LUH ORIGINAL Mobile Phone IC
Enhance Your Device’s Functionality
The LUH ORIGINAL Mobile Phone IC is engineered to provide optimal performance and reliability for your device. This high-quality integrated circuit is the perfect solution for seamless operation and enhanced device functionality.
Precision and Durability
Crafted with precision and durability in mind, the LUH ORIGINAL Mobile Phone IC ensures consistent performance even in demanding conditions. Its robust design makes it suitable for various mobile phone models, giving you peace of mind about compatibility and long-lasting usage.
Effortless Integration
Designed for effortless integration, the LUH ORIGINAL Mobile Phone IC simplifies the repair and maintenance process of your mobile device. Whether you are a technician or simply resolving an issue, this IC is your go-to product for reliable results.
The LUH (often marketed as LUH 63QS) is a specialized Integrated Circuit (IC) primarily used as an LCD Backlight Driver and Display Power Supply in mid-range smartphones. It is part of a common family of 15-pin driver chips (including LUB, LUM, and LUBo) known for their stability in handling display brightness and power regulation for LCD panels.
Below are the detailed specifications and technical parameters for the LUH Original Mobile Phone IC.
LUH Original IC Specifications Table
| Feature / Parameter | Technical Details |
| IC Model Number | LUH (Part of 63QS / BG15 Series) |
| Primary Function | LCD Backlight Driver / Display Power IC |
| Pin Configuration | 15-Pin BGA (Ball Grid Array) |
| Operating Voltage | $1.5\text{V}$ to $5.5\text{V}$ DC |
| Max Power Dissipation | Approximately $0.5\text{W}$ |
| Operating Temperature | $0^\circ\text{C}$ to $105^\circ\text{C}$ |
| Interface Support | Compatible with 4-bit and 8-bit MCU communication |
| Marking Code | LUH |
| Package Type | SMD / WLCSP (Wafer Level Chip Scale Package) |
| Material Build | High-grade silicon with high-conductivity solder balls |
| Key Protections | Thermal Shutdown, Over-Voltage Protection (OVP) |
Key Features and Functional Overview
1. Versatile Device Compatibility
The LUH IC is widely used in popular mid-range smartphones from manufacturers like Huawei, Xiaomi (Redmi), and OPPO. It is frequently found in:
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Huawei: 9A and Y series.
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Redmi: Note 5, Note 5A, and Note 7.
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OPPO: A8, A9, and A58 series.
2. Stable Light Control
Its primary role is to drive the backlight LEDs of the LCD assembly. It ensures consistent brightness levels without flickering, even when the battery voltage fluctuates. This is achieved through precise Voltage Regulation and high-speed data transmission between the main processor and the LCD panel. LUH ORIGINAL Mobile Phone IC
3. Thermal Resilience
Because display drivers can generate significant heat during long periods of screen-on time, the LUH is designed to operate reliably at temperatures up to 105°C. This makes it particularly effective in “tropical” climates or devices prone to internal heat buildup. LUH ORIGINAL Mobile Phone IC
4. Diagnostic Use Cases
In the mobile repair industry, the LUH IC is the first component technicians check when a phone:
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Powers on but has a black screen (dead backlight). LUH ORIGINAL Mobile Phone IC
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Suffers from dim display issues that cannot be fixed via software settings.
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Has experienced water damage near the display connector, often leading to a short circuit in the driver IC.
Installation Guidelines for Technicians
Important Note: This is a BGA-style chip. It requires professional soldering equipment. LUH ORIGINAL Mobile Phone IC
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Handling: Small chips are sensitive to humidity. For best results, “bake” the chip at $100^\circ\text{C}$ for 24 hours if it has been exposed to air for an extended period. LUH ORIGINAL Mobile Phone IC
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Alignment: Look for the dot indicator or notch on the PCB to match the Pin 1 orientation of the LUH chip. LUH ORIGINAL Mobile Phone IC
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Temperature Profile: Use a hot air rework station set between $330^\circ\text{C}$ and $350^\circ\text{C}$ for desoldering/soldering, depending on the solder type (leaded vs. lead-free).
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