Semiment SC4251DN-TR

SC4251 is an integrated Hall-effect position sensor designed for permanent magnet detection. This IC can be configured to enter an ultra-low power mode, making it well-suited for battery-powered applications such as robotic vacuum cleaners, cordless power tools, wireless game controllers, and peripherals. In normal operating mode, the signal conditioning unit generates sine and cosine voltage signals corresponding to the external magnetic field, which can be used for angle calculation. Users can control the operating mode of the device by applying a logic-level signal to the SLEEP pin. When the SLEEP pin is pulled high, the device enters sleep mode with an operating current of less than 25uA, while the outputs transition to a high-impedance state. When the SLEEP pin is pulled low, the device resumes normal operating mode. The sensor features a wide supply voltage range (3V ~ 5.5V) and operating temperature range (-40℃ ~ 125℃). The device package uses lead-free, environmentally friendly materials with 100% matte tin frame plating. Sensitivity is defined as the ratio of output voltage change to magnetic field change, calculated as Sens = [VOUT(B1) - VOUT(B2)] / (B1 - B2). Power-on time is defined as the time required for the output voltage to settle within ±10% of its steady-state value under an applied magnetic field, after the supply reaches the minimum specified operating voltage. Output delay time is defined as the time interval between the applied magnetic field reaching 20% of its final value and the output reaching 20% of its final value.

• Sine and cosine output signals
• Supply voltage range 3V ~ 5.5V
• Sleep mode current consumption less than 25uA
• Sleep fast wake-up time less than 10us
• Magnetic rotation speed up to 80000 RPM
• Wide operating temperature range -40℃ ~ 125℃
• Available in two package options: DFN3×3 and DFN1616

• Motor control
• Electric toothbrush
• Position sensor
• Game controllers and peripherals