Buck converters boast efficiencies up to 95%

They are in stock at authorised distributor DigiKey.

To achieve high-efficiency DC/DC conversion, they integrate a 120 mΩ high-side N-MOSFET and a 55 mΩ low-side N-MOSFET.

With efficiencies of up to 95%, the AL88902Q can handle up to 2.5 A of continuous load current, while the AL8890Q can handle up to 3.5 A. They use current mode control, which makes loop stabilization simple and compatible with various output loads.

In addition to providing soft-start and tracking functionality, the AL8890Q and AL88902Q can operate as LED and constant-current (CC) drivers thanks to their SS/TR multi-function pin.

The high switching frequency, smaller inductor size, and integrated MOSFET of the AL8890Q and AL88902Q simplify board layout and minimize space requirements, which makes them perfect for power management.

The AL8890Q and AL88902Q are available in TSSOP-16EP and wettable flank U-QFN4040-16/SWP (Type UXB) packages.

Multi-function SS/TR pin supports constant voltage and constant current modes of operation. This allows the same device to be used as a high-current buck voltage converter, as well as an LED driver.

Adjustable switching frequency up to 2.5 MHz with external clock synchronization reduces solution footprint and cost

Automatic switchover between PFM and PWM modes ensures high efficiency across all loads

Applications cover point-of-load regulation in automotive infotainment, automotive motor controls and automotive ECUs. LED driving in automotive exterior and interior LED lighting systems.