TPS61131PWR

Overview

The TPS61131PWR is a high-efficiency SEPIC (Single-Ended Primary Inductor Converter) switch-mode power supply IC manufactured by Texas Instruments. It integrates a power switch and control circuitry to provide a regulated 3.3V output from input voltages that may be higher, lower, or equal to the output voltage. The device achieves up to 90% efficiency, making it suitable for battery-powered applications where input voltage fluctuates significantly.

Feature Summary

• Supports SEPIC topology for flexible input-to-output voltage relationships
• Integrates internal power switch for compact design
• Optimized for high efficiency across wide input ranges

Applications

• Portable devices with single-cell lithium-ion batteries
• Industrial handheld instruments
• Medical equipment requiring stable regulation from varying sources

Procurement Notes

Verify the package type matches your PCB footprint requirements. Confirm the suffix 'PWR' indicates the correct tape-and-reel packaging variant. Ensure the operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when the input voltage source varies above and below the required output level. It is appropriate for designs prioritizing efficiency over minimal component count in SEPIC configurations. Evaluate thermal performance under maximum load conditions to ensure reliable operation within the specified temperature limits.

Part Context

This part belongs to Texas Instruments' family of DC-DC converters designed for portable electronics. It complements other regulators like the TPS61098 series, offering specific advantages in SEPIC applications where buck or boost topologies alone are insufficient due to input voltage variability relative to the output requirement.

Replacement Considerations

Direct substitutes include the TPS610981DSET for similar low-input voltage SEPIC functionality. Verify pin compatibility and control interface similarities before swapping components in existing designs.