MT6322GA IC

Product Details
Product Details:

- Part Number: MT6322 (Full Marking: MT6322GA / MT6322GA/A)

- Manufacturer: MediaTek Inc. (MTK)

- Companion SoC Platforms: MediaTek MT6592 (True Octa-Core), MT6588 (Quad-Core)

- Function: Master Power Management Integrated Circuit (PMIC) with Integrated Switching Charger & Audio Codec

- Internal Architecture & Subsystems:

* Multi-Phase Synchronous Step-Down Buck Converters (VCORE for Octa-core CPU, VGPU, VMODEM, VDRAM / LPDDR2 & LPDDR3, VSYS)

* High-PSRR Low-Dropout Linear Regulators (LDOs dedicated to eMMC storage, Cameras, Sensors, SIM cards, Wi-Fi/BT)

* Integrated Switching Battery Charger Circuit (handles USB VBUS input, charging current control, and battery temperature sensing)

* Integrated Audio Subsystem (Stereo DAC/ADC, Headphone Amplifier, Loudspeaker Driver, Analog Mic Interface)

* Hardware Power Sequencing Controller & 32.768 kHz RTC Crystal Driver

- Package Type: VFBGA-145 (145-ball Fine-Pitch Ball Grid Array)

- Stencil Compatibility: Amaoe MT2 (MTK Power Series BGA Stencil for MT6322 / MT6325 / MT6356) (0.12mm)

- Recommended Solder Paste: 183°C Leaded Solder Paste

Usage:

- Primary Power Management: Converts single-cell Li-ion battery voltage and 5V USB charger input into regulated high-current power rails required for multi-core CPUs, baseband, and memory.

- Target Devices & Compatible Models:

* Huawei / Honor: Honor 3X (G750-U10 / G750-T00), Honor 3X Pro, Huawei Ascend G750

* Xiaomi / Redmi: Redmi Note 3G (First Generation Redmi Note MTK MT6592 variant)

* Infinix: Infinix Zero (X506)

* HTC: HTC Desire 616 (D616W), HTC Desire 620G (D620G MTK)

* Gionee: Gionee Elife E7 Mini, Gionee Elife S5.5 (GN9000)

* QMobile / Micromax: QMobile Noir Z6, Noir Quatro Z5, Micromax Canvas Knight (A350)

* Lenovo: Lenovo Golden Warrior S8 (S898t+), Lenovo Vibe X (MTK editions)

- Common Fault Symptoms & Motherboard Diagnostics:

* Completely Dead Phone (0.00A or Static 0.01A–0.03A Hang):

- Phone does not respond to power button. DC bench supply registers 0.00A (open PWRKEY or blown 32.768 kHz RTC clock) or freezes at 0.02A (shorted secondary LDO rail).

* Dead After Charger Surge / Fake Charging:

- High-voltage surges from unbranded chargers damage the internal switching charger stage of MT6322GA, shorting VBUS directly to ground or causing the battery percentage to freeze/drain under charge.

* Auto MediaTek USB Port (BROM Mode):

- Device screen stays off, but connecting via USB to PC immediately enumerates as "MediaTek USB Port (COMxx)" because the CPU starts in ROM recovery mode while memory (eMMC/RAM) power rails are absent or fluctuating.

* Standby Heating & Rapid Battery Drain:

- MT6322GA runs warm immediately upon inserting the battery due to high-side MOSFET breakdown on VCORE or VIO rails.

* Audio Subsystem Failure:

- Permanent loss of loudspeaker, earpiece, or microphone audio that persists after speaker replacement, caused by damage to the integrated analog audio codec block.