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UCC3809D-2G4
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UCC3809D-2G4

Product Overview

Category

UCC3809D-2G4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • Low-power, high-performance voltage mode PWM controller
  • Wide input voltage range
  • Adjustable frequency and maximum duty cycle
  • Integrated soft-start function
  • Overcurrent protection
  • Undervoltage lockout
  • Error amplifier with adjustable gain

Package

UCC3809D-2G4 is available in a small outline package (SOP) with 8 pins.

Essence

The essence of UCC3809D-2G4 lies in its ability to efficiently regulate and control power in various electronic systems.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 3V to 20V
  • Output Voltage Range: 0.8V to VCC
  • Maximum Duty Cycle: 100%
  • Operating Temperature Range: -40°C to 125°C
  • Switching Frequency Range: 50kHz to 1MHz
  • Quiescent Current: 1.5mA

Detailed Pin Configuration

UCC3809D-2G4 has the following pin configuration:

  1. COMP: Compensation pin for error amplifier
  2. FB: Feedback pin for regulating output voltage
  3. CS: Current sense pin for overcurrent protection
  4. GND: Ground reference pin
  5. RT/CT: Timing resistor/capacitor connection pin for frequency adjustment
  6. VREF: Reference voltage output pin
  7. VCC: Power supply input pin
  8. OUT: Output pin for driving external power devices

Functional Features

  1. Voltage Mode PWM Control: UCC3809D-2G4 utilizes voltage mode control to regulate the output voltage accurately.
  2. Wide Input Voltage Range: The IC can operate within a wide input voltage range, making it suitable for various power supply applications.
  3. Adjustable Frequency and Maximum Duty Cycle: The frequency and maximum duty cycle of the PWM signal can be adjusted to meet specific system requirements.
  4. Integrated Soft-Start Function: The integrated soft-start function prevents excessive inrush current during startup, ensuring a smooth power-up process.
  5. Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the system from potential damage caused by excessive current flow.
  6. Undervoltage Lockout: UCC3809D-2G4 includes undervoltage lockout circuitry, which disables the device when the input voltage falls below a certain threshold.
  7. Error Amplifier with Adjustable Gain: The error amplifier allows precise regulation of the output voltage, and its gain can be adjusted as needed.

Advantages and Disadvantages

Advantages

  • High-performance voltage regulation
  • Wide input voltage range for versatility
  • Adjustable frequency and duty cycle for flexibility
  • Integrated protection features enhance system reliability
  • Compact SOP package for space-constrained designs

Disadvantages

  • Limited output current capability
  • Requires external components for complete power management solution

Working Principles

UCC3809D-2G4 operates based on the voltage mode control technique. It compares the feedback voltage (FB) with the reference voltage (VREF) to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal. By modulating the duty cycle, the IC regulates the output voltage according to the desired setpoint.

The adjustable frequency and maximum duty cycle allow customization of the power management system's response characteristics. The integrated soft-start function ensures a controlled startup, preventing excessive current flow during power-up. Overcurrent protection and undervoltage lockout features safeguard the system from potential faults and damage.

Detailed Application Field Plans

UCC3809D-2G4 finds applications in various power management systems, including but not limited to: - Switching power supplies - DC-DC converters - Battery chargers - LED drivers - Motor control circuits

Its versatility and adjustable parameters make it suitable for a wide range of voltage regulation requirements.

Detailed and Complete Alternative Models

  1. UCC3809D-1: Similar to UCC3809D-2G4, but with a different reference voltage range.
  2. UCC3809D-3: Similar to UCC3809D-2G4, but with additional features such as synchronization capability.
  3. UCC3809D-4: Similar to UCC3809D-2G4, but optimized for specific applications like automotive power systems.

These alternative models offer similar functionality with slight variations to cater to specific design needs.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC3809D-2G4 i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC3809D-2G4 in technical solutions:

  1. Q: What is UCC3809D-2G4? A: UCC3809D-2G4 is a high-performance current-mode PWM controller used in various power supply applications.

  2. Q: What are the key features of UCC3809D-2G4? A: Some key features include adjustable frequency operation, cycle-by-cycle current limiting, soft-start capability, and integrated error amplifier.

  3. Q: What is the typical input voltage range for UCC3809D-2G4? A: The typical input voltage range is between 7V and 25V.

  4. Q: Can UCC3809D-2G4 be used in both buck and boost converter topologies? A: Yes, UCC3809D-2G4 can be used in both buck and boost converter topologies.

  5. Q: How does UCC3809D-2G4 provide overcurrent protection? A: UCC3809D-2G4 provides overcurrent protection through its cycle-by-cycle current limiting feature.

  6. Q: Is UCC3809D-2G4 suitable for high-frequency switching applications? A: Yes, UCC3809D-2G4 is suitable for high-frequency switching applications as it supports adjustable frequency operation.

  7. Q: Can UCC3809D-2G4 operate in continuous conduction mode (CCM)? A: Yes, UCC3809D-2G4 can operate in continuous conduction mode.

  8. Q: Does UCC3809D-2G4 have built-in soft-start capability? A: Yes, UCC3809D-2G4 has built-in soft-start capability to limit inrush current during startup.

  9. Q: What is the maximum duty cycle supported by UCC3809D-2G4? A: The maximum duty cycle supported by UCC3809D-2G4 is typically 90%.

  10. Q: Can UCC3809D-2G4 be used in battery-powered applications? A: Yes, UCC3809D-2G4 can be used in battery-powered applications as it operates within a wide input voltage range.

Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.