Detailed and Complete Alternative Models

1. LT8610ABEUJ#PBF: Synchronous step-down DC/DC converter with higher maximum output current capability.
2. LT1763CS8-3.3#PBF: Low dropout linear regulator suitable for low-power applications.
3. LT8303ES8#PBF: