TPS2045P

Power Distribution Switches, Load Drivers Overview

The TPS2045P is a single-channel, high-side power distribution switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and delivers a maximum output current of 250 mA with a fixed current limit of 350 mA. The device features an 80 mΩ typical on-resistance in an 8-PDIP through-hole package. Integrated protection mechanisms include fixed current limiting, thermal shutdown, and under-voltage lockout (UVLO). It supports hot-plug applications with controlled rise times and includes a status flag for fault indication.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates a single N-channel MOSFET with built-in fault protection circuitry
• Provides active current limiting and thermal shutdown to safeguard downstream loads
• Features a status flag output that indicates when the load current exceeds the limit or temperature thresholds are breached

Power Distribution Switches, Load Drivers Applications

• Hot-plug power distribution for peripheral devices
• USB port power switching and management
• Battery-powered equipment load protection

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific package type required for your design, as the TPS2045P utilizes an 8-pin PDIP through-hole configuration. Confirm that the component status is active, noting that related variants may be obsolete. Ensure compatibility with your board's thermal dissipation requirements given the through-hole mounting style. Cross-reference the manufacturer part number against official distributor catalogs to confirm availability and lead times before finalizing procurement plans.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when a robust through-hole solution is preferred over surface-mount alternatives for power switching applications. The 80 mΩ on-resistance offers low conduction losses compared to standard switches. Consider the integrated status flag if system monitoring of fault conditions is necessary. Evaluate the 250 mA continuous current rating against peak load demands to ensure adequate headroom for reliable operation.

Power Distribution Switches, Load Drivers Part Context

This device belongs to the TPS204x/5x family of USB power distribution switches designed for protecting and controlling power delivery. Unlike surface-mount versions such as the TPS2045AD, the TPS2045P provides a through-hole option suitable for prototyping or specific mechanical constraints. It serves as a direct replacement for discrete MOSFET solutions requiring integrated protection logic.

Power Distribution Switches, Load Drivers Replacement Considerations

The TPS2045PG4 is a RoHS-compliant version of this component. Verify pinout compatibility when substituting with other single-channel switches from the same series.