PMI 8998 Original Mobile Phone IC
High-Quality PMI 8998 Mobile Phone IC
Ensure optimal device performance with the PMI 8998 Original Mobile Phone IC, specifically designed to meet the demands of modern smartphones. This high-quality integrated circuit is built for reliability and efficiency, making it an essential component for your mobile devices. PMI 8998 Original Mobile Phone IC
Exceptional Compatibility and Performance
The PMI 8998 IC is engineered to work seamlessly with a wide range of smartphone models, supporting their power management needs and maintaining stable system operations. Its original design delivers durability and ensures long-lasting functionality for tech enthusiasts and repair professionals alike.
Perfect Choice for Repairs and Upgrades
Whether you are repairing a damaged phone or enhancing the performance of an older device, the PMI 8998 IC offers a trustworthy solution. Designed for easy integration and consistent results, it is the ideal choice for both individual and professional use.
The Qualcomm PMI8998 is a sophisticated Power Management Integrated Circuit (PMIC) designed specifically to act as a “companion” chip to the Snapdragon 835 processor. In high-end mobile hardware, power management is split between a primary PMIC (usually the PM8998) and a secondary or companion PMIC like the PMI8998.
While the primary PMIC handles system-wide power rails, the PMI8998 specializes in Battery Management, USB Interface Control, and Quick Charge functionalities.
Technical Specifications Summary
| Feature | Specification Details |
| Manufacturer | Qualcomm |
| Part Number | PMI8998 (Commonly version 003) |
| Device Compatibility | Samsung Galaxy S8/S8+, OnePlus 5/5T, Google Pixel 2/2 XL, Sony Xperia XZ Premium |
| Package Type | WLNSP (Wafer Level Nano Scale Package) |
| Pin/Ball Count | 182-pin BGA (Ball Grid Array) |
| Interface | SPMI (System Power Management Interface) & I2C |
| Input Voltage ($V_{IN}$) | 3.0V to 5.5V (Standard Li-Ion Battery Range) |
| Charging Support | Qualcomm Quick Charge 4.0 / USB Power Delivery (PD) |
| Efficiency | Up to 95% peak efficiency on Buck converters |
| Operating Temp | $-40\text{°C}$ to $+125\text{°C}$ |
Functional Breakdown
The PMI8998 is more than just a voltage regulator; it serves several critical roles in a mobile device’s power architecture. PMI 8998 Original Mobile Phone IC
1. Battery & Charging Management
The PMI8998 is the “brain” behind the charging port. It manages the Qualcomm Quick Charge 4.0 protocol, allowing for high-speed charging while monitoring thermal limits. It integrates a switching charger (Buck-Boost) that can efficiently step down higher voltages from a wall adapter to the battery’s native voltage. PMI 8998 Original Mobile Phone IC
2. Output Voltage Rails
Unlike simple regulators, this IC provides multiple output rails to power specific subsystems. PMI 8998 Original Mobile Phone IC
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Buck Converters: High-efficiency rails for the Display driver, RF Front-end, and Camera modules. PMI 8998 Original Mobile Phone IC
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LDOs (Low-Dropout Regulators): Provides “clean” (low-noise) power for sensitive analog components like audio DACs and sensors. PMI 8998 Original Mobile Phone IC
3. Protection Mechanisms
To ensure the safety of the mobile device, the PMI8998 includes:
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OVP (Over-Voltage Protection): Guards against faulty chargers. PMI 8998 Original Mobile Phone IC
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OCP (Over-Current Protection): Prevents damage during a short circuit.
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OTP (Over-Temperature Protection): Throttles charging or shuts down the device if internal temperatures exceed safety thresholds.
Hardware Integration & Repair Notes
In a typical circuit layout, the PMI8998 is positioned near the battery connector or the USB Type-C port. Because it handles the high-current “charging path,” it is often the first component to fail if a user uses a low-quality charging cable or if there is a liquid spill near the charging port.
Common Failure Symptoms
When the PMI8998 fails, the phone may exhibit the following:
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No Power: The device stays completely dead and does not respond to a charger.
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Charging Loop: The phone shows a charging logo but never gains percentage.
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Fake Charging: The lightning bolt appears, but the battery actually drains.
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Heat: The area around the PMIC becomes excessively hot even when the phone is off.
Replacement Guide
Replacing this IC requires professional BGA Reballing equipment. Since it uses a WLNSP package, the solder balls are extremely small (0.4mm pitch).
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Removal: Requires a hot air station set to approximately 350°C – 380°C.
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Cleaning: The PCB pads must be cleaned of old solder using a copper wick.
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Installation: A new PMI8998 must be aligned perfectly and reflowed.
Warning: This chip is paired with the SoC via the SPMI bus. Replacing it with a different version (e.g., trying to use a PMI8994 in place of a PMI8998) will result in a “Hard Brick” as the voltage sequencing and register maps are incompatible.
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