Hi,
We've looked at two TPS7A8033DRBT parts, one of them having been never used before, and have measured the SNS pin internally shorted (~0.4 Ohms) to the GND pin. With the used part on our board that has SNS connected to OUT (as per figure 32 on page 15), it shorted out the LDO output. When we left the SNS pin unconnected on the board, OUT was stable and at ~4.9 V as we expected after looking at the internal block diagram in the spec. Looking again at the block diagram that shows the sense current at 2.5 uA after the top leg of the input resistor tree (see page 13), we were expecting a large resistance from the SNS pin to the GND pin.
Would you please help us sort this out? Has this situation been seen before? Your speedy reply would be most helpful.
Thanks, Eric
