Texas Instruments
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UC2865N
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UC2865N

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance PWM Controller
  • Package: DIP-8 (Dual In-line Package)
  • Essence: Regulates and controls power delivery in various applications
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Input Voltage Range: 10V to 20V
  • Output Voltage Range: 0V to 15V
  • Maximum Output Current: 2A
  • Operating Temperature Range: -40°C to 85°C
  • Frequency Range: 50kHz to 500kHz

Detailed Pin Configuration

  1. VCC: Power supply input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback control
  4. CS: Current sense input
  5. RT/CT: Timing components connection
  6. OUT: Output voltage
  7. SYNC: Synchronization input
  8. FB: Feedback input for voltage regulation

Functional Features

  • High-performance pulse-width modulation (PWM) controller
  • Provides precise control over power delivery
  • Adjustable frequency and duty cycle
  • Overcurrent protection
  • Soft-start function for smooth power-up
  • External synchronization capability

Advantages

  • Efficient power management
  • Wide input voltage range
  • Flexible frequency and duty cycle adjustment
  • Reliable overcurrent protection
  • Smooth power-up with soft-start function
  • Synchronization capability for multi-device operation

Disadvantages

  • Limited maximum output current (2A)
  • Restricted operating temperature range (-40°C to 85°C)
  • Requires external timing components for frequency control

Working Principles

The UC2865N is a high-performance PWM controller that regulates power delivery in various applications. It operates by adjusting the duty cycle of the output waveform based on the feedback received from the COMP and FB pins. By controlling the switching frequency and duty cycle, the UC2865N ensures efficient power transfer while maintaining voltage regulation.

Detailed Application Field Plans

The UC2865N is widely used in power management applications such as:

  1. Switching Power Supplies: Provides precise control over output voltage and current in AC-DC and DC-DC converters.
  2. LED Lighting: Enables efficient and dimmable LED driver circuits.
  3. Motor Control: Facilitates speed and torque control in motor drive systems.
  4. Battery Charging: Regulates charging current and voltage in battery charging circuits.
  5. Audio Amplifiers: Ensures stable power supply for audio amplification circuits.

Detailed and Complete Alternative Models

  1. UC3845N: Similar high-performance PWM controller with extended operating temperature range (-40°C to 105°C).
  2. TL494CN: PWM controller with adjustable frequency and duty cycle, suitable for various power management applications.
  3. SG3525AN: PWM controller with built-in error amplifier and oscillator, ideal for power supply and motor control applications.

(Note: This entry has a total of 446 words)

10 pirs û bersivên hevpar ên têkildarî sepana UC2865N di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of UC2865N in technical solutions:

  1. Q: What is UC2865N? A: UC2865N is a pulse width modulation (PWM) controller IC used in power supply applications.

  2. Q: What are the main features of UC2865N? A: UC2865N offers adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.

  3. Q: What is the typical input voltage range for UC2865N? A: The typical input voltage range for UC2865N is between 8V and 35V.

  4. Q: How does UC2865N regulate the output voltage? A: UC2865N uses a feedback loop to regulate the output voltage by adjusting the duty cycle of the PWM signal.

  5. Q: Can UC2865N handle high currents? A: Yes, UC2865N can handle high currents by using an external power MOSFET or bipolar transistor.

  6. Q: Is UC2865N suitable for both step-up and step-down converter designs? A: Yes, UC2865N can be used in both step-up (boost) and step-down (buck) converter designs.

  7. Q: Does UC2865N have built-in protection features? A: Yes, UC2865N has built-in protection features such as overcurrent protection and thermal shutdown.

  8. Q: Can UC2865N operate in a wide temperature range? A: Yes, UC2865N can operate in a temperature range of -40°C to +85°C.

  9. Q: What is the maximum switching frequency of UC2865N? A: The maximum switching frequency of UC2865N is typically 500kHz.

  10. Q: Are there any application notes or reference designs available for UC2865N? A: Yes, the manufacturer provides application notes and reference designs that can help in implementing UC2865N in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and consult with the manufacturer for detailed information.