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Compiler/TCA9535: TCA9535: No problem using TPS7A7100?

무성 김
Prodigy 50 points
Part Number: TCA9535
Other Parts Discussed in Thread: TPS7A7100,

Tool/software: TI C/C++ Compiler

hi,

I would like to use TPS7A7100 LDO in my board design.

I want to use I / O control as TCA9535.

I will try to use SMBUS type chip for the first time.

Is there any problem in controlling the TPA7A7100 chip with the TCA9535 chip?

  • 0
    TI__Guru 73541 points
    Hello user5407789,

    "Is there any problem in controlling the TPA7A7100 chip with the TCA9535 chip?"
    I don't see why not. Looking at TPS7A7100, the ViH and ViL are 1.1V and 0.5V respectively. TCA9535 should be able to drive this as long as you don't provide a really strong pull up resistor externally.

    The device (TCA9535) also starts off as a Hi-Z input so I recommend you either provide an external pull up or pull down resistor (10k should do) depending if you want the enable to be high or low upon start up.

    Thanks,
    -Bobby