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TPS2046BD is listed in the Power Distribution Switches, Load Drivers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC PWR SWITCH N-CHAN 1:2 8SOIC. Review the specifications below when checking this part for your BOM.
The TPS2046BD is a single-channel, current-limited power switch IC from Texas Instruments designed for USB power distribution. It operates within a supply voltage range of 2.7 V to 5.5 V and features an N-channel output capable of delivering up to 250 mA continuously with a fixed current limit of 500 mA. The device incorporates a maximum on-resistance of 70 mOhms to minimize power loss. Integrated protection mechanisms include overcurrent limiting, thermal shutdown, and under-voltage lockout (UVLO). It utilizes an active-low enable input and is housed in an 8-pin SOIC package, suitable for surface-mount applications across industrial temperature ranges.
Verify the specific suffix 'BD' against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration and temperature grade. Ensure the ordering part number matches the exact pin-out and electrical specifications required for the design. Cross-reference with the latest product change notification to confirm component availability and lifecycle status before finalizing procurement plans.
Select this component when a single-channel solution with moderate current capacity is required. The 250 mA continuous rating suits standard USB peripherals. Consider the 70 mOhm on-resistance for thermal performance. Evaluate the 3 ms turn-on time for system startup requirements. Compare against higher-current alternatives if load demands exceed specified limits.
This part belongs to the TPS204xB family of USB power switches. It shares architectural similarities with the TPS2041 and TPS2042 but offers distinct current ratings. The family is designed for portable and desktop computing applications requiring reliable power distribution. It complements other TI power management solutions by providing simple, integrated control for load switching.
The TPS2046ADR is a documented substitute variant within the same series. Verify compatibility regarding package dimensions and electrical parameters before substitution.
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