DALLAS (July 19, 1996) -- Two new PC Card power-interface switches featuring accelerated performance and lower cost are now available from Texas Instruments (TI). The new switches provide a PCMCIA integrated power-management solution for interfacing to PC Cards used in applications such as desktop and portable computers, PDAs and any other applications using PC Cards.
The TPS2205I features a parallel control interface that is compatible with controllers from TI, Cirrus Logic, Inc., and Intel Corporation, while the TPS2206I features a serial control interface that is compatible with CardBus™ controllers. They are backward compatible with the previous generation TPS2201 and TPS2202A PCMCIA power interface switches. Built using TI's LinBiCMOS™ process, these devices allow the distribution of 3.3-V, 5-V and/or 12-V card power to PCMCIA cards.
The TPS2205I and TPS2206I are optimized for the best cost and on resistance, or rDS(on), performance while meeting the proposed industry standard for a 3 Watt (600mA) limit to the amount of power a PC Card can draw. Significantly lowering rDS(on) allows the devices to drive higher current and maintain output voltage within regulation for the PC Card. Both devices feature a 3.3-V low-voltage mode of operation which allows 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.
Fully integrated Vcc and Vpp Fewer glue components to design the switching for dual-slot PC Card PCMCIA power interface. Better reliability. Interface. Generally a lower cost interface. Compatible with industry standard Provides multiple controller options. controllers from TI, Cirrus, and Intel. 3.3-V low-voltage mode. Prolongs battery operating time. Meets PC Card standards. Helps to insure compatibility. 12-V supply can be disabled Enables the designer to save even more except during 12-V flash programming. critical battery power. Short circuit and thermal Eliminates the need to use unreliable protection. and expensive fuses in the power interface circuitry. Space-saving 30 pin SSOP Facilitates design in the space critical packaging (DB or DF). environments such as laptop or notebook computers and PDAs. Compatible with 3.3-V, 5-V, and Compatible across all of the different current 12-V PC Cards. PCMCIA cards and their requirements. Low rDS(on) switches. Gives the engineer more power at the card and less power loss in the switch.
Applications for the TPS2205I and TPS2206I include:
The TPS2205I and TPS2206I are now available through Texas Instruments and its authorized distributors. They are in a space-saving 30-pin Shrink Small-Outline Package (SSOP), (DB or DF). The suggested retail price for the TPS2205I is $3.61 and $3.87 for the TPS2206I, both in quantities of 1,000.
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Literature Id #s: SLVS128B, SLVS138
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