Texas Instruments announced a highly integrated power management chip for dual-slot personal computing cards used in notebook and desktop computers, personal digital assistants (PDAs), digital cameras, set-top boxes and bar-code scanners. All discrete power MOSFETS, a logic section, current limiting and thermal protection for PC card control are combined onto a single piece of silicon, giving system power designers a high level of integration to reduce component count and system cost.
The TPS2206A PC CardBusTM power-interface switch allows the controlled distribution of 3.3V, 5V and 12V to each PC card socket. The current-limiting feature and thermal-protection features eliminate the need for fuses, which improves reliability. The TPS2206A incorporates a reset function to help alleviate system errors, and enables PC card initialization and system reset. Reset is accomplished by grounding the Flash memory programming voltage outputs, which discharge residual card voltages.
Packaging, Pricing and Availability
Offered at a lower price than TIґs popular TPS2206 device, the TPS2206A switch is available in volume from TI and its authorized distributors, and comes in a 30-pin SSOP package. Suggested resale pricing in quantities of 1,000 is $2.20.
Features
- Fully Integrated V CC and V PP Switching for Dual-Slot PC Card Interface
- P2C (PCMCIA Peripheral) 3-Lead Serial Interface
- Meets PC Card Standard, Compatible with 3.3V, 5V and 12V PC Cards
- RESET for System Initialization of PC Cards
- 12V Supplies Can Be Disabled Except During 12V Flash Programming
- Short-Circuit and Thermal Protection
- Low r DS(on) 95m ohm, 3.3V Vcc Switch
- Break-Before-Make Switching
- 30-Pin SSOP (DB)
- -40єC to 85єC Ambient Operating Temperature Range
