NXF6505B-Q100 Datasheet | Nexperia

TSOT23-6 NXF6505A-Q100; Low-noise, 1.2 A transformer driver for isolated power supplies Rev. 2 - 22 August 2025 Product data sheet 1. General description 2. Features and benefits The NXF6505A/B-Q100 is a specialized push-pull transformer driver that is designed for isolated power supplies in small form factors. This driver is capable of driving low-profile, center-tapped transformers from a 2.25 V to 5.5 V DC power supply, while achieving ultra-low noise and EMI using slew rate control and Spread Spectrum Clocking (SSC). The NXF6505A/B-Q100 Features internal protection Features such as current limiting, undervoltage lockout, thermal shutdown, and break-before-make circuitry, ensuring the device operates within safe limits. The device also includes a soft-start feature that prevents high inrush current during power-up with large load. The NXF6505A/B-Q100 is constructed using an oscillator and a gate drive circuit that produces plementary output signals to drive ground-referenced N-channel power switches. These two plementary 1.2 A Power-MOSFET switches can be used to provide >6 W power. The 440 k Hz internal oscillator is for applications that require higher efficiency and smaller transformers. The NXF6505A/B-Q100 is available in a small 6 pin SOT8061-1 package and is characterized for operation within a temperature range of -55 °C to 125 °C. This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications. NXF6505 4 GND D2 3 5 enable 6 external clock VCC 2 D1 1 VCC 10 µF VOUT 10 µF 0.1 µF aaa-040617 - Automotive product qualification in accordance with AEC-Q100 (Grade 1) - Specified from -55 °C to +125 °C - Push-pull driver for transformers, optimized for low EMI: - Slew-rate control output - Spread Spectrum Clocking (SSC) - Wide input voltage range: 2.25 V to 5.5 V - High output drive: 1.2 A at 5 V supply - Low RON 0.2 Ω maximum at 5...