Buck (step-down)

Buck (step-down)

Efficient conversion of an input voltage to a lower output voltage

High-efficiency step-down solutions. Our portfolio of high-efficiency DC/DC step-down buck switching regulators and low-dropout (LDO) linear regulators include more than 7,000 individual devices, from buck converters with the flexibility of a controller integrated circuit, to highly integrated buck power modules, to LDO linear regulators designed to filter power-supply noise for sensitive loads. With 1V to 100V input voltage ranges and 50mA to 420A output voltage ranges, there's a step-down voltage regulator that meets your system requirements.

Browse by category


Power modules (integrated magnetics)


Converters (integrated FET)


Controllers (external FET)


Mitigated interference & noise technology (MINT)


MagPack™ packaging technology


Linear & low-dropout (LDO) regulators

Design & development resources

Design tool
WEBENCH® Power Designer
WEBENCH® Power Designer creates customized power-supply circuits based on your requirements. The environment gives you end-to-end power-supply design capabilities that save you time during all phases of the design process.
Simulation tool
PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Design tool
Power Stage Designer™ software tool of most commonly used switchmode power supplies

Power Stage Designer is a JAVA-based tool that helps speed up power-supply designs as it calculates voltages and currents of 21 topologies based on user inputs. Additionally, Power Stage Designer contains a Bode plotting tool and a helpful toolbox with various functions to make power supply design (...)