TPS2042BDRBT

Power Distribution Switches, Load Drivers Overview

The TPS2042BDRBT is a dual-channel, current-limited power distribution switch manufactured by Texas Instruments. It features an N-channel MOSFET configuration with a typical on-resistance of 70 milliohms and supports a continuous output current of up to 500mA per channel. The device operates within a supply voltage range of 2.7V to 5.5V and includes integrated fault protection mechanisms such as fixed current limiting, thermal shutdown, and under-voltage lockout (UVLO). Packaged in an 8-SON (3x3) surface-mount format, it is designed for efficient power management in space-constrained applications.

Power Distribution Switches, Load Drivers Feature Summary

• Dual-channel high-side power switching with independent control inputs
• Integrated fixed current limit and thermal shutdown protection
• Low on-resistance N-channel MOSFET architecture for minimal power loss
• Under-voltage lockout prevents operation below specified thresholds

Power Distribution Switches, Load Drivers Applications

• USB hub power distribution and port protection
• Peripheral device hot-swapping interfaces
• Battery-powered equipment load switching
• Industrial control system power sequencing

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'BT' corresponds to the 8-SON package and tape-and-reel orientation required for your assembly line. Confirm that the active-low enable logic aligns with your system's control signals. Ensure the thermal performance requirements are met given the small footprint and limited heat dissipation area of the 8-SON package during continuous high-current operation.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when dual-channel isolation is required within a compact form factor. The 70mOhm on-resistance offers a balance between conduction losses and cost compared to lower-resistance alternatives. Consider the 500mA current limit for standard peripheral loads rather than high-power bus applications. Verify compatibility with 2.7V to 5.5V logic levels for seamless integration into existing microcontroller or host systems.

Power Distribution Switches, Load Drivers Part Context

This part belongs to the TPS204x family of USB power switches, which provides current-limited power distribution solutions. It shares architectural similarities with the TPS2041 (single channel) and TPS2043/TPS2044 (quad channel) variants. The B-series designation typically indicates specific electrical characteristics and packaging options within the broader product line, focusing on robust protection features for portable electronics.

Power Distribution Switches, Load Drivers Replacement Considerations

The TPS2042BDG4 is a tube-packaged alternative within the same functional family. For single-channel needs, the TPS2041 series may serve as a substitute. Quad-channel requirements can be addressed by the TPS2044 series. Always verify pin-to-pin compatibility and parameter tolerances before substituting.