LT3973HMSE-3.3#TRPBF

Product Overview

Category

The LT3973HMSE-3.3#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.

Use

This product is primarily used as a step-down switching regulator, providing a regulated output voltage from a higher input voltage source.

Characteristics

• Input Voltage Range: 2.75V to 60V
• Output Voltage: 3.3V
• Output Current: Up to 1A
• Switching Frequency: Adjustable up to 2MHz
• Efficiency: Up to 95%
• Package Type: MSOP-10E
• Operating Temperature Range: -40°C to 125°C

Package and Quantity

The LT3973HMSE-3.3#TRPBF is available in an MSOP-10E package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: The LT3973HMSE-3.3#TRPBF can accept input voltages ranging from 2.75V to 60V, making it suitable for a wide range of applications.
• Output Voltage: This regulator provides a fixed output voltage of 3.3V, ensuring a stable power supply for connected devices.
• Output Current: With a maximum output current of 1A, the LT3973HMSE-3.3#TRPBF can deliver sufficient power to drive various loads.
• Switching Frequency: The switching frequency of this regulator is adjustable and can be set up to 2MHz, allowing for flexibility in design and optimization of efficiency.
• Efficiency: The LT3973HMSE-3.3#TRPBF offers high efficiency, reaching up to 95%. This helps minimize power losses and improves overall system performance.

Pin Configuration

The LT3973HMSE-3.3#TRPBF features a 10-pin MSOP package with the following pin configuration:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. GND: Ground
4. FB: Feedback Pin for Output Voltage Regulation
5. SS: Soft-Start Capacitor Connection
6. VCC: IC Supply Voltage
7. PGND: Power Ground
8. SYNC: External Clock Synchronization
9. RT: Oscillator Frequency Setting Resistor
10. LX: Inductor Connection

Functional Features

• Wide Input Voltage Range: The LT3973HMSE-3.3#TRPBF can handle a wide range of input voltages, making it suitable for various applications.
• High Efficiency: With its high efficiency rating of up to 95%, this regulator minimizes power losses and maximizes energy utilization.
• Adjustable Switching Frequency: The switching frequency can be adjusted up to 2MHz, allowing designers to optimize efficiency and reduce component size.
• Integrated Protection Features: The LT3973HMSE-3.3#TRPBF incorporates various protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring safe operation and protecting connected devices.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables versatile application possibilities.
• High efficiency reduces power consumption and heat dissipation.
• Adjustable switching frequency allows for optimization based on specific requirements.
• Integrated protection features enhance reliability and safety.

Disadvantages

• Limited output current of 1A may not be sufficient for high-power applications.
• MSOP package may require additional considerations for thermal management in certain designs.

Working Principles

The LT3973HMSE-3.3#TRPBF operates as a step-down switching regulator. It utilizes a high-frequency switching transistor to convert the higher input voltage into a regulated lower output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

When the input voltage exceeds the required output voltage, the internal control circuit reduces the duty cycle, resulting in a lower average output voltage. Conversely, when the input voltage drops below the desired output voltage, the duty cycle is increased to compensate and maintain regulation.

Detailed Application Field Plans

The LT3973HMSE-3.3#TRPBF can be applied in various fields, including but not limited to: - Industrial automation systems - Automotive electronics - Telecommunications equipment - Power management for portable devices - LED lighting applications

Detailed Alternative Models

For those seeking alternative models with similar functionality, the following options are available: - LT3972HMSE-3.3#TRPBF: Similar specifications and features, but with a different package type (MSOP-12E). - LT3975HMSE-