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NCP1351ADR2G from ON Pb-free,ON Semiconductor

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NCP1351ADR2G

Manufacturer: ON Pb-free, ON

Variable Off Time PWM Controller

Partnumber Manufacturer Quantity Availability
NCP1351ADR2G ON Pb-free, ON 4746 In Stock

Description and Introduction

Variable Off Time PWM Controller The **NCP1351ADR2G** is a highly efficient, fixed-frequency current-mode controller designed for offline power supply applications. This integrated circuit (IC) is engineered to provide robust performance in AC-DC converters, making it suitable for a wide range of power management solutions, including adapters, chargers, and auxiliary power supplies.  

Featuring a proprietary high-voltage startup circuit, the NCP1351ADR2G minimizes standby power consumption while ensuring reliable operation. Its fixed-frequency architecture enhances noise immunity and simplifies design implementation, particularly in flyback converter topologies. The IC incorporates essential protection mechanisms such as overvoltage protection (OVP), brownout detection, and latch-off functionality, ensuring system reliability under fault conditions.  

With an operating frequency that can be adjusted via external components, the NCP1351ADR2G offers flexibility in design while maintaining stable performance across varying load conditions. Its current-mode control ensures fast transient response and improved line regulation, making it an excellent choice for high-efficiency power supplies.  

Housed in a compact SOIC-8 package, the NCP1351ADR2G is well-suited for space-constrained applications. Its combination of performance, protection features, and ease of use makes it a preferred solution for designers seeking a dependable power management IC for offline applications.

Application Scenarios & Design Considerations

Variable Off Time PWM Controller

Alternative Part Number

  • UC3842AN --: Industry-standard current-mode PWM controller in DIP-8, widely used as a functional substitute for offline flyback controllers like the NCP1351.
  • SG6848D --: Green-mode PWM controller for flyback converters with similar current-mode control and low standby power, suitable drop-in class replacement.
  • OB2263AP --: Low-cost current-mode PWM controller for offline flyback SMPS with comparable features and pinout, commonly used as an alternative.

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