Texas Instruments
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UC2875N
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UC2875N

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance PWM Controller
  • Package: DIP-16 (Dual In-Line Package with 16 pins)
  • Essence: Regulates and controls power delivery in various applications
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Input Voltage: 10V to 20V
  • Output Voltage: Adjustable, up to 90% of input voltage
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature: -40°C to +85°C
  • Features: Soft-start, Overcurrent Protection, Undervoltage Lockout

Pin Configuration

The UC2875N IC has the following 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. REF: Reference voltage output
  7. FB: Feedback pin for voltage regulation
  8. INV: Output stage inverter input
  9. OSC: Oscillator timing capacitor connection
  10. SYNC: Synchronization input
  11. SS/TR: Soft-start and shutdown control
  12. UVLO: Undervoltage lockout input
  13. SD: Shutdown control input
  14. OUT: Output voltage
  15. DRV: Gate driver output
  16. VREF: Reference voltage input

Functional Features

  • High Efficiency: The UC2875N offers high efficiency power conversion due to its advanced control algorithms.
  • Wide Input Voltage Range: It can operate within a wide input voltage range, making it suitable for various applications.
  • Flexible Output Voltage: The output voltage can be adjusted to meet specific requirements.
  • Protection Mechanisms: The IC incorporates overcurrent protection and undervoltage lockout features to ensure safe operation.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Adjustable output voltage - Built-in protection mechanisms

Disadvantages: - Limited maximum switching frequency - Requires external timing components for operation

Working Principles

The UC2875N is a pulse width modulation (PWM) controller that regulates the power delivery in various applications. It operates by controlling the duty cycle of the output waveform based on feedback from the output voltage. By adjusting the duty cycle, the IC maintains a stable output voltage even with varying input conditions.

Application Field Plans

The UC2875N is commonly used in the following applications:

  1. Switching Power Supplies: It is widely employed in switch-mode power supplies to regulate and control the power delivery efficiently.
  2. LED Lighting: The IC can be utilized in LED lighting systems to provide accurate voltage regulation and dimming capabilities.
  3. Motor Control: It finds application in motor control circuits where precise power management is required.
  4. Battery Charging: The UC2875N can be used in battery charging circuits to ensure efficient and controlled charging.

Alternative Models

Here are some alternative models that offer similar functionality:

  1. UC3845N
  2. TL494CN
  3. SG3525AN
  4. IRS2153D

These alternatives can be considered based on specific requirements and availability.

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10 pirs û bersivên hevpar ên têkildarî sepana UC2875N di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of UC2875N in technical solutions:

  1. Q: What is UC2875N? A: UC2875N is a high-performance pulse width modulation (PWM) controller IC commonly used in power supply applications.

  2. Q: What are the key features of UC2875N? A: UC2875N offers features like adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.

  3. Q: How does UC2875N help in power supply designs? A: UC2875N provides precise control over the switching frequency and duty cycle, enabling efficient power conversion and regulation.

  4. Q: Can UC2875N be used in both AC-DC and DC-DC power supplies? A: Yes, UC2875N can be used in both AC-DC and DC-DC power supply designs, making it versatile for various applications.

  5. Q: What is the maximum operating voltage range of UC2875N? A: UC2875N has a wide input voltage range, typically up to 100V, allowing it to handle a variety of power supply requirements.

  6. Q: Does UC2875N support synchronization with an external clock? A: Yes, UC2875N supports synchronization with an external clock, which can be useful in multi-phase power supply designs.

  7. Q: Can UC2875N handle high current loads? A: UC2875N itself is a controller IC and cannot handle high current loads directly. It requires external power devices such as MOSFETs or IGBTs to handle high currents.

  8. Q: How does UC2875N protect against overvoltage conditions? A: UC2875N has built-in overvoltage protection (OVP) circuitry that monitors the output voltage and shuts down the power supply if it exceeds a certain threshold.

  9. Q: Is UC2875N suitable for low-power applications? A: While UC2875N is capable of handling high-power applications, it can also be used in low-power designs by selecting appropriate external components.

  10. Q: Are there any application notes or reference designs available for UC2875N? A: Yes, the manufacturer of UC2875N typically provides application notes and reference designs that can help engineers in implementing the IC effectively in their designs.

Please note that the answers provided here are general and may vary depending on specific design requirements and application considerations.