PM 660-002 Mobile Phone IC
Powering Modern Mobile Devices
The PM 660-002 Mobile Phone IC is an advanced integrated circuit engineered to elevate the performance of modern smartphones. Designed to handle complex mobile device functionalities, it ensures stable performance and seamless multitasking. PM 660-002 Mobile Phone IC
Unparalleled Efficiency and Durability
This cutting-edge microchip delivers highly efficient power management, reducing energy consumption while extending battery life. Built with premium materials and innovative technology, it provides exceptional durability and long-lasting reliability. PM 660-002 Mobile Phone IC
Made for Next-Gen Connectivity
The PM 660-002 is ideal for enhancing mobile connectivity and supporting next-generation applications with precision and speed. Compact and versatile, it integrates seamlessly into various phone models, meeting the evolving demands of smart device technology.
The PM660-002 is a sophisticated Power Management Integrated Circuit (PMIC) developed by Qualcomm. It is primarily paired with mid-to-high-tier Snapdragon chipsets (such as the Snapdragon 660 and 636) to manage the complex power requirements of modern smartphones. PM 660-002 Mobile Phone IC
Below is the detailed technical specification and functional breakdown of the PM660-002.
1. General Overview and Compatibility
The PM660-002 serves as the primary “heart” of the power distribution system. It handles battery charging, voltage regulation for the CPU and GPU, and provides the necessary power rails for the camera, display, and sensors. PM 660-002 Mobile Phone IC
Device Compatibility Table
| Brand | Supported Models |
| Xiaomi | Mi A2, Mi Max 3, Redmi Note 5 Pro, Redmi Note 6 Pro, Redmi Note 7 |
| Vivo | X20, X20 Plus, X21 |
| Oppo | R11, R11S, R15 |
| Others | Various devices utilizing the Qualcomm Snapdragon 660/636 platforms |
2. Technical Specifications
The PM660-002 is designed using a WLCSP (Wafer Level Chip Scale Package), which allows for a high density of pins in a very small footprint—essential for slim mobile devices. PM 660-002 Mobile Phone IC
Hardware Specifications
| Feature | Specification Details |
| Manufacturer | Qualcomm |
| Part Number | PM660-002 |
| Package Type | WLCSP-219 (219 pins/balls) |
| Process Node | High-efficiency Silicon process |
| Communication | SPMI (System Power Management Interface) |
| Operating Voltage | 3.6V to 4.4V (Typical Li-ion range) |
| Charging Support | Qualcomm Quick Charge 3.0 / 4.0 compatible |
| Function | Multi-channel Buck Converters & LDOs |
3. Functional Block Details
The IC is divided into several sub-modules that handle specific tasks. In a typical circuit, the PM660-002 works alongside a “companion” IC (often the PM660L) which manages secondary functions like the LED backlight and haptics.
Key Functional Areas
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Buck Regulators (SMPS): These are high-efficiency switch-mode power supplies that step down battery voltage to the low levels required by the processor ($V_{core}$). PM 660-002 Mobile Phone IC
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LDO Regulators: Low Dropout regulators provide “clean,” noise-free power to sensitive components like the RF (Radio Frequency) section and the Camera’s analog sensors. PM 660-002 Mobile Phone IC
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Battery Management: Includes the fuel gauge (monitoring percentage) and the charging interface ($USB_{IN}$ to $V_{BATT}$). PM 660-002 Mobile Phone IC
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GPIO & Control: Manages power-on sequences, reset signals ($PON\_RESET\_N$), and communication with the application processor via the SPMI bus. PM 660-002 Mobile Phone IC
4. Pinout and Signal Mapping
For technicians and engineers, the pinout is the most critical aspect for troubleshooting “dead” devices or “no power” issues.
Major Pin Categories
| Signal Group | Key Pins | Function |
| Power Input | $VPH\_PWR$, $VBATT\_PWR$ | Main system power and battery input. |
| Charging | $USB\_IN$, $VSW\_CHG$, $BOOT\_CAP$ | USB input and charging switch node. |
| System Interface | $SPMI\_DATA$, $SPMI\_CLK$ | Data bus for communicating with the CPU. |
| Regulators | $VREG\_S1$ to $S6$, $VREG\_L1$ to $L19$ | Output rails for various hardware modules. |
| Thermal/Sense | $BATT\_THERM$, $BATT\_ID$ | Monitoring battery temperature and authenticity. |
5. Typical Faults and Troubleshooting
When a PM660-002 fails, the phone usually enters a “Dead Boot” state (0.01A – 0.05A current draw on a DC Power Supply).
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Short Circuit: Often occurs on the $VPH\_PWR$ line. Testing capacitors around the IC with a multimeter in “Diode Mode” is the first step.
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Overheating: If the IC becomes hot immediately upon connecting a battery, it indicates an internal short or a shorted output rail.
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Boot Sequence Failure: If the $PS\_HOLD$ signal (Power Stay Hold) is not triggered by the CPU, the PMIC will shut down the power rails immediately after the power button is pressed.
Note: Replacing this IC requires professional BGA Reballing skills. The IC uses lead-free solder balls that require a temperature of approximately 340°C – 360°C for removal and installation.
6. Comparison: PM660 vs. PM660L
It is common to find both chips on the same motherboard.
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PM660 (Primary): Manages CPU/GPU power, charging, and main system rails.
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PM660L (Secondary): Specifically handles the Light (Display Backlight), LCD bias voltages, and Haptics (Vibrator).
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