Texas Instruments
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UC3825DW
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UC3825DW

Product Overview

Category

The UC3825DW belongs to the category of PWM (Pulse Width Modulation) controllers.

Use

It is commonly used in power supply and motor control applications.

Characteristics

  • High efficiency
  • Wide input voltage range
  • Precise duty cycle control

Package

The UC3825DW comes in a standard 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

This device is essential for controlling the switching frequency and duty cycle of power converters.

Packaging/Quantity

The UC3825DW is typically available in reels with a quantity of 250 units per reel.

Specifications

  • Input Voltage Range: 10V to 20V
  • Output Voltage Range: 0V to 15V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Duty Cycle: 50%
  • Oscillator Frequency Range: 100kHz to 500kHz

Detailed Pin Configuration

  1. VREF
  2. COMP
  3. RT/CT
  4. GND
  5. SD
  6. CS
  7. SS/TR
  8. VCC
  9. OSC
  10. OUT
  11. RT/CT
  12. CT/RT
  13. RT/CT
  14. GND
  15. VFB
  16. VSENSE

Functional Features

  • Error Amplifier
  • Oscillator
  • PWM Comparator
  • Soft Start
  • Current Sense

Advantages and Disadvantages

Advantages

  • Precise control over duty cycle
  • Wide input voltage range
  • High efficiency

Disadvantages

  • Limited maximum duty cycle
  • Requires external components for operation

Working Principles

The UC3825DW operates by comparing the feedback voltage from the power converter with a reference voltage, and then adjusting the duty cycle of the PWM signal to regulate the output voltage.

Detailed Application Field Plans

The UC3825DW is widely used in: - Switched-mode power supplies - Motor control circuits - DC-DC converters - Inverters

Detailed and Complete Alternative Models

Some alternative models to the UC3825DW include: - UC3823 - UC3824 - UC3826 - SG3525

In conclusion, the UC3825DW is a versatile PWM controller that offers precise control over duty cycle and is commonly used in various power supply and motor control applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UC3825DW v technických řešeních

  1. What is the UC3825DW?

    • The UC3825DW is a high-speed PWM controller used in power supply applications.

  2. What is the input voltage range for UC3825DW?

    • The typical input voltage range for UC3825DW is 8V to 35V.

  3. What is the maximum output current it can handle?

    • The UC3825DW can handle a maximum output current of up to 1A.

  4. What are the typical applications of UC3825DW?

    • Typical applications include DC-DC converters, power inverters, and motor control circuits.

  5. What is the switching frequency of UC3825DW?

    • The switching frequency of UC3825DW is typically adjustable from 50kHz to 1MHz.

  6. Does UC3825DW have built-in protection features?

    • Yes, it has built-in features such as overcurrent protection and thermal shutdown.

  7. What type of feedback does UC3825DW support?

    • It supports voltage mode feedback for regulating the output voltage.

  8. Can UC3825DW be used in automotive applications?

    • Yes, it can be used in automotive applications with proper design considerations.

  9. What is the operating temperature range for UC3825DW?

    • The operating temperature range is typically -40°C to 105°C.

  10. Is there a reference design available for UC3825DW?

    • Yes, many manufacturers provide reference designs and application notes for using UC3825DW in various technical solutions.