The RT8237C RT8237CZQW Z3= Marking Z3= IC QFN10 series, including RT8237CZQW (marking “Z3=”), is a high-efficiency single-phase synchronous buck PWM controller designed for notebook computer CPU-core, chipset, DRAM and low-voltage supply rails as low as 0.7 V
Usage / Compatibility Notes:
- When replacing this IC on a motherboard, ensure the package is indeed the 10-pin WDFN (3×3) QFN style and the marking “Z3=” matches.
- Check that the VIN of the board falls within 4.5 V to 26 V (for this controller) and that the target output voltage is within the controller’s adjustable range (via external FB resistors) down to ~0.7 V.