ISL9240

Buck-boost charger controller (MacBook Pro A1502). Generates PP3V42_G3H.

Appears in 2 guide(s)

MacBook Pro A1502 / 820-3476 / 820-4924 — Level 3 Repair Guide 820-3476
ReferenceU7190
PartISL9240 (regulator)
FunctionGenerates PP3V42_G3H from PPDC_IN
RailsPP3V42_G3H
⚠ Failure
Corroded R7121/R7122 (feedback 10kΩ) → PP3V42 absent. 820-3476 fault.
MacBook Pro A1989 / 820-00850 — Level 3 Repair Guide 820-0085
ReferenceU7000
PartISL9240 (Renesas, QFN)
FunctionCharger / Main PMIC. Generates PPBUS via L7030 and two MOSFET pairs
RailsPPBUS_G3H battery charging
⚠ Failure
PPBUS absent despite 20V present. Reflow with flux often sufficient (oxidation).
This component appears in these symptom diagnoses
→ No Power→ No Charging
Related IC family
ISL6259 — predecessor PMIC on older MacBooksSMC — receives charger status