MT6308P IC

Product Details
Product Details:

- Part Number: MT6308P (Related Family Variants: MT6308HP, MT6308MP)

- Manufacturer: MediaTek Inc. (MTK)

- Target SoC Platforms:

* MediaTek Dimensity 5G Series (Dimensity 800, Dimensity 820, Dimensity 1100, Dimensity 1200)

- Function:

* High-Speed Envelope Tracking (ET) Modulator for RF Power Amplifiers

* Auxiliary Synchronous Buck Converter / Sub-PMIC for Processor Logic Rails

- Internal Architecture & Features:

* Dynamic real-time supply voltage tracking for 4G LTE & 5G NR RF Power Amplifiers (VET / VPA rails)

* High-efficiency DC-DC synchronous buck switching stages to minimize thermal losses during 5G transmission

* High-speed serial control interface (MIPI RFFE / I2C) for fast communication with the transceiver and baseband

* Integrated multi-level protection: Overvoltage Protection (OVP), Overcurrent Protection (OCP), Thermal Shutdown

- Package Type: Compact BGA / WLCSP (Wafer-Level Chip-Scale Package)

- Stencil Compatibility: Amaoe Universal MTK PMIC / MTK 5G RF Series BGA Stencil (0.12mm)

- Recommended Solder Paste: 183°C Leaded Solder Paste

Usage:

- Application in Mobile Motherboards:

* Primary role: Regulates dynamic high-current voltage rails for RF transmit power amplifiers, preventing excessive battery drain during 5G/4G connectivity.

* Secondary role: Generates dedicated low-voltage auxiliary rails for CPU/AP subsystems in multi-PMIC architectures.

- Compatible Smartphone Models:

* Xiaomi / Redmi / POCO: Redmi 10X 5G, Redmi 10X Pro 5G, POCO X3 GT (Dimensity 1100), and related 5G variants

* Oppo / Realme: Various Dimensity-powered 5G mid-range handsets

* Vivo / Samsung: Selected MediaTek Dimensity 5G series motherboard designs

- Common Fault Symptoms & Hardware Troubleshooting:

* Secondary Line Short / Dead Handset:

- VPA / VSYS / VET capacitor lines around the IC shorted to ground, drawing current on the DC power supply immediately or freezing boot current at low milliamps.

* No Network / "No Service" / 5G Signal Loss:

- Baseband and transceiver are functional, but phone fails to register on network or search fails due to missing or distorted VET/VPA voltage to the Power Amplifier.

* Call Drop / Instant Reboot on Outgoing Call:

- Handset operates normally on Wi-Fi, but reboots immediately when a cellular call is placed or high-bandwidth 5G upload initiates, caused by voltage collapse across a degrading MT6308P buck stage.

* Extreme Motherboard Overheating during Cellular Data:

- Noticeable localized heat spot under the RF shielding frame when mobile data is enabled.