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MT6308HP IC
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MT6308HP IC

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Product Details

Product Details:

- Part Number / Marking: MT6308HP / MT6308 HP

- Manufacturer: MediaTek Inc. (MTK)

- Function: RF Envelope Tracking (ET) PMIC / Modulated RF Power Amplifier Power Supply

- Architecture: Ultra-fast Dynamic Buck / Boost Switcher designed for 4G LTE & 5G NR Transmitters

- Control Interface: High-speed SPMI / I2C Bus control linked directly to MediaTek Baseband / Transceiver

- Protection Circuits: Built-in Overvoltage (OVP), Overcurrent (OCP), and Thermal Shutdown (OTP)

- Package Type: BGA / WLCSP (Ball Grid Array)

- Mounting Type: Surface Mount Technology (SMD BGA Soldering)

Usage:

- RF Envelope Tracking: Modulates the supply voltage of the RF Power Amplifier (PA) in real time according to the transmission signal's amplitude, maximizing transmission efficiency and cutting thermal dissipation.

- Target Devices:

  * Xiaomi: POCO X3 GT (Dimensity 1100 platform)

  * Redmi: Redmi Note 10 Pro 5G (China / MediaTek edition)

  * Other smartphones powered by MediaTek Dimensity 5G platforms featuring the MT6308 ET chipset.

- Common Fault Symptoms & Motherboard Repair:

  * Dead Phone (No Power): Internal short-circuit on the VPA / VDD_ET line causes total system rail pull-down, triggering PMIC shutdown.

  * High Battery Drain & Overheating: Excessive current leakage in the RF section near the PA shielding cans.

  * Network Faults (No Service / Searching / No 5G): Power amplifier fails to activate, leaving the phone unable to register on cellular networks.

  * Boot Loop / Auto-Restart: System restarts during boot sequence due to communication timeout with the ET controller.