MT6359VKP IC

Product Details
Product Details:

- Part Number: MT6359VKP

- Sibling Variants: MT6359P, MT6359VNP, MT6359VPP

- Manufacturer: MediaTek Inc. (MTK)

- Function: Primary System Power Management Integrated Circuit (Main PMIC)

- Regulators Architecture:

* Multi-Phase Synchronous Step-Down DC/DC Buck Converters (providing dedicated high-current rails to CPU VCORE, VPROC, GPU, VDRAM, and Modem)

* Extensive Array of Precision Low-Dropout Regulators (LDOs) for Camera Sensors, Display, Audio Codec, Storage (eMMC/UFS), and Baseband

- System Integration:

* Central Power-Up & Reset Sequencing Controller (PMIC_RESET_B)

* Real-Time Clock (RTC) 32.768 kHz oscillator and alarm logic

* Battery Fuel Gauge & Real-Time Battery Voltage/Current Monitoring

* Hardware Thermal Monitoring & Automatic Thermal Shutdown

- Package Type: Fine-Pitch BGA / WLCSP

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

Usage:

- Central Motherboard Power Management: Converts main battery/system bus voltage into low, noise-free, and dynamically scalable core rails for MediaTek Helio G90T, P90, and Dimensity mobile architectures.

- Target Devices & Compatible Models:

* Xiaomi / Redmi: Redmi Note 8 Pro (MediaTek Helio G90T platform), Redmi Note 8 (MTK variants)

* Oppo / Realme: Oppo Reno 2, Oppo Reno Z, Realme Narzo 20 Pro, Realme Narzo 30

* Infinix / Tecno: Infinix Zero 8, Zero 8i, Tecno Camon 16 Premier

* Vivo: Vivo NEX 3 (MTK version), Vivo S-series

- Common Fault Symptoms & Motherboard Diagnostics:

* Dead Phone (No Power / Low Pulse): Phone does not boot or vibrate; on DC bench power supply, pressing the power button shows a small pulse (0.03A–0.08A) and immediately falls back to zero due to missing CPU core voltages or an incomplete power sequence.

* Gaming Overheating & Sudden Shutdown: Extreme heat dissipation near the MT6359VKP shield during gaming (e.g. PUBG) leading to thermal shutdown or internal solder ball fatigue.

* Direct VPH_PWR / VBAT Short Circuit: Internal breakdown of the high-side switching FETs creates a short to ground, causing the DC power supply to trip or beep immediately.

* Repeated Flashing Failures / Boot Loop: Handset is stuck in a boot loop or disconnects during software flashing because the PMIC cannot supply stable VCORE/VDRAM voltage during intense flashing operations.

* High Standby Leakage: Battery drains rapidly even when the phone is idle or screen is turned off, caused by internal leakage across one of the secondary LDO rails.