ST2S06BPQR

Voltage Regulators - DC DC Switching Regulators Overview

The ST2S06BPQR is a dual synchronous rectification step-down switching regulator from STMicroelectronics, designed for low-voltage digital core power. It operates within an input voltage range of 2.5 V to 5.5 V and provides two fixed 3.3 V outputs with an 800 mA current capability per channel. The device utilizes a 1.5 MHz current mode PWM topology to minimize external component size. Key features include an inhibit function, internal soft start, and thermal protection. It is housed in a compact 12-VQFN (4x4 mm) package with an exposed pad, suitable for surface mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual output configuration with synchronous rectification for improved efficiency
• Inhibit function allows for precise power sequencing control
• Internal soft start limits inrush current during power-on
• High switching frequency enables the use of small passive components

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage digital cores in optical disc drive applications
• Replacing high-current linear regulators to reduce heat dissipation
• General-purpose dual rail power supply for embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component status as this part may be obsolete or discontinued. Confirm availability through authorized distributors only. Ensure the 12-QFN package matches your PCB footprint. Check RoHS compliance documentation for regulatory requirements. Validate that the 3.3V fixed output meets your system design specifications before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated rails are required from a single input source. The 800 mA output current supports moderate load demands. The 1.5 MHz frequency is optimal for space-constrained designs requiring small inductors. Consider the inhibit pin functionality if power sequencing is critical. Ensure input voltage stays within the 2.5 V to 5.5 V operational range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the ST2S06 family of dual step-down converters. It shares architectural similarities with the ST1S06 but offers dual channels instead of a single high-current output. The 'B' suffix indicates the presence of an inhibit function, distinguishing it from versions with reset capabilities. It is engineered to replace linear solutions in environments where thermal management is challenging.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other STMicroelectronics dual buck converters with similar pinouts and electrical characteristics. Verify that replacement parts support the same 3.3 V fixed output and 800 mA current rating. Ensure the alternative device also features synchronous rectification and compatible packaging dimensions.