G5383BQU1U

G5383B is a 5A, synchronous DC/DC buck converter with integrated 30m N-channel high-side MOSFET and 30m N-channel low-side MOSFET. It uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The G5383B achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. The built-in 5V LDO supports 10mA for internal circuits. The G5383B is intended for the power supply as low as 0.9V. The G5383B is available in QFN3X3-24 package.