RichTek Technology Corporation DC DC Switching Controllers RT8237CZQW(2)

The RT8237CZQW is a high-efficiency single synchronous buck PWM controller designed for stepping down high voltage batteries to low voltage supplies, suitable for applications such as notebook computers and CPU core power. It operates within a wide input voltage range of 4.5V to 26V and can output voltages from 0.7V to 3.3V, with a built-in 0.5% reference voltage. The controller features a quick load-step response of 100ns, programmable current limit sensing, and four selectable frequency settings. It includes soft-start control, integrated over-voltage, over-current, and under-voltage protection, as well as thermal shutdown capabilities. The device is RoHS compliant and halogen-free, making it suitable for environmentally conscious designs. The RT8237CZQW is packaged in a compact WDFN-10L 3x3 format, facilitating easy integration into various electronic designs.