Exar offers a complete family of DC to DC power conversion products from linear regulators and LDOs to high-performance switching regulators, controllers, and modules covering applications with currents ranging from a few mA to 35A. Exar’s Universal PMICs and Programmable Power Modules provide an exceptional level of flexibility, ease of use, remote configurability and telemetry with solutions for the system designer to the most experienced power supply designer.
The XRP6124 is a non synchronous step down (buck) controller for up to 5Amps point of loads. A wide 3V to 30V input voltage range allows for single supply operations from industry standard 3.3V, 5V, 12V and 24V power rails. With a proprietary Constant On-Time (COT) control scheme, the XRP6124 provides extremely fast line and load transient response while the operating frequency remains nearly constant. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The XRP6124 also implements an emulated ESR circuitry allowing usage of ceramic output capacitors and insuring stable operations without the use of extra external components.
The XRP7664/7665 are synchronous current mode PWM step down (buck) regulators capable of a constant output current up to 2Amps and 3Amps. A wide 4.75V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails.