ON Semiconductor
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FAN4803CS2X
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FAN4803CS2X

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Power Consumption
  • Package: SOP-8 (Small Outline Package)
  • Essence: Voltage Mode PWM Controller
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 9V to 30V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Duty Cycle: 100%
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The FAN4803CS2X has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback control loop
  4. CS: Current sense input for overcurrent protection
  5. FB: Feedback voltage input for output regulation
  6. RT/CT: Timing components connection for frequency adjustment
  7. SS/TR: Soft-start and shutdown control pin
  8. OUT: Output voltage

Functional Features

  • Voltage mode control with adjustable output voltage
  • Overcurrent protection with current sensing
  • Soft-start and shutdown control for smooth operation
  • Wide input voltage range for versatile applications
  • High efficiency and low power consumption

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for flexibility in power sources - Adjustable output voltage provides customization options - Overcurrent protection ensures safe operation

Disadvantages: - Limited maximum duty cycle may restrict certain applications - Requires external timing components for frequency adjustment

Working Principles

The FAN4803CS2X is a voltage mode PWM controller that regulates the output voltage based on the feedback received. It operates by comparing the feedback voltage (FB) with a reference voltage to generate an error signal. This error signal is then amplified and used to control the duty cycle of the output waveform, which in turn adjusts the output voltage.

The controller also incorporates overcurrent protection by monitoring the current sense input (CS). If the current exceeds a certain threshold, the controller reduces the duty cycle to limit the output current and prevent damage to the circuit.

Detailed Application Field Plans

The FAN4803CS2X is commonly used in various power management applications, including:

  1. DC-DC Converters: The controller's adjustable output voltage and wide input voltage range make it suitable for use in DC-DC converters, enabling efficient power conversion in different systems.
  2. LED Lighting: With its high efficiency and low power consumption, the FAN4803CS2X is ideal for driving LED lighting systems, ensuring optimal energy usage and longer lifespan.
  3. Battery Chargers: The controller's voltage regulation capabilities make it suitable for battery charging applications, providing stable and controlled charging currents.
  4. Industrial Power Supplies: The FAN4803CS2X can be utilized in industrial power supplies to ensure reliable and efficient power delivery in demanding environments.

Detailed and Complete Alternative Models

  1. FAN4800CS2X: Similar voltage mode PWM controller with adjustable output voltage and overcurrent protection. Package: SOP-8.
  2. FAN4802CS2X: Voltage mode PWM controller with adjustable output voltage, overcurrent protection, and integrated soft-start functionality. Package: SOP-8.
  3. FAN4805CS2X: Voltage mode PWM controller with adjustable output voltage, overcurrent protection, and wider input voltage range. Package: SOP-8.

(Note: These alternative models are provided as examples and may not cover all available options.)

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق FAN4803CS2X في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of FAN4803CS2X in technical solutions:

  1. Q: What is FAN4803CS2X? A: FAN4803CS2X is a high-performance, current-mode PWM controller designed for offline and DC-DC converter applications.

  2. Q: What are the key features of FAN4803CS2X? A: Some key features include adjustable switching frequency, programmable soft-start, cycle-by-cycle current limiting, and overvoltage protection.

  3. Q: What is the typical input voltage range for FAN4803CS2X? A: The typical input voltage range is from 8V to 20V.

  4. Q: Can FAN4803CS2X be used in both offline and DC-DC converter applications? A: Yes, FAN4803CS2X is designed to be used in both offline and DC-DC converter applications.

  5. Q: How can I adjust the switching frequency of FAN4803CS2X? A: The switching frequency can be adjusted by connecting an external resistor and capacitor to the RT/CT pins.

  6. Q: Does FAN4803CS2X have any protection features? A: Yes, FAN4803CS2X has built-in overvoltage protection and cycle-by-cycle current limiting for enhanced system reliability.

  7. Q: Can FAN4803CS2X operate in a wide temperature range? A: Yes, FAN4803CS2X is designed to operate in a wide temperature range, typically from -40°C to +125°C.

  8. Q: Is FAN4803CS2X compatible with low-power standby mode? A: Yes, FAN4803CS2X supports low-power standby mode for energy-efficient operation.

  9. Q: Can I use FAN4803CS2X in high-frequency applications? A: Yes, FAN4803CS2X is suitable for high-frequency applications due to its adjustable switching frequency capability.

  10. Q: What package options are available for FAN4803CS2X? A: FAN4803CS2X is available in a compact 8-pin SOIC package for easy integration into various technical solutions.

Please note that these answers are general and may vary depending on the specific application and requirements.