PM 660-002 Original Mobile Phone IC

Enhance Your Mobile Device Performance

The PM 660-002 Original Mobile Phone IC is a premium solution designed to optimize the functionality and efficiency of your mobile device. Known for its reliability and precision engineering, this IC is ideal for replacing worn or faulty components, ensuring your device performs at its best. PM 660-002 Original Mobile Phone IC

High-Quality and Durable Design

Crafted with exact industry standards, the PM 660-002 IC delivers exceptional performance without compromising on durability. Whether it’s for personal repair or professional use, trust this component to meet your mobile device’s technical demands consistently. PM 660-002 Original Mobile Phone IC

Perfect Fit for Seamless Integration

Designed for compatibility, the PM 660-002 ensures seamless integration with your device, simplifying the replacement process. Its secure functionality guarantees enhanced longevity and resilience, making it an essential part for your mobile hardware repair needs. PM 660-002 Original Mobile Phone IC

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 Original Mobile Phone IC

Below is the detailed technical specification and functional breakdown of the PM660-002. PM 660-002 Original Mobile Phone IC

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 Original 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 Original 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

Buck Regulators (SMPS): These are high-efficiency switch-mode power supplies that step down battery voltage to the low levels required by the processor ( $V_{core}$ ).
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.
Battery Management: Includes the fuel gauge (monitoring percentage) and the charging interface ( $USB_{IN}$ to $V_{BATT}$ ).
GPIO & Control: Manages power-on sequences, reset signals ( $PON\_RESET\_N$ ), and communication with the application processor via the SPMI bus.

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).

Short Circuit: Often occurs on the $VPH\_PWR$ line. Testing capacitors around the IC with a multimeter in “Diode Mode” is the first step.
Overheating: If the IC becomes hot immediately upon connecting a battery, it indicates an internal short or a shorted output rail.
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.

PM660 (Primary): Manages CPU/GPU power, charging, and main system rails.
PM660L (Secondary): Specifically handles the Light (Display Backlight), LCD bias voltages, and Haptics (Vibrator).

PM 660-002 Original Mobile Phone IC