PMI 632-902 Original Mobile Phone IC
Reliable Performance for Mobile Devices
The PMI 632-902 Original Mobile Phone IC ensures seamless performance and efficiency for your device. Designed with precision, it supports your mobile phone’s critical functions, enabling reliable and smooth operation. PMI 632-902 Original Mobile Phone IC
Premium Quality and Durability
Manufactured with high-grade materials, the PMI 632-902 IC guarantees long-lasting durability. It is an original part, developed to meet the highest industry standards, making it the perfect choice for repairs or replacements.
Compatibility and Easy Installation
This mobile phone IC is compatible with a wide range of devices, ensuring broad usability. Its design also simplifies installation, allowing it to integrate seamlessly into your mobile phone setup.
The PMI632-902 is a specialized Power Management Integrated Circuit (PMIC) designed by Qualcomm.1 It serves as a secondary or “companion” PMIC, typically paired with a primary power management chip in mid-range and budget smartphones.2 Its primary role is to handle high-current tasks like fast charging, LED driving, and display power regulation.
Below are the detailed specifications and technical features of the PMI632-902 original mobile phone IC.
1. Technical Specifications Table
| Feature | Details / Specification |
| Manufacturer | Qualcomm |
| Model Number | PMI632-902 (Revision 00) |
| Type | Power Management IC (PMIC) / Charging IC |
| Package Type | BGA (Ball Grid Array) |
| Pin Count | 80 Pins |
| Input Voltage Range | $3.6\text{V}$ to $5.5\text{V}$ (Standard USB/Battery range) |
| Supply Voltage Range | $1.0\text{V}$ to $6.0\text{V}$ |
| Operating Temperature | $0^\circ\text{C}$ to $310^\circ\text{C}$ (Max Junction/Soldering) |
| Dissipation Power | $0.6\text{W}$ |
| Compatibility | Snapdragon 439, 450, 632, 665, 855 Series |
| Primary Functions | Battery Charging, Display Power, LED/Flash Control |
2. Key Functional Blocks
The PMI632-902 is much more than a simple battery charger. It integrates several subsystems to save PCB space:
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Switching Battery Charger: Supports high-efficiency buck charging, often including Qualcomm Quick Charge capabilities. It manages the path between the USB input, the battery, and the system power ($V_{PH\_PWR}$). PMI 632-902 Original Mobile Phone IC
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Boost Converter for Display: Specifically designed to provide the higher voltages required for LCD bias or AMOLED power rails. PMI 632-902 Original Mobile Phone IC
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LED & Flash Driver: Controls the notification LEDs and the high-current camera flash. PMI 632-902 Original Mobile Phone IC
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Fuel Gauge: Provides accurate battery state-of-charge (SoC) reporting to the operating system. PMI 632-902 Original Mobile Phone IC
3. Pinout Configuration Categories
The 80-pin BGA layout is organized into functional groups. While a full pin-by-pin map is proprietary, the pins are categorized as follows:
| Group | Function | Common Labels |
| Power Input | USB and Battery input lines | $V_{BUS}$, $V_{BATT}$ |
| System Power | Main system voltage output | $V_{PH\_PWR}$ |
| Charging | Charging control and thermal monitoring | $CHG\_OK$, $BATT\_THERM$ |
| Interface | Communication with the main CPU | $SPMI\_CLK$, $SPMI\_DATA$, $I2C$ |
| Display | LCD/Display power supplies | $V_{DISP}$, $V_{SP}$, $V_{SN}$ |
| Lighting | LED and Camera Flash control | $LED1$, $FLASH1$, $RGB$ |
4. Device Compatibility
The “902” revision of the PMI632 is widely used in popular Android devices, particularly from Xiaomi and Vivo.3 Using the wrong revision (e.g., swapping a 501 with a 902) can lead to “Charging Paused” errors or display failure. PMI 632-902 Original Mobile Phone IC
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Xiaomi/Redmi: Redmi 7, Redmi 8, Redmi 8A, Redmi Note 8, Redmi Note 8T.4
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Vivo: Various Y-series models (e.g., Y11, Y12, Y15).
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Samsung: Galaxy A20s.5
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Motorola: Moto G series models using Snapdragon 632.
5. Maintenance & Installation Notes
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Soldering: Being a BGA chip, it requires a hot air rework station set to approximately $330^\circ\text{C}$–$350^\circ\text{C}$ for removal.
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Directional Notch: The IC has a specific orientation (indicated by a dot on the corner). Incorrect placement will short the $V_{BATT}$ line.
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Stencil: For reballing, a “PMI632” specific or universal Qualcomm PMIC stencil is required. PMI 632-902 Original Mobile Phone IC
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