Texas Instruments
L'image peut être une représentation.
Voir les spécifications pour les détails du produit.
UCC3807D-2
Voir les détails DataSheets

UCC3807D-2

Product Overview

Category

UCC3807D-2 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • High efficiency
  • Low standby power consumption
  • Wide input voltage range
  • Protection features against overvoltage and overcurrent

Package

UCC3807D-2 is available in a standard 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of UCC3807D-2 lies in its ability to efficiently regulate and control power in various electronic systems.

Packaging/Quantity

UCC3807D-2 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 4.5V to 25V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Output Current: 500mA
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VDD: Power supply input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback loop
  4. FB: Feedback pin for output voltage regulation
  5. CS: Current sense input for current limiting
  6. RT/CT: Timing components for oscillator frequency control
  7. OUT: Output pin for regulated voltage
  8. SS/TR: Soft-start and shutdown control pin

Functional Features

  • Voltage mode control for stable regulation
  • Adjustable soft-start time for controlled startup
  • Overvoltage protection for safe operation
  • Cycle-by-cycle current limiting for fault protection
  • Error amplifier for precise voltage regulation
  • Oscillator with external timing components for frequency control

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power consumption
  • Wide input voltage range allows for versatile applications
  • Protection features ensure safe operation
  • Compact package size enables space-saving designs

Disadvantages

  • Limited maximum output current may restrict certain high-power applications
  • External timing components required for frequency control may increase complexity

Working Principles

UCC3807D-2 operates on the principle of voltage mode control. It compares the feedback voltage (FB) with a reference voltage to regulate the output voltage. The error amplifier amplifies the difference between these voltages and adjusts the duty cycle of the internal PWM (Pulse Width Modulation) controller accordingly. This controls the switching of the power MOSFET, which in turn regulates the output voltage.

Detailed Application Field Plans

UCC3807D-2 finds application in various power management systems, including but not limited to: - Switching power supplies - Battery chargers - LED drivers - Industrial automation equipment - Telecommunications devices

Detailed and Complete Alternative Models

  1. UCC3807D-1: Similar to UCC3807D-2, but with a different pin configuration.
  2. UCC3807D-3: Enhanced version with additional protection features.
  3. UCC3807D-4: Higher output current variant for more demanding applications.

These alternative models offer similar functionality and can be considered as substitutes for UCC3807D-2 depending on specific requirements.

Word count: 520 words

Énumérez 10 questions et réponses courantes liées à l'application de UCC3807D-2 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of UCC3807D-2 in technical solutions:

  1. Q: What is UCC3807D-2? A: UCC3807D-2 is a high-performance current-mode PWM controller used in various power supply applications.

  2. Q: What are the key features of UCC3807D-2? A: Some key features include adjustable frequency operation, cycle-by-cycle current limiting, soft-start capability, and low-power standby mode.

  3. Q: How does UCC3807D-2 help in power supply designs? A: UCC3807D-2 provides precise control over power supply output voltage and current, ensuring stable and efficient operation.

  4. Q: Can UCC3807D-2 be used in both AC and DC power supplies? A: Yes, UCC3807D-2 can be used in both AC and DC power supply designs, making it versatile for various applications.

  5. Q: What is cycle-by-cycle current limiting? A: Cycle-by-cycle current limiting is a feature that protects the power supply by monitoring and limiting the current flowing through it on a per-cycle basis.

  6. Q: How can I adjust the operating frequency of UCC3807D-2? A: The operating frequency can be adjusted by changing the value of an external resistor connected to the RT pin of UCC3807D-2.

  7. Q: Does UCC3807D-2 have any protection features? A: Yes, UCC3807D-2 includes features like overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown to protect the power supply and the controller itself.

  8. Q: Can UCC3807D-2 be used in high-power applications? A: Yes, UCC3807D-2 can be used in high-power applications by appropriately selecting external components and ensuring proper thermal management.

  9. Q: What is the standby mode of UCC3807D-2? A: The standby mode is a low-power state in which UCC3807D-2 consumes minimal current when the power supply is not actively delivering power.

  10. Q: Are there any application notes or reference designs available for UCC3807D-2? A: Yes, Texas Instruments provides application notes and reference designs that showcase the implementation of UCC3807D-2 in various power supply applications. These resources can be found on their website.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and relevant documentation for accurate information.