PM 660L-004-01 Mobile Phone IC
Advanced Power Management for Your Mobile Device
The PM 660L-004-01 Mobile Phone IC offers cutting-edge technology designed to optimize the performance and efficiency of your mobile devices. Built with reliability and precision, this integrated circuit ensures seamless energy distribution for enhanced device longevity and performance. PM 660L-004-01 Mobile Phone IC
Reliable and Durable Design
Engineered with robust materials and state-of-the-art manufacturing processes, the PM 660L-004-01 IC stands out for its durability and consistency. Perfectly suited for the demands of modern smartphones, it can withstand rigorous use while maintaining peak efficiency.
Ideal Solution for Today’s Tech-Driven World
Whether you’re a manufacturer or an electronics enthusiast, the PM 660L-004-01 Mobile Phone IC is a cornerstone for creating sustainable and efficient mobile devices. Its versatile application ensures it meets the needs of today’s high-performance gadgets.
The PM660L-004-01 is a high-performance Power Management Integrated Circuit (PMIC) developed by Qualcomm. It is specifically designed to work alongside the primary PM660 chip in mid-range and premium-tier smartphones powered by Qualcomm Snapdragon chipsets (such as the Snapdragon 660 and 636).
While the primary PM660 handles core system power, the PM660L variant (where “L” typically denotes a “companion” or “low” secondary role) focuses on auxiliary power domains like the display backlight, flash LED drivers, and secondary voltage rails.
PM660L-004-01 Technical Specifications
| Feature | Specification |
| Manufacturer | Qualcomm |
| Part Number | PM660L-004-01 |
| Type | Power Management IC (PMIC) / Companion IC |
| Package Type | BGA (Ball Grid Array) |
| Main Function | Voltage regulation, Battery charging, LED driving |
| Application | Mobile Phones (Redmi Note 7, Note 6 Pro, Vivo X20, etc.) |
| Input Voltage Range | 3.7V to 4.4V (Typical Li-ion Battery range) |
| Output Channels | Multiple LDOs and Buck Converters |
| LED Driver Support | Integrated Backlight and Flash LED drivers |
| Communication Interface | SPMI (System Power Management Interface) / I2C |
| Thermal Management | Integrated Thermal Shutdown and Over-current protection |
Key Functional Areas
1. Power Distribution
The PM660L-004-01 acts as a “Secondary PMIC.” It manages specific power rails that the main PMIC does not cover, ensuring that peripheral components like the camera sensors and touch controllers receive stable, noise-free DC voltage. PM 660L-004-01 Mobile Phone IC
2. Display & Backlight Control
One of the most critical roles of the PM660L series is managing the LCD/OLED backlight. It contains a specialized boost converter that elevates the low battery voltage to the high voltage required by the display’s LED array. It also manages PWM (Pulse Width Modulation) for brightness control. PM 660L-004-01 Mobile Phone IC
3. Battery Management & Charging
It often works in tandem with the primary chip to handle Quick Charge (QC) protocols. It monitors the thermal state of the charging circuit and regulates the current flow to prevent overheating during high-speed charging cycles. PM 660L-004-01 Mobile Phone IC
4. Safety and Protection
The IC includes built-in safeguards to prevent hardware failure, including:
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OVP (Over-Voltage Protection): Shuts down the rail if voltage spikes.
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OCP (Over-Current Protection): Limits current to prevent short-circuit damage.
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Thermal Throttling: Reduces performance or shuts down if the chip temperature exceeds safe limits (typically around 125°C to 150°C).
4. Safety and Protection
The IC includes built-in safeguards to prevent hardware failure, including:
-
OVP (Over-Voltage Protection): Shuts down the rail if voltage spikes.
-
OCP (Over-Current Protection): Limits current to prevent short-circuit damage.
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Thermal Throttling: Reduces performance or shuts down if the chip temperature exceeds safe limits (typically around 125°C to 150°C).
Common Failure Symptoms
When this IC fails, the phone may exhibit specific “dead” symptoms. Because it controls the display and charging, common signs of a faulty PM660L-004-01 include:
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Black Screen: The phone vibrates or makes sounds but shows no image (Backlight driver failure).
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Charging Errors: The phone shows a “temp too low/high” error or refuses to charge entirely.
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Short Circuit: The device consumes high current on a DC power supply without booting.
Usage in Popular Devices
The PM660L-004-01 is most famously found in the following models:
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Xiaomi: Redmi Note 7, Redmi Note 6 Pro, Mi 6X.
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Vivo: X20, X21.
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Oppo: R11 Plus.
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