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NCP1205DR2 from ON,ON Semiconductor

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NCP1205DR2

Manufacturer: ON

Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback

Partnumber Manufacturer Quantity Availability
NCP1205DR2 ON 30 In Stock

Description and Introduction

Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback The **NCP1205DR2** is a high-performance pulse-width modulation (PWM) current-mode controller designed for offline power supply applications. Manufactured by ON Semiconductor, this integrated circuit (IC) is widely used in AC-DC converters, switch-mode power supplies (SMPS), and other power management systems requiring precise regulation and efficiency.  

Featuring a fixed-frequency operation, the NCP1205DR2 ensures stable performance while minimizing electromagnetic interference (EMI). Its current-mode control architecture enhances transient response and simplifies loop compensation, making it suitable for flyback and forward converter topologies. The device includes built-in protections such as overvoltage (OVP), overload (OLP), and short-circuit safeguards, improving system reliability.  

With a low startup current and an integrated high-voltage startup circuit, the NCP1205DR2 reduces external component count, lowering overall design complexity. Its auto-recovery mode enhances fault tolerance, ensuring continuous operation under varying load conditions. The IC operates over a wide input voltage range, making it versatile for industrial, consumer, and telecommunications applications.  

Housed in an SOIC-8 package, the NCP1205DR2 offers a compact footprint while maintaining thermal efficiency. Engineers favor this component for its robustness, ease of integration, and cost-effective power management solutions.

Application Scenarios & Design Considerations

Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback

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