8Q Original Mobile Phone IC
High-Quality Mobile IC for Optimal Performance
The 8Q Original Mobile Phone IC is designed to deliver unparalleled reliability and efficiency, making it an essential component for your mobile device. Crafted with precision, this IC guarantees seamless functionality, ensuring your phone operates just as it should. 8Q Original Mobile Phone IC
Enhanced Compatibility and Durability
Engineered for a wide range of devices, the 8Q Original Mobile Phone IC is a versatile solution for various mobile models. Its robust construction ensures long-lasting performance, protecting your investment and offering peace of mind. 8Q Original Mobile Phone IC
Why Choose the 8Q Original Mobile Phone IC?
Whether you’re repairing your device or upgrading its components, the 8Q Original Mobile Phone IC promises exceptional quality. Easy to install, it optimizes your phone’s efficiency while maintaining system stability. Choose this IC for a reliable, cost-effective solution. 8Q Original Mobile Phone IC
In the technical world of mobile phone repair and manufacturing, the “8Q” marking refers to a specific Charging Management IC, most commonly recognized as a high-quality aftermarket or original replacement part for MediaTek-based smartphones, particularly the Oppo A15 and certain Xiaomi models. 8Q Original Mobile Phone IC
Because “8Q” is often a surface marking (top-code) rather than a full corporate part number, it is frequently cross-referenced with the BQ25601 or similar MTK Power Management lineages. Below is a comprehensive specification of this component.
1. General Device Identification
The “8Q” IC is a highly integrated switch-mode battery charge management and system power path management device. It is designed to handle high-input voltages and provide efficient charging for single-cell Li-Ion and Li-polymer batteries.
| Feature | Specification |
| Common Surface Marking | 8Q (e.g., 8Q=7K, 8Q=6L) |
| Function | Battery Charging IC / Power Path Management |
| Common Device Links | Oppo A15, Xiaomi Redmi 9, Vivo Y-Series |
| Associated SoC | MediaTek Helio P35 (MT6765) / G-Series |
| Package Type | WQFN-24 (4.00 mm x 4.00 mm) |
| Control Interface | $I^2C$ Serial Interface |
2. Absolute Maximum Ratings
These ratings represent the physical limits of the silicon. Exceeding these values can cause immediate failure of the IC.
| Parameter | Symbol | Min | Max | Unit |
| Input Voltage (VBUS) | $V_{VBUS}$ | -2.0 | 22.0 | V |
| Battery Voltage (BAT) | $V_{BAT}$ | -0.3 | 6.0 | V |
| System Voltage (SYS) | $V_{SYS}$ | -0.3 | 6.0 | V |
| Input Current (VBUS) | $I_{IN}$ | — | 3.25 | A |
| Charging Current (BAT) | $I_{CHG}$ | — | 3.0 | A |
| Operating Junction Temp | $T_J$ | -40 | +125 | °C |
3. Electrical Characteristics & Performance
The 8Q IC is prized for its high efficiency, which is critical for maintaining low thermals during rapid charging in modern slim smartphones.
| Parameter | Conditions / Details | Typical Value |
| Input Operating Range | Valid VBUS range | 3.9V to 13.5V |
| Output Regulation | Accuracy for Li-Ion | ±0.5% |
| Charge Efficiency | 2A Charge at 5V Input | ~92% |
| OVP (Over-Voltage) | Protection threshold | 6.5V / 10.5V / 14V |
| Quiescent Current | Battery only (Ship Mode) | <10 $\mu A$ |
| Switching Frequency | PWM Converter frequency | 1.5 MHz |
4. Pin Configuration and Internal Logic
The 8Q IC uses a 24-pin leadless package to maximize thermal dissipation through the PCB’s ground plane.
| Pin Number | Name | Description |
| 1, 24 | VBUS | Charger Input Supply |
| 2, 3 | SW | Switching Node (Connects to Inductor) |
| 13, 14 | SYS | System Power Supply Output |
| 15, 16 | BAT | Battery Connection |
| 8 | SDA | $I^2C$ Data Line |
| 9 | SCL | $I^2C$ Clock Line |
| 11 | INT | Interrupt Output to CPU |
| 20 | PSEL | Power Source Selection (USB vs. Adapter) |
5. Functional Features
-
Dynamic Power Path Management (DPPM): This allows the IC to power the system (the phone’s CPU and Screen) while simultaneously charging the battery. If the adapter is weak, the IC prioritizes the system and reduces charging current.
-
USB On-The-Go (OTG) Support: The 8Q IC can reverse the power flow, taking energy from the battery to provide a regulated 5V output to the USB port for powering peripherals like keyboards or flash drives.
-
Thermal Regulation: If the IC detects the phone is getting too hot, it automatically throttles the charging current to prevent damage, a feature vital for high-wattage charging.
-
Integrated ADC: Includes an internal Analog-to-Digital Converter to monitor VBUS voltage, battery voltage, and charge current, reporting this data to the phone’s OS via $I^2C$.
6. Repair & Troubleshooting Guide
Technician Note: The “8Q” IC is a common failure point in phones that show “Plugged in, not charging” or are completely dead (No Power) after using a faulty car charger or cheap USB cable.
Common Failure Symptoms
-
Fake Charging: The lightning bolt icon appears, but the battery percentage never increases or actually decreases.
-
Thermal Warnings: The phone displays a message saying “Charging paused: Battery temperature too high” even when cool.
-
Dead Short: The phone draws 0.00A on a USB ammeter, or the VBUS line is shorted to ground.
Installation Requirements
-
Temperature: Recommended hot air rework at 330°C to 350°C.
-
Solder: Requires Lead-Free or Leaded solder paste (Sn63/Pb37 for easier DIY repair).
-
Alignment: Pin 1 is indicated by a small dot/notch on the top-left corner of the IC.
More Products : https://gaffarmarketdelhi.com
