343S00257 Power Management IC for iPad Pro 11 1st Gen (2018)

The first iPad Pro 11-inch uses several Apple power chips, and this 182-pin part is one of the mid-size ones. A board with a missing rail and an otherwise healthy main PMIC may well point here.

This is the Apple 343S00257 power management IC for the iPad Pro 11-inch 1st gen (A1980, A2013, A1934). The listing gives a pin count of 182. The 12.9-inch model from the same year uses a different 182-pin part, 343S00256.

Signs it could be failing

• A missing rail with inputs and enables present.

• No boot while the main PMIC works.

• A short traced to the chip.

• Cracked joints after the iPad was bent.

Bench notes

Find the chip by its marking and confirm what it supplies. Thin iPad Pro boards warp easily, so support the board well and use a preheater with a gentle profile.

After replacement, measure the rails and test boot, touch and charging. If the frame is bent, deal with that too, so the new joints aren't stressed. A quick check of the USB-C port and Apple Pencil charging is worthwhile on these models as well.