Linear Technology/Analog Devices
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LT3667EUDD#TRPBF
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LT3667EUDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency step-down DC/DC converter - Wide input voltage range: 2.5V to 36V - Adjustable output voltage range: 0.8V to 34V - Maximum output current: 4A - Internal compensation network - Low quiescent current: 50µA - Programmable soft-start - Synchronizable switching frequency - Thermal shutdown and current limit protection - Small package size: 3mm x 6mm DFN-12

Package: 12-Lead, 3mm x 6mm DFN

Essence: The LT3667EUDD#TRPBF is a high-efficiency step-down DC/DC converter designed for power management applications. It offers a wide input voltage range, adjustable output voltage, and high output current capability.

Packaging/Quantity: The LT3667EUDD#TRPBF is available in a 12-lead, 3mm x 6mm DFN package. The quantity per reel is typically 2500 units.

Specifications

  • Input Voltage Range: 2.5V to 36V
  • Output Voltage Range: 0.8V to 34V
  • Maximum Output Current: 4A
  • Quiescent Current: 50µA
  • Switching Frequency: Programmable, up to 2MHz
  • Operating Temperature Range: -40°C to 125°C
  • Package Type: 12-Lead, 3mm x 6mm DFN

Pin Configuration

The LT3667EUDD#TRPBF has the following pin configuration:

  1. VIN: Input Voltage
  2. SW: Switch Node
  3. GND: Ground
  4. FB: Feedback Voltage
  5. SS: Soft-Start
  6. SYNC: Synchronization Input
  7. VOUT: Output Voltage
  8. PGND: Power Ground
  9. EN: Enable Pin
  10. BST: Bootstrap Capacitor Connection
  11. LX: Inductor Connection
  12. NC: No Connect

Functional Features

  1. High Efficiency: The LT3667EUDD#TRPBF offers high efficiency in step-down voltage conversion, minimizing power losses.
  2. Wide Input Voltage Range: It can accept input voltages ranging from 2.5V to 36V, making it suitable for various applications.
  3. Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to 34V, providing flexibility in design.
  4. Programmable Soft-Start: The soft-start feature allows for controlled startup and prevents excessive inrush current.
  5. Synchronizable Switching Frequency: The switching frequency can be synchronized with an external clock signal.
  6. Protection Features: The IC includes thermal shutdown and current limit protection to ensure safe operation.

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Adjustable output voltage - Programmable soft-start - Synchronizable switching frequency - Thermal shutdown and current limit protection

Disadvantages: - Limited maximum output current (4A)

Working Principles

The LT3667EUDD#TRPBF is a step-down DC/DC converter that uses a switching regulator topology. It operates by rapidly switching the input voltage across an inductor and then filtering it to obtain the desired output voltage. The internal control circuitry adjusts the duty cycle of the switching signal to regulate the output voltage.

During operation, the input voltage is connected to the VIN pin, and the output voltage is obtained from the VOUT pin. The SW pin is connected to an external inductor, while the LX pin is connected to the other end of the inductor. The FB pin provides feedback to the control circuitry for voltage regulation.

Detailed Application Field Plans

The LT3667EUDD#TRPBF is suitable for a wide range of power management applications, including but not limited to: - Industrial equipment - Automotive systems - Telecom infrastructure - Portable devices - Battery-powered systems - Distributed power supplies

Detailed and Complete Alternative Models

  1. LT8610ABEUJ#PBF: 42V, 2.5A Synchronous Step-Down Regulator
  2. LT1763CS8-3.3#PBF: 500mA, Low Dropout Linear Regulator
  3. LT3080EST#PBF: Adjustable 1.1A Single Resistor Low Dropout Regulator
  4. LT3976EMSE#PBF: 60V, 5A Step-Down Switching Regulator
  5. LT8640SIV#PBF

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT3667EUDD#TRPBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LT3667EUDD#TRPBF in technical solutions:

  1. Q: What is LT3667EUDD#TRPBF? A: LT3667EUDD#TRPBF is a specific model number of a power management IC (integrated circuit) developed by Linear Technology (now part of Analog Devices). It is designed for various applications, including LED drivers, battery chargers, and other power supply solutions.

  2. Q: What are the key features of LT3667EUDD#TRPBF? A: Some key features of LT3667EUDD#TRPBF include a wide input voltage range, high efficiency, adjustable output voltage/current, integrated power switches, and protection features such as overvoltage and overcurrent protection.

  3. Q: How can I use LT3667EUDD#TRPBF as an LED driver? A: To use LT3667EUDD#TRPBF as an LED driver, you can connect the LED load to the output pins of the IC and configure the desired output voltage and current using the appropriate resistors or feedback components.

  4. Q: Can LT3667EUDD#TRPBF be used for battery charging applications? A: Yes, LT3667EUDD#TRPBF can be used for battery charging applications. It supports constant-current/constant-voltage charging profiles and can be configured to charge different types of batteries.

  5. Q: What is the maximum input voltage supported by LT3667EUDD#TRPBF? A: The maximum input voltage supported by LT3667EUDD#TRPBF is typically around 40V, but it is always recommended to refer to the datasheet for the exact specifications.

  6. Q: How efficient is LT3667EUDD#TRPBF? A: LT3667EUDD#TRPBF has high efficiency, typically above 90%, which helps in minimizing power losses and maximizing battery life.

  7. Q: Does LT3667EUDD#TRPBF have any protection features? A: Yes, LT3667EUDD#TRPBF has built-in protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  8. Q: Can I adjust the output voltage and current of LT3667EUDD#TRPBF? A: Yes, you can adjust the output voltage and current of LT3667EUDD#TRPBF by using external resistors or feedback components according to the desired specifications.

  9. Q: What are the typical applications of LT3667EUDD#TRPBF? A: Some typical applications of LT3667EUDD#TRPBF include LED lighting systems, portable devices, battery-powered equipment, and various power supply solutions.

  10. Q: Where can I find more information about LT3667EUDD#TRPBF? A: You can find more detailed information about LT3667EUDD#TRPBF, including its datasheet, application notes, and technical support, on the Analog Devices website or by contacting their customer support team.