4 Pin Failure Mode Analysis (Pin FMA)

This section provides a failure modes analysis (pin FMA) for the pins of the TPS7B4260-Q1. The failure modes covered in this document include the typical pin-by-pin failure scenarios:

• Pin short-circuited to ground (see Table 4-2)
• Pin open-circuited (see Table 4-3)
• Pin short-circuited to an adjacent pin (see Table 4-4)
• Pin short-circuited to supply (see Table 4-5)

Table 4-2 through Table 4-5 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.
• The ADJ/EN pin is driven from an external source.
• Device operates at an input voltage of at least 3.3V and no more than 40V.
• Device operates according to all recommended operating conditions, and the absolute maximum ratings in the data sheet for the device are not exceeded.