TPS51980A PMU Power Supply Chip

Overview

The TPS51980A PMU Power Supply Controller IC (commonly designated as U7200, U7500, or U7000 in Apple schematic diagrams) is a dual-synchronous step-down (buck) controller chip. It plays a pivotal role in generating primary standby voltage rails across various Apple MacBook logic boards.

When a MacBook suffers liquid damage, power surges, or failure of the main standby rails (such as PP3V3_G3H or PP5V_S3/S5), replacing the faulty TPS51980A chip is the standard micro-soldering solution to restore power to the logic board.

Key Features

• OEM-Grade Component: High-precision power controller designed for accurate voltage regulation and stable power sequencing.

• Dual Buck Controller Logic: Manages key primary power rails essential for bringing the logic board out of standby into full S0 operational state.

• Over-Voltage & Thermal Protection: Built-in circuit protection features to safeguard connected logic board power lines.

Compatible MacBook Models

• MacBook Air 13-inch & 11-inch:

  • A1466 (2013–2017)

  • A1465 (2013–2015)

  • A1369 / A1370 (2011–2012)

• MacBook Pro 13-inch & 15-inch:

  • A1278 (2011–2012 Mid)

  • A1286 (2011–2012 Mid)

  • A1398 (2012–2015 Retina)

  • A1502 (2013–2015 Retina)

Compatible Logic Board Numbers

• 820-00165, 820-3437, 820-3435, 820-3209, 820-3115, 820-3332, 820-3476, and related platforms.

Technical Specifications

• Part Number / MPN: TPS51980A / TPS51980 / TPS51980ARGRR

• Package Type: VQFN-20 / QFN

• Schematic Location Identifiers: U7200, U7500, U7000

• Condition: Brand New

Note for Technicians: Replacing QFN/BGA power management chips requires professional micro-soldering tools, quality flux, and hot air rework station experience. Always check surrounding MOSFETs, current-sensing resistors, and ground pads for shorts prior to installing the new IC.