TPS2051CDBVR

Power Distribution Switches, Load Drivers Overview

The TPS2051CDBVR is a single-channel, current-limited USB power distribution switch manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an output current of up to 500 mA. The device features a typical on-resistance of 97 mΩ and a fixed current limit threshold of 2.9 A. Packaged in a surface-mount SOT-23-5 (SC-74A) housing, it includes high-level active enable control with output discharge and reverse blocking capabilities. The operational temperature range spans from -40°C to +85°C.

Power Distribution Switches, Load Drivers Feature Summary

• Provides fixed current limiting to protect downstream loads and upstream power sources during fault conditions.
• Integrates controlled rise and fall times to minimize inrush current during turn-on and turn-off transitions.
• Includes integrated output discharge circuitry to rapidly remove charge from capacitive loads upon shutdown.

Power Distribution Switches, Load Drivers Applications

• USB port and hub power distribution
• Notebook and desktop computer systems
• Set-top boxes and digital television equipment

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'C' indicates the 4.5V–5.5V operating range and 2.9A current limit variant. Confirm the 'DBVR' designation corresponds to the SOT-23-5 package and tape-and-reel delivery format. Ensure compliance with RoHS3 standards and MSL level 2 moisture sensitivity requirements for your assembly process.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when designing for standard 5V USB applications requiring precise current limiting without external sensing resistors. It is suitable for protecting ports against short circuits and overloads while maintaining low conduction losses. Consider the SOT-23-5 footprint constraints and thermal dissipation capabilities relative to your PCB layout.

Power Distribution Switches, Load Drivers Part Context

This part belongs to the TPS20xxC series of power distribution switches designed specifically for USB applications. Unlike the TPS20xxB series which supports lower voltages down to 2.7V, the C-series is optimized for the 4.5V–5.5V range. It shares functional similarities with other single-channel switches but offers distinct electrical thresholds tailored for standard USB power rails.

Power Distribution Switches, Load Drivers Replacement Considerations

Direct substitutes include the TPS2051BDBVR, though it supports a wider input voltage range (2.7V–5.5V). Other family members like the TPS2052 or TPS2054 offer multiple channels. Verify pinout compatibility and current limit thresholds before swapping.