Hi Expert,
According to TL432LI item 10.2.1.1 design examples:
The TL432LI can operate under 2V on VKA .
Pls help to why it works, and any requirements need if need the VKA under 2V.
Best regards,
Eric Lai
Field Application Engineer
Texas Instruments Taiwan Limited
O: +886-2-2175-2582
M: +886-909-262-582
E-Mail:Eric.Lai @ti.com
Hi Eric,
The 10.2.1.1 design example is referring to the application schematic shown in Figure 20 in the datasheet. In this application, the TL431LI is operating in an open-loop setting. The low state (~2V on the output) is set by the characteristic value of VREF and its dependencies such as IKA, IREF, and temperature. See below:
For more information regarding the output voltage (VKA) in open loop configurations, please see app note:
https://www.ti.com/lit/an/slva987a/slva987a.pdf
Ben
