Hi Noby,
Thank you for reaching out. TPS3840 samples are avilable in the ti store at www.ti.com/.../samplebuy
The target RTM date is April 20, 2019
Best regards,
Antony Carvajales
Hi Vsevolod,
The 1.8V option is not currently released, as you mentioned, but you can reach out internally to our systems team to inquire about another option. In the meantime, for urgent projects, you can use the TPS3840. This device has more features…
Udai,
You can achieve higher level detection with a voltage divider circuit. While we do not outline it in the TLV803E datasheet, you can take a look at our TPS3840 datasheet in section 9.2.3 Design 3: Fast Start Undervoltage Supervisor with Level-shifted…
Hi Wayne,
The customer is looking for an active-high RESET output, which we have on a few of our devices. I recommend looking at the TPS3840, specifically the PH version of the device. This will provide the intended output topology.
Thanks, Abhinav…
Hi Carlo,
The best recommendation to mitigate this is to make sure both the positive and negative rails are up before enabling both of the LDOs'.
And indirect means of doing this might be to use something like the TPS3840 to detect the positive…
Saurabh,
Please see one of our newer parts, TPS3840 to satisfy your needs. There is a 2.9V and 3.0V variant currently released and more options on the way.
Thanks,
Abhinav.
Hi Paul,
This is intended behavior and occurs because of Vpor(power-on-reset). This isn't detailed well in the TPS3809 datasheet, but you can take a look at the TLV809E or TPS3840 for Vpor description. This is an unavoidable pulse that details the minimum…
Hi Jimmy,
You may need to delay enabling the TPS7A47/33 until after the negative rail comes up. Indirectly you can use something like the TPS3840 to wait for 100's of milli-seconds before enabling the TPS7A47 and TPS7A33. One idea for directly monitoring…
Toshihiro,
The "uncontrol area" during power up you mention is called the power on reset voltage (Vpor). The lowest Vpor device we have is TPS3840 with a Vpor of 0.2V for the push-pull output option. The VDD max is 10V so you need to use a resistor…
