TPS627451DSSR

Voltage Regulators - DC DC Switching Regulators Overview

The TPS627451DSSR is a Texas Instruments step-down DC/DC converter featuring ultra-low quiescent current of 360 nA. It operates with an input voltage range of 2.2 V to 5.5 V and provides a programmable output voltage between 1.3 V and 2.8 V in 100 mV steps via four VSEL pins. The device delivers up to 300 mA output current with DCS-Control topology for fast transient response. It functions efficiently at load currents below 10 µA, utilizing a small 2.2 µH inductor and 10 µF output capacitor within a compact 12-pin WSON package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Ultra-low static current consumption of 360 nA enables extended battery life in energy-constrained applications
• Integrated load switch with slew-rate control allows safe power distribution to subsystems
• Automatic transition to 100% duty cycle mode eliminates output ripple when input approaches output voltage
• Programmable output voltage selection via dedicated pins removes requirement for external resistive dividers

Voltage Regulators - DC DC Switching Regulators Applications

• Bluetooth Low Energy wireless modules
• Zigbee sensor networks
• Industrial metering equipment
• Energy harvesting systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure the selected package variant matches the PCB footprint requirements. Confirm that the operating temperature range aligns with the intended environmental conditions. Cross-reference the datasheet revision history for any design changes affecting electrical parameters or mechanical dimensions prior to finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when system power budgets require minimal standby current consumption below 10 µA. The integrated load switch simplifies power sequencing for temporary subsystem activation. Verify that the required output voltage falls within the 1.3 V to 2.8 V range defined by the VSEL configuration. Ensure the application can accommodate the specified input voltage limits and utilizes compatible passive components for optimal stability.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the TPS6274x family of ultra-low power buck converters designed for portable electronics. It shares the DCS-Control architecture with siblings like the TPS62740 but offers distinct output voltage ranges optimized for specific logic levels. The family emphasizes miniaturization through small solution sizes and low component counts, targeting battery-operated devices where space and efficiency are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

TPS62740DSST serves as a functional substitute within the same series, offering similar low-power characteristics and DCS-Control topology. Verify that the alternative part supports the required output voltage range and load current specifications for the specific application design.