SGM 41512 Original Mobile Phone IC
High-Quality Original Mobile Phone IC
The SGM 41512 Original Mobile Phone IC is designed for optimal functionality and dependable performance in mobile devices. Whether you’re repairing a smartphone or building one, this IC ensures seamless integration and long-lasting reliability, making it an excellent choice for professional and hobbyist applications alike. SGM 41512 Original Mobile Phone IC
Efficient Performance and Versatility
Engineered to support fast processing and efficient power management, the SGM 41512 stands out in its class. It minimizes energy consumption while maximizing operational efficiency, ensuring smooth device performance. Its versatile design makes it compatible with a wide range of mobile phone models. SGM 41512 Original Mobile Phone IC
Durable and Trusted Solution
Crafted with premium materials, the SGM 41512 IC is not only built to last but also tested for quality assurance. Its robust construction and reliable performance make it a trusted component for any mobile device repair or assembly project. Choose the SGM 41512 for unparalleled performance and peace of mind. SGM 41512 Original Mobile Phone IC
The SGM41512 is a highly integrated 3A single-cell Li-ion battery charger and power path management IC. Manufactured by SG Micro (SGMICRO), it is a critical component in modern mobile phones (such as the Redmi Note 9A and Black Shark 4) because it handles the delicate balance between charging the battery and powering the phone’s system simultaneously.
Below are the full technical specifications organized for scannability and professional use. SGM 41512 Original Mobile Phone IC
📱 Technical Specification Overview
The SGM41512 is designed for high-efficiency charging, utilizing a synchronous buck converter architecture. It supports a wide input range, making it compatible with various USB standards and high-voltage adapters.
1. Electrical Characteristics
| Feature | Specification |
| Operating Input Voltage | 3.9V to 13.5V |
| Absolute Maximum Voltage | 20V (Sustainable up to 22V on some variants) |
| Maximum Charge Current | 3.0A (Programmable) |
| Maximum Discharge Current | 6.0A (Continuous) |
| Switching Frequency | 1.5 MHz |
| Charge Voltage Accuracy | $\pm 0.5\%$ |
| Charge Current Accuracy | $\pm 5\%$ at 1.5A |
| Efficiency (at 5V Input) | 93% at 1A / 91% at 2A |
2. Physical & Thermal Data
| Feature | Details |
| Package Type | TQFN-4×4-24L (Green Package) |
| Pin Count | 24 Pins |
| Thermal Regulation | Selectable thresholds at 80°C or 120°C |
| Operating Temp Range | -40°C to +85°C |
| Ship Mode Leakage | 10μA (Ultra-low battery drain) |
🛠️ Key Functional Features
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NVDC Power Path Management: This allows the device to power the system instantly even if the battery is completely empty or removed. It prioritizes system power and uses the battery to “supplement” the system if the input source is limited.
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USB On-The-Go (OTG) Support: The IC can work in reverse (Boost Mode), taking battery power and outputting a stable 5.15V at up to 1.2A to power external USB accessories.
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Automatic USB Detection: It identifies the input source type (USB BC1.2, SDP, CDP, DCP, and non-standard adapters) to set the correct input current limit automatically.
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I²C Interface: Provides flexible software control over charging parameters, status reporting, and safety settings.
⚠️ Safety & Protections
The SGM41512 includes a robust suite of hardware-level protections:
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JEITA Compliance: Monitors battery temperature via an NTC thermistor (TS pin) to adjust charging profiles based on heat. SGM 41512 Original Mobile Phone IC
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Input Protections: Under-Voltage Lockout (UVLO) and Over-Voltage Protection (OVP). SGM 41512 Original Mobile Phone IC
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Battery Protections: Over-current and short-circuit protection in both Charge and Boost modes. SGM 41512 Original Mobile Phone IC
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Safety Timers: Prevents indefinite charging if a battery fault is detected. SGM 41512 Original Mobile Phone IC
💡 Repair & Implementation Notes
In the mobile repair industry, the SGM41512 is often identified as the “Charging IC” or “USB IC.”
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Symptoms of Failure: Phone not charging, “Fake charging” (shows charging icon but percentage doesn’t rise), or the phone not turning on despite a charged battery. SGM 41512 Original Mobile Phone IC
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Replacement Tip: When soldering, ensure the exposed pad (center thermal paddle) is properly bonded to the PCB, as this is the primary heat dissipation path for the 3A current flow.
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