MT6315FP IC
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Product Details
Product Details:
- Part Number: MT6315FP
- Sibling Variants: MT6315NP, MT6315OP, MT6315BP, MT6315TP, MT6315QP
- Manufacturer: MediaTek Inc. (MTK)
- Function: Secondary Power Management IC / 4-Phase Synchronous Step-Down (Buck) DC/DC Converter
- Output Current Capacity: Up to 5A per phase dedicated to CPU & GPU core power delivery
- Bus Communication: High-speed SPMI / I2C serial control with Remote Differential Voltage Sensing
- Safety Features: Integrated Over-Temperature Protection (OTP), Over-Current Protection (OCP), and Under-Voltage Lockout (UVLO)
- Package Type: Fine-Pitch BGA / WLCSP (Ball Grid Array)
- Mounting Type: Surface Mount Technology (SMD BGA Soldering / Reballing)
Usage:
- High-Current Core Regulation: Takes the heavy electrical load off the primary PMIC by supplying regulated VCORE, VPROC, and VGPU rails directly to the application processor during intensive tasks.
- Target Devices (Multi-Brand 5G Support):
* Xiaomi / Redmi: Redmi Note 12 Pro 5G, Redmi Note 11 series (MediaTek variants), Redmi K-series
* Oppo / Realme: Oppo Reno series, Realme GT Neo (Dimensity editions), Realme 9/10 Pro+ series
* Infinix / Tecno: Infinix Zero 5G series, Tecno Camon / Phantom series
* Vivo / iQOO: Vivo V-series 5G, iQOO Z-series
* Other high-performance smartphones powered by MediaTek Dimensity 5G SoCs.
- Common Fault Symptoms & Motherboard Diagnostics:
* Dead Phone (No Power / No Boot): Device does not power on; on DC power supply, it pulses low (0.05A–0.15A) and drops to zero due to missing CPU core voltage.
* Dead After Flash: System fails to boot after software flashing due to hardware communication timeout or missing boot voltage from the MT6315FP chip.
* VCORE / VPROC Inductor Short Circuit: Output coils around MT6315FP show a dead short to ground, causing instant heat dissipation upon voltage injection.
* Hang on Logo / Boot Loop: Voltage drop under CPU load prevents the Android operating system from fully initializing.
* Exact Suffix Requirement: Technicians must replace with the exact "FP" suffix; using NP or OP variants may fail to boot due to different preset startup voltages.
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