Linear Technology/Analog Devices
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LTC3676HLXE

LTC3676HLXE

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
  • Package: 40-Lead Exposed Pad QFN
  • Essence: LTC3676HLXE is a power management IC designed for various applications requiring multiple power supply rails.
  • Packaging/Quantity: Available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: Programmable from 0.4V to 3.975V
  • Number of Outputs: 8
  • Quiescent Current: 50µA (typical)
  • Switching Frequency: 2MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3676HLXE has a 40-lead exposed pad QFN package. The pin configuration is as follows:

  1. VIN1: Input Voltage 1
  2. VIN2: Input Voltage 2
  3. VIN3: Input Voltage 3
  4. VOUT1: Output Voltage 1
  5. VOUT2: Output Voltage 2
  6. VOUT3: Output Voltage 3
  7. VOUT4: Output Voltage 4
  8. VOUT5: Output Voltage 5
  9. VOUT6: Output Voltage 6
  10. VOUT7: Output Voltage 7
  11. VOUT8: Output Voltage 8
  12. GND: Ground
  13. EN1: Enable 1
  14. EN2: Enable 2
  15. EN3: Enable 3
  16. EN4: Enable 4
  17. EN5: Enable 5
  18. EN6: Enable 6
  19. EN7: Enable 7
  20. EN8: Enable 8
  21. PG1: Power Good 1
  22. PG2: Power Good 2
  23. PG3: Power Good 3
  24. PG4: Power Good 4
  25. PG5: Power Good 5
  26. PG6: Power Good 6
  27. PG7: Power Good 7
  28. PG8: Power Good 8
  29. VREF: Reference Voltage
  30. SS: Soft-Start
  31. FB1: Feedback 1
  32. FB2: Feedback 2
  33. FB3: Feedback 3
  34. FB4: Feedback 4
  35. FB5: Feedback 5
  36. FB6: Feedback 6
  37. FB7: Feedback 7
  38. FB8: Feedback 8
  39. CLK: Clock
  40. SYNC: Synchronization

Functional Features

  • Multiple Outputs: LTC3676HLXE provides eight programmable output voltages, allowing flexibility in powering different components.
  • Power Good Indicators: The power good indicators (PG1 to PG8) provide a signal indicating the status of each output voltage.
  • Enable Control: The enable pins (EN1 to EN8) allow individual control of each output voltage.
  • Soft-Start: The soft-start pin (SS) enables controlled startup of the power supply outputs, reducing inrush current.
  • Synchronization: The synchronization pin (SYNC) allows synchronization of the switching frequency with an external clock.

Advantages and Disadvantages

Advantages: - High efficiency design - Low quiescent current - Wide input voltage range - Multiple output voltages - Power good indicators for each output - Individual enable control for each output

Disadvantages: - Limited to 8 output voltages - Requires external clock for synchronization

Working Principles

The LTC3676HLXE is a power management IC that integrates multiple voltage regulators and control circuitry. It efficiently converts the input voltage to multiple programmable output voltages, providing power to various components in a system. The enable pins allow individual control of each output, while the power good indicators provide feedback on the status of each voltage rail.

Detailed Application Field Plans

The LTC3676HLXE is suitable for a wide range of applications requiring multiple power supply rails. Some potential application fields include:

  1. Portable Electronics: Smartphones, tablets, portable gaming devices.
  2. Industrial Control Systems: PLCs (Programmable Logic Controllers), motor drives, industrial automation equipment.
  3. Automotive Electronics: Infotainment systems, advanced driver-assistance systems (ADAS), telematics.
  4. IoT Devices: Wearables, smart home devices, connected sensors.

Detailed and Complete Alternative Models

1.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LTC3676HLXE v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LTC3676HLXE in technical solutions:

  1. Q: What is LTC3676HLXE? A: LTC3676HLXE is a high-efficiency power management IC (PMIC) designed for use in various technical solutions.

  2. Q: What are the key features of LTC3676HLXE? A: The key features of LTC3676HLXE include multiple voltage regulators, power sequencing, power-on reset, watchdog timer, and I2C interface.

  3. Q: What technical solutions can LTC3676HLXE be used in? A: LTC3676HLXE can be used in a wide range of applications such as portable devices, industrial equipment, automotive systems, and IoT devices.

  4. Q: How many voltage regulators are there in LTC3676HLXE? A: LTC3676HLXE has six voltage regulators, including two buck regulators, two boost regulators, and two LDO regulators.

  5. Q: Can LTC3676HLXE support power sequencing? A: Yes, LTC3676HLXE supports flexible power sequencing, allowing you to control the order in which different power rails turn on/off.

  6. Q: Does LTC3676HLXE have a power-on reset feature? A: Yes, LTC3676HLXE includes a power-on reset circuit that monitors the input voltage and generates a reset signal during power-up.

  7. Q: Can LTC3676HLXE operate with an I2C interface? A: Yes, LTC3676HLXE has an integrated I2C interface, enabling easy control and monitoring of the device's settings and status.

  8. Q: What is the input voltage range supported by LTC3676HLXE? A: LTC3676HLXE can operate with an input voltage range of 2.7V to 5.5V.

  9. Q: Is LTC3676HLXE capable of providing high output current? A: Yes, LTC3676HLXE can deliver up to 1A of output current per buck regulator and boost regulator.

  10. Q: Does LTC3676HLXE have any built-in protection features? A: Yes, LTC3676HLXE includes various protection features like overvoltage protection, undervoltage lockout, thermal shutdown, and short-circuit protection.

Please note that these answers are general and may vary depending on the specific implementation and configuration of LTC3676HLXE in a given technical solution.