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Buck Regulators

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ST's monolithic step-down (buck) switching regulators offer input-voltage capability up to 61 V, deliver output currents up to 4 A, with high switching frequency.
This broad portfolio of ICs is composed of highly-specialized products to meet every market requirement: HV technology together with high reliability and robustness for industrial and automotive applications, compactness, high efficiency at any load and a high level of performance for consumer and computer products.

These devices embed a full set of protection functions (overcurrent, overvoltage, over-temperature) to increase the MTBF and reduce the number of external components.

There are multiple package options, all offering compactness and high thermal performances to fit different applications.

dc dc buck converter how to choose pdf

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ST1PS01 nano quiescent step down for IoT (ST at embedded world 2019)
ST1PS01 nano quiescent step down for IoT (ST at embedded world 2019)

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Featured Products

ST1PS01 nano-quiescent, high-efficiency step-down converter

save energy and space in IoT devices

PM8903A 3 A buck regulator

Integrated 35 mΩ MOSFETs for high efficiency

New 61 V, 3 A step-down switching regulator for automotive application

Housed in a HTSSOP16-package, the A7987 is a 3 A step-down switching regulator with a wide input-voltage range, making it suitable for 24 V battery-powered applications.

Specifically recommended to design flexible and robust solutions, the A7987 also offers a set of additional functionalities including adjustable current limit, synchronization with a 180° phase shift, and power sequencing.

These key features ensure flexible and stable performance when several voltage rails are powered up in automotive applications such as body infotainment and telematics.

Large selection of step-down DC-DC regulators with synchronous rectification

In the quest for higher efficiency and compact form factor in their DC-DC supply designs, engineers now have a few more allies: the L6985F, L6986F and L6986 step-down DC-DC regulators with synchronous rectification and an output current of 0.5 A, 1,5 A and 2 A respectively.
Based on a peak current mode architecture with a p-channel power MOSFET, they feature a selectable low-consumption-mode (LCM burst mode) to increase efficiency at light load, and a low-noise-mode (LNM with fixed PWM switching frequency) for noise-sensitive designs.

An easy-to-use evaluation board (STEVAL-ISA156V1) based on the L6986 regulator is available to help you configure and evaluate application parameters so you can reach higher efficiency, higher power density and lower standby power designs.

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Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.