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STMicroelectronics STPMIC1 Power Management IC: Managing Low Power Without Sacrificing Efficiency

November 19, 2019 by Luke James

The STPMIC1APQR is a fully integrated power management IC designed for products requiring low power function with the assurance of maintaining high efficiency in performance.

Designed for products that are based on highly integrated application processor designs and require low power and high efficiency, the STPMIC1ntegrates advanced low power features controlled by a host processor via an I2C and IO interface. 


STMicroelectronics STPMIC1 regulator.

The STPMIC1APQR power management IC. Image Credit: STMicroelectronics.


STPMIC1 Regulators for Application Processor Power Supply

Designed to supply power to application processors as well as to external system peripherals, the STPMIC1APQR features four adjustable general-purpose LDOs with a boost converter that can power up to three USB powers—two 500 mA host USB ports and one 100 mA USB OTG. 

Four buck SMPS converters are optimized to facilitate an excellent transient response and output voltage precision for various operating conditions, high full range efficiency with a low power mode and smooth transition from PFM to PWM, and an advanced PWN sync technique with an integrated PLL for better EMI performance.


Additional features include:

  • Input voltage range from 2.8 V to 5.5 V

  • Four adjustable general-purpose LDOs

  • 1 LDO for DDR3 termination

  • Bypass mode for low power DDR

  • 1 LDO for USB PHY supply with automatic power source detection

  • One reference voltage LDO for DDR memory

  • 5.2 V / 1.1 A boost SMPS with bypass mode for 5 V input or battery input

  • User-programmable NVM, allowing scalability to support various applications

  • PC and digital IO control interface


STPMIC1 Regulator Applications and Relevant Industries 

The STPMIC1APQR has a range of potential applications. These include the Internet of Things, Industrial Internet of Things, wearable devices, Industry 4.0, portable devices, smart homes and smart buildings, power management for embedded microprocessor units, and man-machine interfaces. 

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