Linear Technology/Analog Devices
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LTC3374EFE

LTC3374EFE

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Wide Input Voltage Range - Multiple Output Configurations - Low Quiescent Current - Small Package Size

Package: 24-Lead TSSOP

Essence: The LTC3374EFE is a versatile power management IC designed for various applications that require multiple power supply voltages. It integrates a high-efficiency buck regulator and three low dropout (LDO) linear regulators, providing a compact solution for powering different components in electronic systems.

Packaging/Quantity: The LTC3374EFE is available in a 24-Lead Thin Shrink Small Outline Package (TSSOP). It is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 2.25V to 5.5V
  • Buck Regulator Output Voltage Range: 0.8V to VIN
  • LDO Regulator Output Voltage Range: 0.8V to 3.6V
  • Maximum Buck Regulator Output Current: 1.5A
  • Maximum LDO Regulator Output Current: 300mA
  • Quiescent Current: 35µA (typical)
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3374EFE has a total of 24 pins. Here is the pin configuration:

  1. VIN: Input Voltage
  2. SW1: Switch Node for Buck Regulator 1
  3. FB1: Feedback Node for Buck Regulator 1
  4. EN1: Enable Pin for Buck Regulator 1
  5. GND: Ground
  6. SW2: Switch Node for Buck Regulator 2
  7. FB2: Feedback Node for Buck Regulator 2
  8. EN2: Enable Pin for Buck Regulator 2
  9. SW3: Switch Node for Buck Regulator 3
  10. FB3: Feedback Node for Buck Regulator 3
  11. EN3: Enable Pin for Buck Regulator 3
  12. LDO1: Output Voltage for LDO Regulator 1
  13. LDO2: Output Voltage for LDO Regulator 2
  14. LDO3: Output Voltage for LDO Regulator 3
  15. VOUT4: Output Voltage for LDO Regulator 4
  16. EN4: Enable Pin for LDO Regulator 4
  17. PGND: Power Ground
  18. VOUT1: Output Voltage for Buck Regulator 1
  19. VOUT2: Output Voltage for Buck Regulator 2
  20. VOUT3: Output Voltage for Buck Regulator 3
  21. VCC: Supply Voltage
  22. VOUT: Output Voltage
  23. NC: No Connection
  24. NC: No Connection

Functional Features

  • Integrated buck regulator and three LDO regulators in a single IC
  • Wide input voltage range allows operation from various power sources
  • High efficiency conversion for improved power management
  • Multiple output configurations provide flexibility for different system requirements
  • Low quiescent current minimizes power consumption during standby or idle modes
  • Overcurrent and thermal protection for enhanced reliability

Advantages and Disadvantages

Advantages: - Compact solution for multiple power supply voltages - High efficiency conversion reduces power dissipation - Wide input voltage range accommodates diverse power sources - Comprehensive protection features enhance system reliability

Disadvantages: - Limited maximum output current for the LDO regulators - Requires careful consideration of thermal management due to high power density

Working Principles

The LTC3374EFE operates by regulating the input voltage using the integrated buck regulator and providing multiple regulated output voltages through the LDO regulators. The buck regulator steps down the input voltage to a desired level, while the LDO regulators further regulate the output voltages with low dropout voltage.

The device utilizes a feedback control loop to maintain the desired output voltages and compensates for load variations. It also incorporates protection features such as overcurrent and thermal shutdown to safeguard the IC and connected components.

Detailed Application Field Plans

The LTC3374EFE is suitable for a wide range of applications that require multiple power supply voltages. Some potential application fields include:

  1. Portable Electronic Devices: Provides power management for smartphones, tablets, portable media players, and other battery-powered devices.
  2. Industrial Control Systems: Offers efficient power distribution for control panels, motor drives, sensors, and other industrial equipment.
  3. Automotive Electronics: Supports various automotive systems such as infotainment systems, advanced driver-assistance systems (ADAS), and lighting controls.
  4. IoT Devices: Enables power management in Internet of Things (IoT) devices, including

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LTC3374EFE v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LTC3374EFE in technical solutions:

  1. Q: What is LTC3374EFE? A: LTC3374EFE is a specific model number for a power management integrated circuit (PMIC) developed by Linear Technology (now part of Analog Devices). It is designed to provide multiple power rails and various features for efficient power management in electronic systems.

  2. Q: What are the key features of LTC3374EFE? A: Some key features of LTC3374EFE include multiple synchronous buck regulators, LDO regulators, programmable sequencing, fault protection, and I²C/SMBus interface for control and monitoring.

  3. Q: What applications can LTC3374EFE be used in? A: LTC3374EFE can be used in a wide range of applications such as industrial automation, telecommunications, data centers, automotive electronics, medical devices, and portable consumer electronics.

  4. Q: How many power rails can LTC3374EFE support? A: LTC3374EFE can support up to four independent power rails, which can be configured as either buck regulators or LDO regulators.

  5. Q: Can LTC3374EFE handle high input voltages? A: Yes, LTC3374EFE has a wide input voltage range of 4V to 38V, making it suitable for applications with higher input voltages.

  6. Q: Does LTC3374EFE have any built-in protection features? A: Yes, LTC3374EFE includes various protection features such as overvoltage protection, undervoltage lockout, overcurrent protection, and thermal shutdown.

  7. Q: Can I program the sequencing of power rails with LTC3374EFE? A: Yes, LTC3374EFE allows for flexible sequencing of power rails through its programmable power-up and power-down sequencing feature.

  8. Q: Does LTC3374EFE provide any monitoring capabilities? A: Yes, LTC3374EFE offers voltage monitoring and reporting through its I²C/SMBus interface, allowing for real-time monitoring of the power rails.

  9. Q: Is LTC3374EFE a lead-free and RoHS-compliant component? A: Yes, LTC3374EFE is lead-free and RoHS-compliant, meeting the environmental regulations for electronic components.

  10. Q: Where can I find more information about LTC3374EFE? A: You can find more detailed information about LTC3374EFE, including datasheets, application notes, and technical support, on the Analog Devices website or by contacting their customer support.