ON Semiconductor
Kuva saattaa olla esitys.
Katso tuotteen tekniset tiedot.
NCP1239FDR2G
Näytä Yksityiskohdat DataSheets

NCP1239FDR2G

Product Overview

Category

NCP1239FDR2G belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various electronic devices and systems to regulate and control power supply, ensuring efficient and reliable operation.

Characteristics

  • High efficiency: The NCP1239FDR2G offers high conversion efficiency, minimizing power losses during voltage regulation.
  • Wide input voltage range: It can handle a broad range of input voltages, making it suitable for diverse applications.
  • Protection features: The IC incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown, enhancing system safety and reliability.

Package

The NCP1239FDR2G is available in a compact and industry-standard package known as SOIC-8 (Small Outline Integrated Circuit), which facilitates easy integration into circuit boards.

Essence

The essence of NCP1239FDR2G lies in its ability to efficiently regulate and control power supply, ensuring stable and reliable operation of electronic devices.

Packaging/Quantity

The NCP1239FDR2G is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications and customer requirements.

Specifications

  • Input Voltage Range: 7V to 25V
  • Output Voltage Range: 3.3V to 5V
  • Maximum Output Current: 1A
  • Switching Frequency: 65kHz to 115kHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NCP1239FDR2G has eight pins arranged as follows:

  1. VCC: Power supply input pin.
  2. GND: Ground reference pin.
  3. FB: Feedback pin for voltage regulation.
  4. COMP: Compensation pin for stability control.
  5. CS: Current sense pin for overcurrent protection.
  6. SS/EN: Soft-start or enable pin.
  7. DRAIN: Switching transistor drain pin.
  8. VCCSENSE: Voltage sensing pin.

Functional Features

  • Voltage Regulation: The NCP1239FDR2G provides precise voltage regulation, ensuring a stable output voltage regardless of input variations.
  • Overcurrent Protection: It incorporates current sensing mechanisms to detect and protect against excessive current flow, preventing damage to the IC and connected devices.
  • Soft-Start Functionality: The soft-start feature gradually ramps up the output voltage during startup, reducing stress on components and improving system reliability.
  • Thermal Shutdown: In case of excessive temperature, the IC automatically shuts down to prevent overheating and potential damage.

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power consumption and improved energy efficiency.
  • Wide input voltage range allows for versatile applications.
  • Comprehensive protection features enhance system safety and reliability.
  • Compact package facilitates easy integration into circuit boards.

Disadvantages

  • Limited maximum output current may restrict its use in high-power applications.
  • Relatively low switching frequency compared to some alternative models may affect performance in certain scenarios.

Working Principles

The NCP1239FDR2G operates based on a pulse width modulation (PWM) technique. It regulates the output voltage by controlling the duty cycle of the internal switching transistor. By continuously monitoring the feedback voltage, the IC adjusts the duty cycle to maintain the desired output voltage.

Detailed Application Field Plans

The NCP1239FDR2G finds application in various fields, including but not limited to: - Power supplies for consumer electronics - Industrial automation systems - LED lighting systems - Automotive electronics - Telecommunications equipment

Detailed and Complete Alternative Models

  • NCP1239FCT2G
  • NCP1239D65R2G
  • NCP1239D100R2G
  • NCP1239D133R2G
  • NCP1239D165R2G

These alternative models offer similar functionality and characteristics to the NCP1239FDR2G, providing flexibility in choosing the most suitable IC for specific applications.

Word count: 529 words

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät NCP1239FDR2G :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of NCP1239FDR2G in technical solutions:

  1. Q: What is NCP1239FDR2G? A: NCP1239FDR2G is a high-performance, fixed-frequency current-mode controller IC used in offline power supplies.

  2. Q: What are the key features of NCP1239FDR2G? A: Some key features include integrated high-voltage startup, frequency jittering for EMI reduction, built-in protections, and a wide input voltage range.

  3. Q: What is the typical application of NCP1239FDR2G? A: NCP1239FDR2G is commonly used in applications such as LED lighting, power adapters, and auxiliary power supplies.

  4. Q: What is the maximum operating frequency of NCP1239FDR2G? A: The maximum operating frequency of NCP1239FDR2G is typically around 100 kHz.

  5. Q: Does NCP1239FDR2G support primary-side regulation (PSR)? A: Yes, NCP1239FDR2G supports primary-side regulation, which eliminates the need for an optocoupler and secondary feedback circuitry.

  6. Q: What are the protection features offered by NCP1239FDR2G? A: NCP1239FDR2G provides various protection features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  7. Q: Can NCP1239FDR2G operate in a wide input voltage range? A: Yes, NCP1239FDR2G can operate in a wide input voltage range, typically from 85V to 265V AC.

  8. Q: Does NCP1239FDR2G have built-in soft-start functionality? A: Yes, NCP1239FDR2G has a built-in soft-start feature that helps reduce inrush current during startup.

  9. Q: What is the output power range supported by NCP1239FDR2G? A: NCP1239FDR2G can support output power ranging from a few watts up to several tens of watts, depending on the application and design.

  10. Q: Is NCP1239FDR2G RoHS compliant? A: Yes, NCP1239FDR2G is RoHS (Restriction of Hazardous Substances) compliant, ensuring it meets environmental regulations.

Please note that these answers are general and may vary based on specific datasheet specifications and application requirements.