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NCP1246BLD100R2G
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NCP1246BLD100R2G

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High voltage startup - Current mode control - Frequency jittering for EMI reduction - Built-in protection features - Low standby power consumption

Package: DFN-8 (Dual Flat No-Lead)

Essence: The NCP1246BLD100R2G is a highly integrated IC designed for power management applications. It offers high voltage startup, current mode control, and various built-in protection features.

Packaging/Quantity: The NCP1246BLD100R2G is available in a DFN-8 package. The quantity may vary depending on the supplier.

Specifications

  • Input Voltage Range: 9V to 38V
  • Output Voltage Range: 5V to 24V
  • Maximum Output Current: 700mA
  • Switching Frequency: 65kHz to 115kHz
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The NCP1246BLD100R2G has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for stability control
  5. CS: Current sense input
  6. SS: Soft-start pin for controlled startup
  7. DRAIN: High-voltage power switch output
  8. VDD: Internal bias voltage supply

Functional Features

  • High voltage startup enables operation in wide input voltage range.
  • Current mode control provides excellent line and load regulation.
  • Frequency jittering reduces electromagnetic interference (EMI).
  • Built-in protection features include overvoltage, overcurrent, and overtemperature protection.
  • Low standby power consumption enhances energy efficiency.

Advantages

  • Wide input voltage range allows for versatile applications.
  • Excellent line and load regulation ensure stable output voltage.
  • Frequency jittering reduces EMI, meeting regulatory requirements.
  • Built-in protection features enhance system reliability and safety.
  • Low standby power consumption saves energy and reduces environmental impact.

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications.
  • The DFN-8 package may require specialized equipment for soldering and handling.

Working Principles

The NCP1246BLD100R2G operates based on a current mode control scheme. It uses a high voltage startup circuit to enable operation in a wide input voltage range. The IC regulates the output voltage by adjusting the duty cycle of the internal power switch. Frequency jittering is employed to reduce electromagnetic interference. Built-in protection features monitor various parameters and provide shutdown or fault detection when necessary.

Application Field Plans

The NCP1246BLD100R2G is commonly used in the following applications:

  1. Power supplies for consumer electronics
  2. LED lighting drivers
  3. Industrial automation systems
  4. Automotive electronics
  5. Battery chargers

Alternative Models

Some alternative models that offer similar functionality to the NCP1246BLD100R2G include:

  1. TNY274PN
  2. FAN7602B
  3. UC3843B
  4. LM2576T-ADJ
  5. LT1370CR#PBF

These models can be considered as alternatives depending on specific requirements and availability.

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Liste 10 perguntas e respostas comuns relacionadas à aplicação de NCP1246BLD100R2G em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of NCP1246BLD100R2G in technical solutions:

  1. Q: What is NCP1246BLD100R2G? A: NCP1246BLD100R2G is a power management IC (PMIC) designed for offline flyback converters used in various applications.

  2. Q: What is the input voltage range supported by NCP1246BLD100R2G? A: The input voltage range supported by NCP1246BLD100R2G is typically between 85V AC and 265V AC.

  3. Q: What is the maximum output power that can be achieved with NCP1246BLD100R2G? A: NCP1246BLD100R2G can support a maximum output power of up to 12W.

  4. Q: Can NCP1246BLD100R2G operate in continuous or discontinuous conduction mode? A: NCP1246BLD100R2G can operate in both continuous and discontinuous conduction modes, depending on the load conditions.

  5. Q: Does NCP1246BLD100R2G have built-in protection features? A: Yes, NCP1246BLD100R2G includes various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

  6. Q: What is the typical switching frequency of NCP1246BLD100R2G? A: The typical switching frequency of NCP1246BLD100R2G is around 65 kHz.

  7. Q: Can NCP1246BLD100R2G be used in dimmable LED lighting applications? A: Yes, NCP1246BLD100R2G can be used in dimmable LED lighting applications by incorporating external circuitry for dimming control.

  8. Q: What is the standby power consumption of NCP1246BLD100R2G? A: The standby power consumption of NCP1246BLD100R2G is typically very low, often below 100 mW.

  9. Q: Is NCP1246BLD100R2G suitable for universal input voltage applications? A: Yes, NCP1246BLD100R2G is designed to support universal input voltage applications, making it suitable for use worldwide.

  10. Q: Can NCP1246BLD100R2G be used in battery charging applications? A: No, NCP1246BLD100R2G is primarily designed for offline flyback converters and may not be suitable for battery charging applications.

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