4 Pin Failure Mode Analysis (Pin FMA)

This section provides a failure mode analysis (FMA) for the pins of the TPS7A21-Q1 (VSON, WSON (DSG0008B), and WSON (DSG0008A) packages). The failure modes covered in this document include the typical pin-by-pin failure scenarios:

• Pin short-circuited to ground (see Table 4-2, Table 4-10, and Table 4-10)
• Pin open-circuited (see Table 4-3, Table 4-11, and Table 4-11)
• Pin short-circuited to an adjacent pin (see Table 4-4, Table 4-12, and Table 4-12)
• Pin short-circuited to supply (see Table 4-5, Table 4-13, and Table 4-13)

Table 4-2 through Table 4-13 also indicate how these pin conditions can affect the device as per the failure effects classification in Table 4-1.

Following are the assumptions of use and the device configuration assumed for the pin FMA in this section:

• Device operates at free-air temperatures between -40°C and 150°C.
• Device operates at an input voltage of at least 2V and no more than 6V.
• Device operates according to all recommended operating conditions, and the absolute maximum ratings in the device data sheet are not exceeded.