PCMCIA slot power switch — 95 mOhm Rds(on) and 1 A per channel
The Texas Instruments TPS2206ADB is a four-output high-side PCMCIA power switch distributing 3.3 V, 5 V, and 12 V rails to PC Card slots. Each output is rated for 1 A continuous, with a typical on-resistance of 95 mOhm.
Multi-voltage rail sequencing and fault handling
The switch accepts three load voltages — 3.3 V, 5 V, and 12 V — and routes them to four outputs in a 3:4 input-to-output ratio. A serial interface controls the output configuration, and the status flag reports fault conditions. Built-in current limiting (fixed threshold) and over-temperature protection shut down the output if a card draws excessive current or the die overheats, eliminating the need for external supervisory components.
SSOP-30 package — rework and footprint notes
The TPS2206ADB comes in a 30-pin SSOP package (5.30 mm body width, 0.209-inch pitch). It is a surface-mount part.