A2485 charging chip 489900A4

Overview

The RAA489900A4 / 489900A4 Charging Controller IC (schematic designated location U5200) is the primary buck-boost battery charger controller chip integrated into modern Apple Silicon MacBook logic boards.

This micro-IC governs the system’s power delivery switching, battery charging process, and primary power rail creation (PPBUS_AON / PPBUS_G3H). Replacing the damaged 489900A4 IC is the standard component-level fix when a liquid spill, electrical spike, or component failure leaves the logic board unable to charge the battery or power on properly.

Key Features

• OEM-Grade Precision Chip: Engineered to exact specifications for stable power regulation and fast battery charging.

• Core Power Management: Handles the primary buck-boost charging process and controls main power rail generation.

• Direct Micro-Soldering Replacement: Restores power handshake, USB-C 20V negotiation capability, and battery charging logic.

Compatible MacBook Models

• MacBook Pro 14-inch:

  • A2442 (2021 – M1 Pro / M1 Max)

  • A2779 (2023 – M2 Pro / M2 Max)

  • A2918 / A2992 (2023 – M3 / M3 Pro / M3 Max)

• MacBook Pro 16-inch:

  • A2485 (2021 – M1 Pro / M1 Max)

  • A2780 (2023 – M2 Pro / M2 Max)

  • A2991 (2023 – M3 Pro / M3 Max)

• MacBook Air:

  • A2681 (2022 – M2 13-inch)

  • A2941 (2023 – M2 15-inch)

  • A3113 / A3114 (2024 – M3 13-inch / 15-inch)

Technical Specifications

• Part Markings / MPN: 489900A4 / RAA489900 / RAA489900A4

• Schematic Designation: U5200

• Package Type: BGA (Ball Grid Array / QFN)

• Condition: Brand New

Note for Technicians: Replacing BGA integrated circuits requires specialized tools including hot air rework stations, quality micro-soldering flux, and experience in logic board repairs. Verify power rail diagnostics (e.g., checking for shorts on PPBUS_AON) prior to component installation.