Power Management ICs (PMIC / PMU)
343S00394 Power Management IC for iPad Air 4 (2020)
$12.38
from $11.14 at 10+
IC Chips
Power Management ICs (PMIC / PMU)
Power management ICs (PMIC/PMU), regulators and load switches for logic board repair on iPhone, iPad, Samsung Galaxy and MacBook.
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Popular devices
- iPad Air (5th generation)3
- MacBook Pro 14-inch 2021 (A2442)2
- MacBook Pro 13-inch, Two Thunderbolt 3 Ports (A2159)2
- iPad mini 52
- MacBook Pro 13-inch, Four Thunderbolt 3 Ports (A1989)2
- iPad Pro 10.5-inch2
- iPad Pro 9.7-inch2
- MacBook Pro 14-inch 2023 (A2779)1
- MacBook Pro 14-inch M3 (A2918)1
- MacBook Air 13-inch M2 (A2681)1
- iPad (10th generation)1
- iPad (9th generation)1
More in IC Chips
Buying guide
How to choose a power IC
Identify which supply is missing. Main PMU faults usually show as no boot or abnormal current draw; camera PMU and Chestnut display PMU faults affect only the camera or display.
Match the marking and U-number. e.g. 338S00120 is the main PMU for iPhone 6S/6S Plus (U2000); TPS65657B0 is the Chestnut display PMU for iPhone 13 Pro/13 Pro Max.
MacBook power stages. Buck regulators, MOSFETs and load switches are listed with package type (QFN, BGA) – check it against the board.
Before you replace
Check for shorts on the output rails with a DC power supply and a thermal camera, and replace shorted capacitors first. Use a preheater to reduce stress on the board when removing large PMICs.
FAQ
What does a PMIC do in a phone?
The power management IC converts battery power into the various voltage rails the processor, memory and peripherals need, and controls power-up sequencing.
What is a Chestnut IC?
Chestnut is the name used for the iPhone display power IC (e.g. 65730A0P, TPS65656A2). A faulty Chestnut typically causes no display or no backlight while the phone still works.
Do power ICs need reballing?
Yes, BGA power ICs need new solder balls if they are not supplied reballed. Use the stencil for the matching IC package.
