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Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.Dear customers; Due to the official holiday of Democracy and National Unity Day on July 15, 2026, our courier services and our company will be closed. Orders placed on July 15th will be shipped on Thursday, July 16, 2026.

uP1666QQKF uP1666Q uPI 2-Phase Buck Controller WQFN-20

uP1666QQKF uP1666Q uPI 2-Phase Buck Controller WQFN-20

uP1666QQKF uP1666Q uPI 2-Phase Buck Controller WQFN-20 


Product Code: uP1666QQKF 

Part Marking: uP1666Q 

Brand: uPI Semiconductor 

Package Code: WQFN-20 3x3 mm 

Datasheet: uP1666Q 

Product Specifications 

The uP1666QQKF is a high-performance 2/1-phase synchronous-rectified buck controller manufactured by uPI Semiconductor, specifically designed for mobile GPU power delivery. Operating with an input voltage between 2.5V and 20V, this IC supports the NVIDIA Open Voltage Regulator 2+ standard and features PWMVID. Thanks to uPI's proprietary RCOTT™ technology, it provides an excellent and very fast transient response to load and line changes. Packaged in a compact WQFN-20, this chip plays a critical role in repairing graphics card (VGA/GPU) power (VRM) circuits in laptops. 

  • Type: 2-Phase Synchronous-Rectified Buck Controller 
  • Input Voltage (Vin): 2.5V - 20V 
  • Control Architecture: RCOTT™ Technology, PWMVID Support 
  • Features: NVIDIA Open Voltage Regulator 2+ compatible, MOSFET RDS(ON) current sensing 
  • Package: WQFN3x3-20L 
  • Applications: Mobile GPU (Graphics Card) power supply circuits, laptop VGA power repairs 


Sales Information 

Condition: BRAND NEW. Original. 

Warranty: No warranty is provided for semiconductor products. 

Shipping (Turkey): All orders placed before 16:00 on weekdays and 14:30 on Saturdays are shipped the same day via contracted courier. (Excluding busy shipping periods and extraordinary circumstances) 

International Shipping: Orders placed before 16:00 on weekdays are shipped the same business day via Air Parcel. Orders placed on weekends and outside working hours are shipped on the following first business day. (Excluding busy periods) Country of dispatch is Turkey.

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