STMicroelectronics Launches Highly Integrated and Flexible Synchronous DC/DC Converters for Smart Industrial Applications

STMicroelectronics’ L6983 38V/3A synchronous DC/DC converters maintain high efficiency at all loads with a maximum value of 95% and are highly integrated with synchronous MOSFETs on-chip to save external components and simplify design.

Geneva, February 10, 2020 - STMicroelectronics' L6983 38V/3A synchronous DC/DC converters maintain high efficiency at all loads with a maximum value of 95% and are highly integrated with synchronous MOSFETs on-chip to save external components and simplify design.


The L6983 converters have extremely low quiescent current of just 17µA. Low current consumption (L6983C) and low-noise (L6983N) variants are available. The L6983C enters pulse-skipping mode when the load current is below 0.6A while the L6983N, suitable for noise-sensitive applications, stays in PWM (pulse-width modulation) mode at all loads to minimize electromagnetic disturbances.

With a wide input-voltage range from 3.5V to 38V, L6983 converters are an efficient and flexible solution for 12V and 24V industrial bus-powered systems, battery-powered equipment, decentralized intelligent nodes such as smart-building controllers, and always-on devices including smart sensors. They can be ordered with 3.3V, 5V, or adjustable output voltage.

All L6983 variants feature a Power-Good output pin that can be used for power-up/power-down sequencing, enabling logic circuitry, or as a fault indicator. In addition, integrated feedback-loop compensation, over-voltage protection, and soft-start circuitry simplify the design of a complete power-supply system. The switching frequency is programmable from 200kHz to 2.2MHz. Frequency spread-spectrum operation and external frequency synchronization ease EMC compliance.

ST has also released the STEVAL-ISA208V1 evaluation board for L6983C to help accelerate device selection and power-supply development.

The L6983C and L6983N are in production now, packaged in 3mm x 3mm QFN16, from $1.50 for orders over 1000 pieces.

Please visit www.st.com/l6983-pr for more information.

Featured Product

Dynatect Automated Machine Safety Roll-Up Doors

Dynatect Automated Machine Safety Roll-Up Doors

Need to increase safety? Are you using light curtains? Is space a concern? Dynatect's Gortite® VF Automated Machine Safety Door combines safety technology, speed, and a physical barrier to isolate hazardous operations. Use of a physical barrier with safety sensors can save up to 30 square feet of manufacturing space. Using the ANSI minimum safety distance formula, the Gortite® VF Door limits the depth penetration factor and average approach speed, allowing closer location of the safeguarding device. Unlike light curtains, which can't contain process hazards, an automated machine safety door can isolate common workplace debris. This physical barrier is designed to contain process driven hazards such as weld sparks, UV flash, and light debris. Thus, the operator can maintain closer proximity to the work area improving ergonomics and productivity.