ST1PS01GJR

Voltage Regulators - DC DC Switching Regulators Overview

The ST1PS01GJR is a Nano-Quiescent synchronous step-down converter from STMicroelectronics, designed for high efficiency and minimal PCB footprint. It features an input voltage range of 1.8 V to 5.5 V and delivers up to 400 mA output current. The device operates at a switching frequency of 2 MHz with a typical quiescent current of 500 nA. Output voltage options include fixed settings of 1.8 V, 2.7 V, 3 V, and 3.3 V, or dynamic selection between 0.625 V and 3.3 V via digital inputs. It utilizes a Flip-Chip package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Nano-Quiescent architecture minimizes static current consumption for extended battery life in low-power applications.
• High integration allows the use of tiny external components, such as a 2.2 µH inductor, reducing overall board size.
• Dynamic output voltage selection capability enables flexible power rail configuration through digital control inputs.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring compact power solutions
• Battery-powered IoT devices needing ultra-low standby current
• Embedded systems with strict PCB thickness constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix GJR against official STMicroelectronics documentation to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with your target output voltage configuration, as fixed and selectable variants may differ. Cross-reference the datasheet for thermal performance in the Flip-Chip package under your expected load conditions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when system design prioritizes minimal quiescent current and small form factor over adjustable analog feedback. The 2 MHz switching frequency permits smaller passive components compared to lower-frequency alternatives. Consider the Flip-Chip package constraints for PCB layout and thermal dissipation needs during the initial schematic phase.

Voltage Regulators - DC DC Switching Regulators Part Context

The ST1PS01 series belongs to STMicroelectronics' portfolio of nano-quiescent synchronous buck converters. These devices are engineered specifically for applications where power efficiency and physical space are critical limiting factors. The family emphasizes advanced circuitry to reduce idle current while maintaining robust performance across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ST1PS01EJR is a documented variant within the same product family offering similar functionality.