STPMIC1EPQR

Power Management - Specialized Overview

The STPMIC1EPQR is a fully integrated power management IC designed for high-integration application processor systems requiring low power and high efficiency. It features four adjustable general-purpose LDOs, one DDR3 termination LDO, one USB PHY LDO with automatic source detection, and one reference voltage LDO. The device includes four adjustable adaptive constant on-time buck SMPS converters and a 5.2 V / 1.1 A boost SMPS with bypass mode for 5 V input or battery input. It also integrates a 500 mA USB OTG compliant power switch and a 500 mA/1000 mA general-purpose power switch. Control is managed via I²C and digital IO interfaces, with user-programmable non-volatile memory for scalability.

Power Management - Specialized Feature Summary

• Integrates advanced low-power regulators controlled by a host processor via I²C and IO interface to supply application processors and external peripherals such as DDR and Flash memories.
• Features a boost converter with an advanced bypass architecture that smoothly regulates VBUS for USB ports from both battery sources and low-cost consumer 5 V AC-DC adapters.
• Includes four optimized buck SMPS converters that provide excellent transient response, output voltage precision, and high full-range efficiency through smooth PFM to PWM transitions and integrated PLL synchronization.
• Supports user programmable non-volatile memory (NVM) to enable scalability for a wide range of applications.

Power Management - Specialized Applications

• Powering application processors in high-integration designs
• Supplying external system peripherals including DDR and Flash memories
• Providing power to USB ports via integrated boost converter

Power Management - Specialized Procurement Notes

Verify the specific suffix EPQR against official STMicroelectronics documentation to confirm exact temperature grade, packaging, and tape-and-reel specifications. Ensure compatibility with the target host processor's I²C and IO interface requirements. Confirm that the WFQFN 44L package dimensions align with the PCB layout constraints. Cross-reference the part number with the latest datasheet revision to ensure all electrical parameters meet the design specifications.

Power Management - Specialized Selection Notes

Select this component for designs requiring a highly integrated PMIC solution for application processors. It is suitable for systems needing multiple regulated outputs for logic, memory, and USB interfaces. Consider the I²C control interface for dynamic power management. Evaluate the need for NVM configuration versus fixed settings. Ensure the input voltage range of 2.8 V to 5.5 V matches the system power source capabilities.

Power Management - Specialized Part Context

The STPMIC1 series is part of STMicroelectronics' portfolio of specialized power management ICs aimed at microprocessor units. These devices are engineered to support complex embedded systems by consolidating multiple power rails into a single compact package. The series emphasizes efficiency and low noise, making it appropriate for sensitive digital circuits and multimedia applications where power integrity is critical.

Power Management - Specialized Replacement Considerations

Check for other members of the STPMIC1 family with different suffixes that may offer variations in pinout or feature sets. Verify if alternative PMICs from other manufacturers provide equivalent functionality without requiring significant redesign of the control interface or power rail configuration.

Power Management - Specialized FAQ

How is the STPMIC1EPQR controlled?

It is controlled by a host processor via an I²C and digital IO interface.

What type of memory does the device integrate for configuration?

It includes user-programmable non-volatile memory (NVM) to support scalability across various applications.