3Z 3Zxxx Samsung Charging IC (3ZCF1 / 3Zxxx / 3ZAxx / 3ZCxx)

Technical Specifications:

• Model Code: S2MU004 (S2MU004X).

• Marking: 3Zxxx (Covers 3ZHN2, 3ZAxx, 3ZCxx, 3ZDxx).

• Package: 56-Pin BGA.

• Function:

  • In Newer Models (S21/S22/Fold): Acts as OVP / Interface PMIC / Secondary Charging Chip.

  • In Older Models (J7/A5): Acts as the Main Charging & Power IC.

Common Fixes:

1. Dead Set: Critical power failure in J7/A5 series.

2. Fast Charging Issues: Fixes USB detection and fast charging negotiation errors in S21/S22 series.

3. High Consumption: Solves leakage current on the V_BUS line.

Compatibility: New Generation (Flagships):

• Galaxy S22 Series: S22 (SM-S901B), S22+, S22 Ultra.

• Galaxy S21 Series: S21 (G991), S21+ (G996U), S21 Ultra.

• Foldables: Galaxy Fold 2, W2020.

• Note Series: Galaxy Note 20 / Ultra.

Classic Generation:

• Galaxy J7 Pro, J5 Pro.

• Galaxy A5 (2017), A7 (2017).