PCMCIA slot power switch — 4 outputs, 103 mOhm Rds(on)
The Texas Instruments TPS2206IDAPR is a PCMCIA switch designed to manage power for PC Card slots in laptops, embedded systems, and legacy docking stations. It integrates four high-side outputs with a 3:4 input-to-output ratio, delivering up to 1 A per output across load voltages of 3.3 V, 5 V, and 12 V. The typical on-resistance of 103 mOhm sets the conduction loss floor — at 1 A load, expect roughly 103 mV drop and 103 mW dissipation per channel, which the 32-HTSSOP exposed pad helps sink to the PCB ground plane.
Fault protection and status flag
Built-in fault protection includes fixed current limiting and over-temperature shutdown. A status flag output signals fault conditions to the host controller, allowing software to sequence a card removal or retry. The serial interface controls output enable and reports status, reducing the GPIO count needed on the system controller.
No official successor or last-time-buy date is recorded in the available documentation.