SC 2721G Original Mobile Phone IC
Exceptional Performance for Your Device
The SC 2721G Original Mobile Phone IC delivers outstanding performance to ensure your device operates seamlessly. Trusted by professionals, it provides efficiency and reliability for your hardware needs. SC 2721G Original Mobile Phone IC
Authentic and Durable Component
Designed with precision and using high-quality materials, this original IC guarantees longevity and stability. Whether for repair or building, it’s the perfect choice for enhancing mobile functionality. SC 2721G Original Mobile Phone IC
Perfect Fit for Versatile Applications
Engineered to meet diverse mobile phone compatibility requirements, the SC 2721G IC is suitable for a range of models. Simplify your tech solution with this game-changing component. SC 2721G Original Mobile Phone IC
The SC2721G is a high-performance, highly integrated Power Management Integrated Circuit (PMIC) developed by UNISOC (formerly Spreadtrum). It is specifically engineered to support entry-level and mid-range mobile platforms, most notably those using the SC7731S or SC9832E system-on-chips (SoCs).
As the “heart” of a phone’s power system, the SC2721G manages everything from battery charging to the precise voltage rails required by the CPU, memory, and camera modules.
Technical Specifications: SC2721G PMIC
| Feature | Specification Details |
| Manufacturer | UNISOC (Spreadtrum Communications) |
| Part Number | SC2721G / UMP510G |
| Package Type | BGA (Ball Grid Array) |
| Package Dimensions | Approx. 5.0mm x 5.0mm |
| Pitch Size | 0.4mm |
| Functions | DC/DC Conversion, LDO Regulation, Battery Charging, Audio Codec (partial) |
| Input Voltage Range | 3.2V to 4.5V (Standard Li-ion battery range) |
| Buck Regulators | Up to 6 independent rails (Core, Memory, GPU, etc.) |
| LDO Regulators | Multiple low-dropout regulators for analog/RF circuits |
| Charging Support | QC 2.0 / 3.0, BC1.2, and Type-C PD negotiation |
| Operating Temperature | $-40\text{°C}$ to $+85\text{°C}$ |
| Safety Features | Overcurrent (OCP), Overvoltage (OVP), Thermal Shutdown (OTP) |
Key Functional Modules
1. Advanced Power Regulation
The SC2721G employs a combination of Buck Converters and LDOs. Buck converters are used for high-current applications like the processor cores ($V_{DD\_CORE}$) because they are highly efficient. LDOs are utilized for sensitive analog components, such as the camera sensor and SIM card interfaces, where low noise is more critical than raw power efficiency.
2. Battery & Charging Management
This IC integrates a sophisticated charging controller. It supports modern standards like Quick Charge (QC) and can communicate with chargers to negotiate higher voltages. It also includes “Gas Gauge” functionality to monitor battery health and provide accurate percentage readings to the Android OS.
This IC integrates a sophisticated charging controller. It supports modern standards like Quick Charge (QC) and can communicate with chargers to negotiate higher voltages. It also includes “Gas Gauge” functionality to monitor battery health and provide accurate percentage readings to the Android OS.
3. System Control & Sequencing
Modern smartphones require a specific “power-up sequence.” For instance, the memory must often be powered before the CPU. The SC2721G contains a logic controller that manages these timings perfectly to prevent system hangs or hardware damage.
Common Applications & Compatibility
The SC2721G is widely found in budget-friendly smartphones and tablets. It is the go-to PMIC for the UNISOC chipset ecosystem. SC 2721G Original Mobile Phone IC
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Samsung Galaxy Series: J1 Ace (J111F), J2 Prime (G532), J3 Orbit. SC 2721G Original Mobile Phone IC
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Other Brands: Common in Alcatel, TCL, Doogee, and Itel devices. SC 2721G Original Mobile Phone IC
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Common Fault Symptoms: If this IC fails, the device typically becomes “dead” (no power), stuck in a boot loop, or shows a “vibrate only” response when plugged into a charger. SC 2721G Original Mobile Phone IC
Repair & Handling Notes
Note: Because the SC2721G uses a BGA (Ball Grid Array) format, it cannot be replaced using a standard soldering iron. SC 2721G Original Mobile Phone IC
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Tools Required: A hot air rework station, high-quality flux, and a 0.4mm pitch reballing stencil. SC 2721G Original Mobile Phone IC
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Thermal Profile: During desoldering, technicians usually target a peak temperature of roughly $245\text{°C}$ to $255\text{°C}$ to liquefy the lead-free solder balls without damaging the internal silicon die.
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