Package and board integration — 36-WLP, 2.758 mm square
The MAX77787JEWX+ ships in a 36-WFBGA, WLBGA package — a 2.758x2.758 mm wafer-level ball-grid array with 36 balls. Surface-mount assembly with a standard lead-free reflow profile per JEDEC J-STD-020. The strip packaging is suitable for pick-and-place, but the 2.758 mm body means the nozzle vacuum pick area is tight — verify the placement head can handle a 2.8 mm part without tombstoning.
Charger function and battery chemistry fit
This is a 14V input, 3A USB Type-C charger IC with a maximum charge current of 3.15A, programmable via external resistor or I²C. The battery chemistry is Lithium Iron Phosphate (LiFePO4), with a pack voltage range of 0.3V to 14V — covering single-cell and multi-cell LiFePO4 stacks up to 4S. Fault protection includes over-current, over-voltage, and short-circuit detection — the IC enters hiccup mode on a hard short and latches off on sustained over-voltage above the 13.4V supply max. The programmable features (current, timer, voltage) let the firmware set the charge profile without external passives beyond the current-set resistor.
No pin-compatible second source or direct replacement is listed on the Analog Devices portfolio for this order code. The part is single-sourced; for a BOM hedge, the design should accommodate the 36-WLP footprint and the 13.4V supply max.