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  • Wiki Page: TPS3126E12 RESET output voltage.

    Michael Day
    Q: TPS3126E12 RESET output voltage. by 1454843 Dear Team, Customer is asking why the open-drain type output voltage is limited to Vmax = Vdd+0.3V ? Can we explain this to customer ? Thanks. Q: Re: TPS3126E12 RESET output voltage. by 10449 The TPS3126 /RESET pin has an internal diode...
    on Dec 31, 2010

  • Forum Post: Re: TPS3808

    Chris Glaser
    Yes, this is the correct parameter. Typically, a 1 ns pulse width at /MR with create a RESET.
    on Jan 3, 2011

  • Forum Post: Re: TPS3838E18 open-drain !RESET: allowable pull-up resistor values

    Chris Glaser
    I do not recommend using a resistor that small with the TPS3838. Using a 3k resistor would violate the recommended operating conditions in the TPS3838 datasheet which specifies a minimum value of pull up resistance. This is only a recommended operating condition because it is not necessary under some...
    on Feb 1, 2011

  • Wiki Page: TPS3828-33 watchdog failed

    Michael Day
    Q: TPS3828-33 watchdog failed by 1170817 Hi, I have a customer using the TPS3828-33 and he have a problem that the reset is not activated when the WDI pin is LOW. There are two cases: 1. If WDI stops toggle and stays HIGH then RESET will go active after 1,2 sec. 2. If WDI stops toggle...
    on Mar 9, 2011

  • Wiki Page: TPS3838J25 - can it be used at 3.3V instead of 2.5V

    Chris Glaser
    I see though that the datasheet has: VDD recommended operating condition to be form 1.6 v to 6 volt Therefore, if TPS3838J25 VDD becomes 3.3V , it is still below the recommended operating limit of 6V. Customer is wondering if that will cause any damage to it by raising the voltage to 3.3? Will is...
    on Mar 15, 2011

  • Forum Post: Re: TPS3828-33 Remaining Continuously in Reset (Reset# Does not go High)

    Chris Glaser
    Yes, the TPS3828 has an open drain reset output. This requires a pull-up resistor to go high. This is noted on page 1 of the datasheet. Yes, WDI may be left floating to disable it. This is noted on page 2 of the datasheet. I recommend replacing the TPS3828 with the TPS3823 which has a push pull...
    on May 4, 2011

  • Forum Post: Re: Open Drain Output of TPS3808G50

    Chris Glaser
    This is allowed. The RESET output can be pulled up to any voltage lower the maximum rating of 7V.
    on May 6, 2011

  • Wiki Page: TPS3818_Delay time tolerance

    Michael Day
    Q: TPS3818_Delay time tolerance by 1300154 What is the delay time tolerance of TPS3818? In this forum, I found out that there is a formula for calculating the delay time based on the CT pin charge current and threshold voltage. http://e2e.ti.com/support/power_management/svs_and_sequencers...
    on Jun 2, 2011

  • Wiki Page: TPS3510 FPO malfunction - delay time

    Michael Day
    Q: TPS3510 FPO malfunction in customer MP stage by 4339 Hi experts, We have TPS3510 issue. The issue is that the response time of FPO (Pin3) is too long than the normal parts when VS5 (Pin6) enter UVP condition. These failure parts have different response time. We also test these failure parts...
    on Jul 19, 2011

  • Forum Post: Re: Question for TPS3808 VDD level

    Darwin Fernandez
    Hello Joy, Welcome to the forums! The minimum voltage to power and operate the device is indeed 1.7V. However, as shown in the electrical characteristics of the datasheet, the minimum voltage to have a definite RESET (HIGH or LOW) is 0.8V. As you can see from the timing diagram, the RESET output...
    on Mar 7, 2012

  • Forum Post: Re: TPS3106 recover from brownout

    Darwin Fernandez
    Hi Peter, Thank you for recording the issue. We are currently looking into this. Do you also have a circuit schematic on the applicaiton? Regards, Darwin
    on Mar 7, 2012

  • Forum Post: Re: TPS3307-18 - Does not release reset on power up

    Darwin Fernandez
    Hi David, The SENSE voltages are above the threshold and VDD is still within the recommended operating voltage to power the device (despite the voltage droop) so it seems that this may not be the problem. How is the TPS3808 output (MR pin) connected? Is it pulled up to a voltage rail? Please...
    on Apr 10, 2012

  • Forum Post: UCD9081 I2C Address ISSUE

    Diljith Maviladeth
    Hi, I am using UCD9081 in below configuration(sch attached). We are seeing that, whatever address is driven on the ADDR pins, Ti's GUI always discover the device at address 0x60. The ADDR pin is driven from the back-plane geographical Address pins through a buffer. I probed the ADDR pins and...
    on Feb 20, 2013

  • Forum Post: UCD9090 Datasheet mistype?

    Alexey Grehov
    On page 26 of datasheet we have: ***************** Power-Supply Enables During reset, the GPIO pins are high-impedance except for FPWM/GPIO pins 17–24 , which are driven low. External pulldown or pullup resistors can be tied to the enable pins to hold the power supplies off during reset. The...
    on Mar 21, 2013

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