ISL9239HI MacBook logic board charging chip

Overview

The ISL9239HI Charging Controller IC (commonly designated in schematics as U7000) is a SMBus buck-boost battery charger chip responsible for managing power intake, battery charging, and main power line generation on Intel-based MacBooks.

This critical power management chip communicates directly with USB-C port controllers (CD3215 / CD3217 series) to create the primary system voltage rail (PPBUS_G3H). Replacing a damaged ISL9239HI chip is the standard micro-soldering solution when liquid damage, short circuits, or voltage spikes cause battery charging failure or a dead logic board.

Key Features

• OEM-Grade Quality: High-precision IC designed for accurate current sensing and buck-boost power conversion.

• Core Rail Generation: Responsible for creating the essential PPBUS_G3H main power rail across the board.

• Intelligent Battery Management: Controls charge current, voltage regulation, and power path switching between the USB-C charger and battery.

Compatible MacBook Models

• MacBook Pro 13-inch:

  • A1706 (Late 2016 / 2017)

  • A1708 (Late 2016 / 2017)

  • A1989 (2018 / 2019)

  • A2159 (2019)

• MacBook Pro 15-inch:

  • A1707 (2016 / 2017)

  • A1990 (2018 / 2019)

• MacBook Air 13-inch:

  • A1932 (2018 / 2019)

Compatible Logic Board Numbers

• 820-00239, 820-00244, 820-00281, 820-00840, 820-00850, 820-00875, 820-00923, 820-01521, and related platforms.

Technical Specifications

• Part Markings / MPN: ISL9239HI / ISL9239H / ISL9239

• Schematic Designation: U7000

• Package Type: BGA / QFN

• Condition: Brand New

Note for Technicians: Soldering and installing power controller ICs requires professional micro-soldering tools, quality flux, and hot air rework experience. Always verify surrounding current-sensing resistors and MOSFETs for shorts before powering on the board.