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E-UC2842BN
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E-UC2842BN

Product Overview

Category

E-UC2842BN belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications, specifically for controlling switch-mode power supplies.

Characteristics

  • E-UC2842BN is a high-performance current mode PWM controller.
  • It operates at a fixed frequency and provides precise control over the output voltage.
  • The device offers protection features such as cycle-by-cycle current limiting and thermal shutdown.
  • It is designed to work with both low-power and high-power applications.

Package

E-UC2842BN is available in a standard 8-pin dual in-line package (DIP).

Essence

The essence of E-UC2842BN lies in its ability to regulate and control the output voltage of switch-mode power supplies efficiently.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

  • Input Voltage Range: 7V to 30V
  • Output Voltage Range: 0V to 5.1V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Duty Cycle: 100%
  • Oscillator Frequency: 50kHz to 500kHz

Detailed Pin Configuration

  1. VREF: Reference voltage input
  2. COMP: Error amplifier output
  3. FB: Feedback pin for regulating the output voltage
  4. GND: Ground reference
  5. RT/CT: Timing resistor/capacitor connection
  6. CT: Timing capacitor connection
  7. OUT: Output pin
  8. VCC: Power supply input

Functional Features

  • Current mode control for improved stability and transient response.
  • Adjustable frequency operation for flexibility in different applications.
  • Soft-start function to prevent excessive inrush current during startup.
  • Error amplifier with high gain and low offset voltage for accurate regulation.
  • Overcurrent protection to safeguard the circuit from excessive current flow.

Advantages and Disadvantages

Advantages

  • High-performance PWM controller for efficient power management.
  • Wide input voltage range allows for versatile applications.
  • Protection features ensure safe operation under various conditions.
  • Compact package size facilitates easy integration into designs.

Disadvantages

  • Limited output voltage range may not be suitable for certain applications requiring higher voltages.
  • Fixed frequency operation may restrict flexibility in specific scenarios.

Working Principles

E-UC2842BN operates based on the current mode control technique. It compares the feedback voltage (FB) with a reference voltage (VREF) to generate an error signal. This error signal is then amplified by the internal error amplifier (COMP) and used to adjust the duty cycle of the PWM signal. By modulating the duty cycle, the controller regulates the output voltage according to the desired setpoint. The timing resistor (RT) and timing capacitor (CT) connected to the RT/CT pin determine the oscillator frequency and the switching period of the PWM signal.

Detailed Application Field Plans

E-UC2842BN finds extensive application in various power supply systems, including:

  1. Switch-mode power supplies for consumer electronics.
  2. Industrial power converters and inverters.
  3. LED lighting drivers.
  4. Battery charging circuits.
  5. Automotive power management systems.

Detailed and Complete Alternative Models

  1. E-UC3842BN: Similar to E-UC2842BN but with extended input voltage range.
  2. E-UC2742BN: Lower-power version of E-UC2842BN with reduced current handling capability.
  3. E-UC2942BN: Higher-power variant of E-UC2842BN with increased current handling capacity.

These alternative models offer similar functionality and can be considered as substitutes based on specific requirements.

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10 domande e risposte comuni relative all'applicazione di E-UC2842BN nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of E-UC2842BN in technical solutions:

  1. Q: What is the E-UC2842BN? A: The E-UC2842BN is a specific model of integrated circuit (IC) used for controlling power supply circuits.

  2. Q: What are the main features of the E-UC2842BN? A: The E-UC2842BN features include high-frequency operation, adjustable frequency, soft-start capability, and protection features like overcurrent and overvoltage protection.

  3. Q: How can I use the E-UC2842BN in my technical solution? A: The E-UC2842BN can be used as a controller in various power supply applications, such as switch-mode power supplies (SMPS), LED drivers, and battery chargers.

  4. Q: What is the input voltage range supported by the E-UC2842BN? A: The E-UC2842BN typically supports an input voltage range of 7V to 30V.

  5. Q: Can the E-UC2842BN handle high currents? A: The E-UC2842BN itself is not designed to handle high currents directly. It is primarily used for control purposes and requires external power devices to handle higher currents.

  6. Q: How do I adjust the output voltage using the E-UC2842BN? A: The output voltage can be adjusted by modifying the feedback network connected to the E-UC2842BN. This usually involves changing resistor values or using a potentiometer.

  7. Q: Does the E-UC2842BN have any built-in protection features? A: Yes, the E-UC2842BN includes protection features like overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown.

  8. Q: Can the E-UC2842BN operate at high frequencies? A: Yes, the E-UC2842BN is designed to operate at high frequencies, typically in the range of tens to hundreds of kilohertz.

  9. Q: Are there any application notes or reference designs available for the E-UC2842BN? A: Yes, the manufacturer of the E-UC2842BN usually provides application notes and reference designs that can help you understand and implement the IC in your technical solution.

  10. Q: Where can I purchase the E-UC2842BN? A: The E-UC2842BN can be purchased from various electronic component distributors, both online and offline. It is advisable to check with authorized distributors or the manufacturer's website for reliable sources.