ST Launches Power Management IC for Industrial STM32 MPUs… Supports Integrated Power Design
Published2026.04.08 14:51
Power supply, monitoring, and protection functions integrated into a single chip
ST announced on April 8 that it has released the STPMIC1L and STPMIC2L. These products are PMICs optimized for the 32-bit STM32MP1x series and the 64-bit STM32MP2x series, respectively. The company explained that these chips are designed to support multiple power rails required by microprocessors, thereby reducing board area and component costs while simplifying hardware design.
Both products incorporate fixed and variable LDOs and DC/DC buck converters, and also include a dedicated LDO for external DDR DRAM. The STPMIC1L is equipped with two buck converters, four LDOs, one LDO for DRAM, and two external power control pins. The STPMIC2L provides three buck converters, seven LDOs, one LDO for DRAM, and three power control pins. Both products support an input voltage range from 2.8V to 5.5V.
Applications include POS terminals, network gateways, home automation systems, edge processing platforms, printers, barcode scanners, and weighing systems. The operating temperature range is from -40 degrees to 125 degrees, allowing it to be used in environments with significant temperature fluctuations, such as industrial control units, thermostats, and smart factory equipment.
Adaptive Constant On-Time (COT) control is applied to the power control method. As a result, it can respond quickly to load changes and enables efficiency management through dynamic voltage scaling. In addition, it is equipped with output discharge mode, overcurrent protection (OCP), power rail monitoring, and power on/off sequencing functions to enhance the operational stability of the microprocessor.
Development support is also provided. ST has released two evaluation boards, the STEVAL-PMIC1LKV1 and STEVAL-PMIC2LKV1, which support chip configuration, monitoring, and NVM parameter settings through a dedicated graphical user interface (GUI). Both products can also be used in the OpenSTLinux-based STM32 MPU ecosystem. They are currently in mass production, with the STPMIC1L starting at $1.34 per unit for orders of 1,000 and the STPMIC2L starting at $1.77 per unit.
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