ST1S06APUR

Voltage Regulators - DC DC Switching Regulators Overview

The ST1S06APUR is a synchronous step-down DC-DC converter from STMicroelectronics, designed for low-voltage digital core power. It delivers up to 1.5 A output current with an input voltage range of 2.7 V to 6 V. The adjustable output voltage spans from 0.8 V to 5.22 V. Operating at a fixed switching frequency of 1.5 MHz, it utilizes current mode PWM topology. The device features a typical efficiency exceeding 90% and a maximum non-switching quiescent current of 1.5 mA. It is housed in a compact 6-VDFN package measuring 3x3 mm.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for enhanced conversion efficiency and reduced external component count.
• Includes internal soft start functionality to limit inrush current during startup sequences.
• Provides thermal protection and current limiting mechanisms to safeguard against short-circuit conditions.
• Features an inhibit function allowing for precise power management control via external logic signals.

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage digital cores in hard disk drive applications
• Replacing high-current linear regulators to minimize heat dissipation
• General-purpose step-down conversion for portable electronic devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required output voltage ranges and pinout assignments. Confirm that the 6-VDFN exposed pad soldering process aligns with your PCB assembly capabilities. Cross-reference the RoHS compliance status with current regulatory requirements for your target market. Ensure that the selected variant matches the intended operating temperature range specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting 2.7 V to 6 V inputs to lower digital voltages. The 1.5 MHz switching frequency enables the use of small surface-mount inductors and capacitors, reducing overall board space. Consider the 1.5 A current capability for moderate load requirements. The adjustable output allows flexibility for various core voltage needs within the specified range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ST1S06 series of buck converters, optimized for high efficiency in small form factors. The series is engineered to replace linear solutions where thermal management is critical. It represents STMicroelectronics' focus on integrating power management functions into minimal footprints suitable for modern consumer and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other parts within the ST1S06 family, such as fixed-output variants like ST1S06PU33R or different suffix versions offering similar electrical characteristics. Verify pin compatibility and thermal performance before substitution.