Step-down (buck) switching regulators
Efficient conversion of an input voltage to a lower output voltage
With over 1000 unique devices, we own the industry’s most comprehensive portfolio of high-efficiency DC/DC step-down (buck) switching regulators. This extensive family of products includes all types of step-down switching regulators, ranging from the flexibility of a controller IC to the high-integration and simplicity of a buck power module. From 1-V to 100-V input and 50-mA to 420-A output, you can count on us to have a step-down voltage regulator that meets your system’s requirements.
Browse buck regulators by type
Power module
We have the industry's largest and most diverse portfolio of DC/DC buck modules. With integrated FETs and inductor, power modules simplify your power supply design process and get you to market faster.
Converter
Our comprehensive portfolio of DC/DC buck converters covers an input voltage range of 1.3 V to 100 V and output current up to 40 A. With integrated FETs and external inductor, converters provide a good balance of integration and flexibility.
Controller
Our family of DC/DC buck controllers extends to 100-V maximum input voltage and 420-A maximum output current. Controllers with external FETs and inductor provide the most design flexibility for high-power applications.
Power trends
Power management is at the center of enabling the continued integration of electronics in our lives. For decades, TI has been at the forefront of developing new process, packaging and circuit-design technologies to deliver the best power devices for your design. Check out our featured DC/DC buck regulators below, designed to help you address EMI, power density, and quiescent current challenges.
Step-down (buck) regulators for low EMI
Mitigating buck regulator EMI can be a major challenge for many power-supply designers. Devices with built-in EMI-reduction technologies save design time while helping you comply with difficult standards such as CISPR 25 Class-5. Check out our featured step-down regulators for EMI performance. For more help with EMI mitigation, explore our EMI training hub.
TPS62810-Q1
Automotive 2.75-V to 6-V, 4-A step-down converter in a 2-mm x 3-mm QFN package with wettable flanks
LM25149
42-V synchronous buck DC/DC controller with an integrated active EMI filter (AEF) and dual random spread spectrum (DRSS)
LMQ61460-Q1
36-V, 6-A synchronous step-down converter with integrated bypass capacitors and pseudo-random spread spectrum
Step-down (buck) regulators for power density
More power, less board space. This is the trend in applications across all markets as well as the TI step-down voltage regulator portfolio. Highlighted by the SWIFT™ buck regulator family, our portfolio of high-power density devices are highly integrated, with high performance feature sets and high output-current capability in compact, thermally-enhanced packaging.
High-density buck regulators are a great choice for powering high-current digital loads like FPGAs and processors. Use our processor-attach tool to find the best products to complement your FPGA or processor.
Step-down (buck) regulators for low quiescent current (IQ)
DC/DC step-down regulators with ultra-low standby quiescent current increase light-load efficiency and extend battery life in portable and battery-operated applications. Find some of the lowest IQ devices in our buck regulator portfolio below.
TPS62840
1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter with the world's lowest quiescent current at 60 nA
LMR43620-Q1
Automotive 3-V to 36-V, 2-A synchronous buck regulator with <3-μA quiescent current at 150ºC Tjmax
LM25149-Q1
42-V synchronous buck DC/DC controller with an integrated active EMI filter (AEF) and 9-μA quiescent current
Buck converters for low noise and precision
Typical switching regulators require a post-regulator LDO to power high-resolution ADCs and AFEs. But with the industry's best noise and ripple performance, TPS62912 and TPS62913 allow you to remove that low-noise LDO in most applications, saving PCB area and overall cost while improving system efficiency.
Step-down (buck) switching regulators design resources
View our library of buck voltage regulator application notes, selection guides and white papers.
Browse complete board-level and system-level reference design circuits to help you quickly evaluate and customize your power system.
Explore the wealth of training videos on various DC/DC step-down regulator topics.
Search for any suppliers' buck switching regulators to find our similar devices by parameter.
Receive fast and reliable technical support from our engineers throughout every step of your design.
Reduce development time with our end-to-end power-supply design tool.