AL 65 ORIGINAL Mobile Phone IC
Unmatched Quality and Performance
The AL 65 ORIGINAL Mobile Phone IC is designed to deliver exceptional reliability and performance for your mobile devices. Crafted with precision, it ensures seamless functionality, making it an excellent choice for repairs or upgrades. AL 65 ORIGINAL Mobile Phone IC
Advanced Design for Compatibility
This high-quality IC is compatible with a wide range of mobile phone models. Its robust design ensures durability and efficiency, providing long-term solutions for your electronic needs. AL 65 ORIGINAL Mobile Phone IC
Reliable and Easy to Use
Engineered for simplicity and reliability, the AL 65 ORIGINAL Mobile Phone IC is easy to install and integrates effortlessly into your device. Whether you’re a professional technician or a DIY enthusiast, it’s the perfect solution for restoring or enhancing your mobile phone’s performance. AL 65 ORIGINAL Mobile Phone IC
The AL 65 (often labeled as AL65 or AL-65) is a widely used Integrated Circuit (IC) in the mobile repair industry, specifically serving as a Backlight Driver IC (Light Control IC) for modern Android smartphones. It is a critical component responsible for converting the low-voltage battery power into the high-voltage signal required to illuminate the Light Emitting Diodes (LEDs) in a phone’s LCD panel. AL 65 ORIGINAL Mobile Phone IC
Below are the detailed specifications and technical parameters for the AL 65 Original IC.
AL 65 Original IC Specification Table
| Feature/Parameter | Details / Specifications |
| IC Name | AL 65 (AL65) |
| Primary Function | LCD Backlight Driver / Light Control IC |
| Common Application | Backlight section of mobile phone motherboards |
| Compatibility | Vivo (Y93, Y91), Oppo (A5s, A7, A11X, A92s), Huawei, Redmi |
| Package Type | 6-Pin / 6-Leg SOT (Small Outline Transistor) or WLCSP |
| Operating Voltage ($V_{IN}$) | $2.5V$ to $5.5V$ (Standard Li-ion Battery Range) |
| Boost Output Voltage ($V_{OUT}$) | Up to $25V$ – $40V$ (depending on display LED string) |
| Chip Dimensions | Approx. $2.0mm \times 2.0mm$ or $2.5mm \times 2.0mm$ |
| Feedback Voltage ($V_{FB}$) | Typically $200mV$ to $300mV$ (for current regulation) |
| Switching Frequency | $1.0 MHz$ to $1.2 MHz$ (Internal Oscillator) |
| Maximum Output Current | $20mA$ to $30mA$ (Typical for mobile LCD strings) |
| Protection Features | Over Voltage Protection (OVP), Thermal Shutdown, Soft Start |
Technical Overview & Pin Configuration
The AL 65 is an Asynchronous Boost Converter. It uses an internal MOSFET switch to build energy in an external inductor (coil), which is then discharged through a diode into the display backlight circuit. AL 65 ORIGINAL Mobile Phone IC
Typical 6-Pin Layout Description
While exact pinouts can vary slightly by manufacturer (OEM), the standard 6-pin “Light IC” configuration for the AL 65 is generally as follows:
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VIN (Input Power): Connected to the battery line (VPH_PWR or VBAT).
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GND (Ground): Common reference point for the circuit.
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EN (Enable/PWM): Receives the signal from the CPU to turn the light on/off and control brightness levels.
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FB (Feedback): Monitors the current flowing through the LEDs to maintain consistent brightness.
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SW (Switch): Connected to the inductor and boost diode to generate high voltage.
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OVP (Over Voltage Protection): Monitors the output to prevent the chip from burning out if the display is disconnected while powered.
Functional Characteristics
1. High-Efficiency Voltage Boosting
Mobile displays require significantly more voltage than a standard phone battery ($3.7V$) can provide. The AL 65 IC is designed to “step up” this voltage. In a typical setup, it works alongside a 10uH or 2.2uH Inductor and a Schottky Diode to reach the $15V$–$35V$ needed for the backlight.
2. Dimming Control
The IC supports Pulse Width Modulation (PWM) or Analog dimming. This allows the user to adjust the screen brightness smoothly from $0\%$ to $100\%$. The CPU sends a high-frequency signal to the EN pin, which the IC interprets to adjust the output current. AL 65 ORIGINAL Mobile Phone IC
3. Safety Mechanisms
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Thermal Shutdown: If the IC overheats due to a short circuit in the display flex cable, it will automatically shut down to prevent permanent damage to the motherboard.
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Soft Start: Gradually increases the output voltage when the screen is turned on to prevent “inrush current” that could spike and damage other components.
Common Signs of a Faulty AL 65 IC
Repair technicians usually replace this IC when a phone exhibits the following symptoms:
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“Black Screen” with Graphics: The phone turns on, and you can see the image using a flashlight held against the screen, but the backlight does not work.
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Overheating: The area near the CPU/Power section gets extremely hot immediately after turning the display on.
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Flickering: The screen backlight flickers or stays at a very dim level despite being set to maximum.
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Water Damage: Because the backlight circuit carries high voltage, even a small amount of liquid can cause the AL 65 pins to corrode or short out.
Maintenance & Installation Tips
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Soldering Precision: Due to its tiny footprint ($2mm \times 2mm$), it is recommended to use a hot air station at approximately $330^{\circ}C$ to $350^{\circ}C$ with low airflow to avoid “blowing away” surrounding SMD components. AL 65 ORIGINAL Mobile Phone IC
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Component Matching: When replacing the AL 65, always check the Backlight Coil and Diode. Often, a failed IC is caused by a shorted diode or a “leaky” capacitor in the circuit. AL 65 ORIGINAL Mobile Phone IC
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Orientation: Pay close attention to the “dot” (Pin 1 marker) on the top of the IC. Reversing the orientation will likely cause a short circuit across the VPH_PWR line, potentially killing the phone’s Power Management IC (PMIC). AL 65 ORIGINAL Mobile Phone IC
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