Core Function & System Integration
- Primary Role: Main USB / Lightning Power Delivery and battery charging control system.
- Logic Board Identifier: Commonly designated as U3300 on modern iPhone schematics.
- Predecessor Comparison: Functions similarly to the older “Tristar” (U2) family chips used in legacy devices.
- Key Architecture: Integrates directly with the system PMIC (Power Management IC) and the main application processor to broker voltage limits and safe fast-charging thresholds.
Technical Specifications
- Package/Form Factor: BGA (Ball Grid Array) micro-chip surface mount.
- Pin/Ball Count: Custom micro-pitch grid structure optimized for multi-layered logic boards.
- Power Capability: Engineered to support Apple’s USB Power Delivery (USB-PD) charging specifications, handling incoming power profiles ranging from standard 5V up to fast-charging 9V/14.5V configurations.
- Communication Interface: Utilizes bidirectional data protocols to authenticate the attached accessory and negotiate fast-charging capability cleanly.
Hardware Compatibility List
The SN2600B2 chip is drop-in compatible and cross-compatible across specific Apple smartphone series:
- Apple iPhone XS (Models: A1920, A2097, A2098, A2100)
- Apple iPhone XS Max (Models: A1921, A2101, A2102, A2104)
- Apple iPhone XR (Models: A1984, A2105, A2106, A2108)
Interchangability Notes
- Drop-in Equivalents: On schematics and components parts, SN2600B1 and SN2600B2 are often used interchangeably by micro-soldering technicians depending on logic board revisions.
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