, , ,

UC3843 IC – (SMD SOP-14 Package) – Current-Mode PWM Controller 14 Pin IC

Availability:

1000 In stock


35.00 (excluding 18% GST)

1000 In stock

Compare

Description

The UC3843 is a Current-Mode PWM Controller IC, primarily used for switching power supply applications such as DC-DC converters, AC-DC converters, and other types of power regulation circuits. This IC offers a flexible and high-performance solution for controlling power conversion systems efficiently.

Specifications

  • Input Voltage (Vcc): 8V to 30V
  • Output Duty Cycle: 0% to 100%
  • Oscillator Frequency: Adjustable from 100kHz to 500kHz
  • Maximum Output Current: 1A (Peak)
  • Output Stage: Open collector output (for external MOSFET driver)
  • Operating Temperature: -40°C to +85°C
  • Feedback Pin (Pin 3): For current-mode control and error signal input
  • Dead-Time Control: Built-in dead-time control to prevent crossover distortion in high-efficiency systems.
  • Overcurrent Protection: Provides internal current sensing for overcurrent protection and pulse-by-pulse current limiting.
  • Internal Error Amplifier: Integrated error amplifier with voltage feedback for system regulation.
  • Soft Start: Built-in soft-start function to prevent large inrush currents during startup.

Features

  • Current-Mode Control: Provides precise regulation and stability in switching power supplies, with enhanced transient response and improved noise immunity.
  • Adjustable Oscillator Frequency: The switching frequency can be adjusted via an external timing resistor, offering flexibility to optimize for specific applications.
  • Low Start-up Current: Typically consumes low current in startup mode, which is advantageous for energy-efficient designs.
  • Integrated Error Amplifier: Offers an integrated error amplifier for voltage feedback, simplifying the design process and reducing component count.
  • Pulse-by-Pulse Current Limiting: Includes internal current sensing for detecting overcurrent conditions, ensuring safe operation and protecting against overloads.
  • Soft Start Feature: Gradually ramps up the output voltage to avoid high inrush current and reduce stress on components.
  • Low Quiescent Current: The device has a low quiescent current in normal operation, which is beneficial for power conservation in low-power designs.
  • High-Speed Operation: Capable of fast response times, making it suitable for high-frequency switching applications.
  • Wide Input Voltage Range: Supports a wide input voltage range (8V to 30V), making it compatible with a variety of power sources.
  • Thermal Shutdown: Includes thermal shutdown protection, preventing the IC from overheating and ensuring long-term reliability.

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

Based on 0 reviews

0.0 overall
0
0
0
0
0

Be the first to review “UC3843 IC – (SMD SOP-14 Package) – Current-Mode PWM Controller 14 Pin IC”

5 × five =

There are no reviews yet.

0
    0
    Your Cart
    Your cart is emptyReturn to Shop