Fully Integrated VCC and Vpp Switching for
Dual-Slot PC Card Interface
P2C 3-Lead Serial Interface Compatible With
CardBus Controllers
3.3 V Low-Voltage Mode
Meets PC Card Standards
RESET for System Initialization of PC Cards
12-V Supply Can Be Disabled Except During
12-V Flash Programming
Short Circuit and Thermal Protection
30-Pin SSOP (DB) and 32-Pin TSSOP (DAP)
Compatible With 3.3-V, 5-V and 12-V PC Cards
Low rDS(on) (140-mΩ 5-V VCC Switch; 110-mΩ
3.3-V VCC Switch)
Break-Before-Make Switching

description
The TPS2206 PC Card power-interface switch
provides an integrated power-management solution
for two PC Cards. All of the discrete power
MOSFETs, a logic section, current limiting, and
thermal protection for PC Card control are
combined on a single integrated circuit (IC), using
the Texas Instruments LinBiCMOS process.
The circuit allows the distribution of 3.3-V, 5-V,
and/or 12-V card power by means of the P2C
(PCMCIA Peripheral-Control) Texas Instruments
nonproprietary serial interface. The current-limiting
feature eliminates the need for fuses, which
reduces component count and improves reliability.
The TPS2206 is backward compatible with the
TPS2202 and TPS2202A, except that there is no
VDD connection. Bias current is derived from
either the 3.3-V input pin or the 5-V input pin. The
TPS2206 also eliminates the APWR_GOOD and
BPWR_GOOD pins of the TPS2202 and
TPS2202A.
The TPS2206 features a 3.3-V low-voltage mode that allows for 3.3-V switching without the need for 5 V. This
facilitates low-power system designs such as sleep mode and pager mode where only 3.3 V is available.