XR76201

XR76201 40V 1.5A Synchronous Step-Down COT Regulator Description The XR76201 is a synchronous step-down regulator combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies. The XR76201 is capable of supplying steady state loads of 1.5A. A wide 5V to 40V input voltage range allows for single supply operation from 12V battery systems required to withstand load dump, industry standard 24V ±10%, 18V to 36V, and rectified 18VAC and 24VAC rails. With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR76201 provides extremely fast line and load transient response using ceramic output capacitors. They require no loop compensation, simplifying circuit implementation and reducing overall component count. The control loop also provides 0.05% load and 0.15% line regulation and maintains constant operating frequency. A selectable power saving mode allows the user to operate in Discontinuous Conduction Mode (DCM) at light current loads, thereby significantly increasing the converter efficiency. A host of protection features, including overcurrent, over temperature, short-circuit and UVLO, helps achieve safe operation under abnormal operating conditions. The XR76201 is available in a RoHS-compliant, green / halogen-free, space-saving 5mm x 5mm QFN package. FEATURES ■■ Controller, drivers, bootstrap diode and MOSFETs integrated in one package ■■ 1.5A step-down regulator Wide 5V to 40V input voltage range >0.6...