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NCP1308DR2G from ON,ON Semiconductor

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NCP1308DR2G

Manufacturer: ON

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

Partnumber Manufacturer Quantity Availability
NCP1308DR2G ON 1331 In Stock

Description and Introduction

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation The **NCP1308DR2G** 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) to regulate voltage efficiently while ensuring stable operation under varying load conditions.  

Featuring a fixed-frequency operation, the NCP1308DR2G offers precise control over power delivery, making it suitable for applications such as AC-DC adapters, LED drivers, and auxiliary power supplies. Its built-in protections, including overvoltage, overload, and short-circuit safeguards, enhance system reliability and longevity.  

The device operates with a minimal external component count, simplifying design and reducing overall system costs. Its current-mode architecture ensures fast transient response and excellent line/load regulation. Additionally, the NCP1308DR2G includes a soft-start function to minimize inrush current during startup, further improving system robustness.  

Available in a compact SOIC-8 package, the NCP1308DR2G is optimized for space-constrained designs while maintaining high efficiency across a wide input voltage range. Engineers favor this IC for its balance of performance, protection features, and ease of integration, making it a versatile choice for modern power conversion solutions.  

For detailed specifications, always refer to the official datasheet to ensure proper implementation in your design.

Application Scenarios & Design Considerations

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation
Partnumber Manufacturer Quantity Availability
NCP1308DR2G ON 1337 In Stock

Description and Introduction

PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation The **NCP1308DR2G** is a high-performance current-mode PWM controller designed for offline power supply applications. This integrated circuit (IC) is optimized for flyback converters, offering precise regulation and enhanced efficiency in AC-DC power conversion systems.  

Key features of the NCP1308DR2G include built-in frequency jittering to reduce electromagnetic interference (EMI), a high-voltage startup circuit for fast initialization, and cycle-by-cycle current limiting for robust overload protection. Its current-mode control architecture ensures stable operation across varying load conditions while maintaining tight output voltage regulation.  

With a fixed operating frequency of up to 130 kHz, this controller supports discontinuous conduction mode (DCM) and quasi-resonant (QR) operation, improving efficiency at light loads. The device also integrates critical protection functions such as overvoltage protection (OVP), brownout detection, and thermal shutdown, enhancing system reliability.  

Housed in a compact SOIC-8 package, the NCP1308DR2G is well-suited for compact power adapters, auxiliary power supplies, and LED drivers. Its low standby power consumption makes it ideal for energy-efficient designs, meeting modern power supply requirements.  

Engineers value the NCP1308DR2G for its simplicity, reliability, and ability to deliver consistent performance in demanding applications. Its combination of advanced features and robust protection mechanisms makes it a preferred choice for offline power conversion systems.

Application Scenarios & Design Considerations

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

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