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NCP1377D1R2G from ON,ON Semiconductor

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NCP1377D1R2G

Manufacturer: ON, SOP7

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation

Partnumber Manufacturer Quantity Availability
NCP1377D1R2G ON, SOP7 2170 In Stock

Description and Introduction

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation The **NCP1377D1R2G** is a high-performance current-mode PWM controller designed for offline power supply applications. This integrated circuit (IC) is widely used in switch-mode power supplies (SMPS) due to its efficient performance, robust protection features, and flexible design capabilities.  

Engineered to operate in quasi-resonant (QR) mode, the NCP1377D1R2G enhances power conversion efficiency by reducing switching losses, making it ideal for energy-conscious applications. It incorporates critical functions such as brown-out protection, overvoltage protection (OVP), and overcurrent protection (OCP), ensuring reliable operation under varying load conditions.  

Key features include a built-in high-voltage startup circuit, adjustable frequency clamping, and a skip-cycle mode for improved light-load efficiency. The controller supports a wide input voltage range, making it suitable for universal AC-DC adapters, LED drivers, and auxiliary power supplies.  

With its compact SOIC-8 package, the NCP1377D1R2G offers a space-saving solution without compromising performance. Its advanced control algorithms and protection mechanisms make it a preferred choice for designers seeking a balance between efficiency, reliability, and cost-effectiveness in power supply designs.  

For engineers working on offline power conversion systems, the NCP1377D1R2G provides a dependable and versatile solution to meet stringent performance requirements.

Application Scenarios & Design Considerations

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation

Alternative Part Number

  • UC3842BD1R2G --: Industry-standard current-mode PWM controller in SOIC-8, widely used as a functional substitute for the NCP1377 in flyback converter designs.
  • SG6848D --: Current-mode PWM controller with similar gate drive and feedback architecture, suitable for offline flyback applications.
  • OB2263MP --: Low-cost current-mode PWM controller in SOT-23-6/SOIC package commonly used as a drop-in style replacement in low-power flyback supplies.

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