Texas Instruments
Kuva saattaa olla esitys.
Katso tuotteen tekniset tiedot.
UC2838ANG4
Näytä Yksityiskohdat DataSheets

UC2838ANG4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance PWM Controller
  • Package: DIP-16 (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 40V
  • Output Voltage Range: 0V to 37V
  • Maximum Output Current: 5A
  • Switching Frequency: 100kHz to 500kHz
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

  1. VCC: Power supply input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback loop
  4. CS: Current sense input
  5. RT/CT: Timing components connection
  6. SYNC: Synchronization input
  7. SS/TR: Soft-start and tracking control
  8. FB: Feedback voltage input
  9. INV: Inverting input of error amplifier
  10. EAOUT: Error amplifier output
  11. OSC: Oscillator timing capacitor connection
  12. CT/RT: Timing components connection
  13. OUT: Power switch output
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

  • High-efficiency power conversion
  • Wide input voltage range
  • Adjustable output voltage
  • Overcurrent protection
  • Overtemperature protection
  • Soft-start capability
  • Synchronization with external clock

Advantages and Disadvantages

Advantages: - High-performance PWM controller - Versatile application range - Efficient power management - Robust protection features

Disadvantages: - Limited maximum output current - Requires external timing components - Not suitable for high-frequency applications

Working Principles

The UC2838ANG4 is a high-performance PWM controller that regulates power delivery in various applications. It utilizes a feedback loop to maintain the desired output voltage by adjusting the duty cycle of the power switch. The error amplifier compares the feedback voltage with a reference voltage and generates an error signal, which is then used to control the power switch. By modulating the duty cycle, the controller adjusts the average output voltage.

Detailed Application Field Plans

The UC2838ANG4 is commonly used in the following applications:

  1. Switching Power Supplies: Provides efficient power conversion in AC-DC and DC-DC converters.
  2. Battery Chargers: Controls the charging process and protects the battery from overcharging.
  3. LED Lighting: Regulates the current flow to ensure stable and efficient operation of LED lights.
  4. Motor Control: Manages the power delivery to motors, enabling precise speed and torque control.
  5. Audio Amplifiers: Controls the power supply for audio amplification circuits, ensuring clean and reliable sound reproduction.

Detailed and Complete Alternative Models

  1. UC3842AN: Similar functionality with different pin configuration.
  2. LM2576T-ADJ: Step-down switching regulator with adjustable output voltage.
  3. LT1073CS8: Micropower DC-DC converter with integrated Schottky diode.

These alternative models offer similar features and can be considered as substitutes for the UC2838ANG4 in specific applications.

Word count: 413 words

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät UC2838ANG4 :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of UC2838ANG4 in technical solutions:

  1. Q: What is UC2838ANG4? A: UC2838ANG4 is a high-performance, current-mode PWM controller designed for various power supply applications.

  2. Q: What are the key features of UC2838ANG4? A: Some key features include wide input voltage range, adjustable frequency operation, cycle-by-cycle current limiting, and built-in soft-start function.

  3. Q: What is the typical application of UC2838ANG4? A: UC2838ANG4 is commonly used in switch-mode power supplies (SMPS), such as offline flyback converters, forward converters, and boost converters.

  4. Q: How does UC2838ANG4 help in power supply designs? A: UC2838ANG4 provides precise control over the power supply's output voltage and current, ensuring stable and efficient operation.

  5. Q: Can UC2838ANG4 handle high input voltages? A: Yes, UC2838ANG4 has a wide input voltage range, typically up to 100V, making it suitable for applications with higher input voltages.

  6. Q: Does UC2838ANG4 support adjustable switching frequency? A: Yes, UC2838ANG4 allows users to adjust the switching frequency according to their specific requirements, providing flexibility in design.

  7. Q: How does UC2838ANG4 ensure safe operation? A: UC2838ANG4 incorporates cycle-by-cycle current limiting, which protects the power supply from excessive currents and prevents damage.

  8. Q: Can UC2838ANG4 be used in battery-powered applications? A: Yes, UC2838ANG4 can be used in battery-powered applications as it supports a wide input voltage range and offers efficient power conversion.

  9. Q: Does UC2838ANG4 have any protection features? A: Yes, UC2838ANG4 includes features like overvoltage protection (OVP) and thermal shutdown to safeguard the power supply and the controller itself.

  10. Q: Are there any reference designs available for UC2838ANG4? A: Yes, Texas Instruments provides reference designs and application notes that can help in implementing UC2838ANG4 in various power supply designs.

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