STMicroelectronics Announces Single-Chip Step-Down DC/DC Converter with 3A Capability for Home Appliances and Industrial Equipment
Key facts
- STMicroelectronics Announces Single-Chip Step-Down DC/DC Converter with 3A Capability for Home Appliances and Industrial Equipment
- ST announces 3A DC/DC converter
- Date: March 30, 2026
Direct answer
ST announces 3A DC/DC converter
- Citation
- STMicroelectronics Announces Single-Chip Step-Down DC/DC Converter with 3A Capability for Home Appliances and Industrial Equipment (March 30, 2026)
- Source
- PR Times
- Date
- March 30, 2026
ST announces 3A DC/DC converter
📋 Article Processing Timeline
- 📰 Published: March 30, 2026 at 00:26
- 🤖 AI Analyzed: May 26, 2026 at 21:27 (1389h 0m after Published)
STMicroelectronics (NYSE: STM) has announced the DCP3603, a monolithic step-down DC/DC converter capable of delivering 3A in a compact 3 x 1.6mm footprint. The product simplifies design, reduces board area, shortens development time, and improves system reliability. With a wide input voltage range of 3.3V to 36V, it is suitable for applications such as smart meters, home appliances, and industrial 24V systems.
The DCP3603 uses synchronous rectification and offers selectable fixed switching frequencies of 1MHz or 500kHz, maintaining high efficiency across the full load range — achieving 93% conversion efficiency at 600mA load (12V input / 5V output). With integrated power switches and compensation, the circuit is complete with only an inductor, bootstrap circuit, filter capacitors, and feedback resistors, minimizing component count.
Two variants are available: one in forced PWM mode for optimal performance in noise-sensitive applications, and one in pulse-skipping mode to minimize power consumption at light loads. Both feature frequency dithering to reduce switching noise, an ultra-low quiescent current of 85µA, and an enable pin to shut down the converter for additional power savings.
The dedicated evaluation board STEVAL-3603BC1 allows rapid evaluation of new designs using the DCP3603. Its compact size and easy connections via screw terminals and headers enable immediate operation verification.
The DCP3603 is now in mass production, available in a 6-lead SOT23 package at approximately $0.44 per unit in quantities of 1,000.
The DCP3603 uses synchronous rectification and offers selectable fixed switching frequencies of 1MHz or 500kHz, maintaining high efficiency across the full load range — achieving 93% conversion efficiency at 600mA load (12V input / 5V output). With integrated power switches and compensation, the circuit is complete with only an inductor, bootstrap circuit, filter capacitors, and feedback resistors, minimizing component count.
Two variants are available: one in forced PWM mode for optimal performance in noise-sensitive applications, and one in pulse-skipping mode to minimize power consumption at light loads. Both feature frequency dithering to reduce switching noise, an ultra-low quiescent current of 85µA, and an enable pin to shut down the converter for additional power savings.
The dedicated evaluation board STEVAL-3603BC1 allows rapid evaluation of new designs using the DCP3603. Its compact size and easy connections via screw terminals and headers enable immediate operation verification.
The DCP3603 is now in mass production, available in a 6-lead SOT23 package at approximately $0.44 per unit in quantities of 1,000.
FAQ
What is the primary function of the newly announced STMicroelectronics DCP3603?
The STMicroelectronics DCP3603 is a monolithic step-down DC/DC converter designed to deliver a continuous output current of 3A.
What is the input voltage range supported by the DCP3603, and what types of applications is it suitable for?
The DCP3603 supports a wide input voltage range from 3.3V to 36V, making it ideal for applications like smart meters, home appliances, and industrial 24V systems.
What are the key efficiency figures and operating frequencies of the DCP3603?
The DCP3603 achieves up to 93% conversion efficiency at a 600mA load (12V input / 5V output) and offers selectable fixed switching frequencies of 1MHz or 500kHz.
What are the two available variants of the DCP3603, and what are their respective advantages?
The two variants are in forced PWM mode for noise-sensitive applications and pulse-skipping mode to minimize power consumption at light loads.
What is the package type and approximate cost of the STMicroelectronics DCP3603?
The DCP3603 is available in a 6-lead SOT23 package and is priced at approximately $0.44 per unit for quantities of 1,000.