SC 2723E Mobile Phone IC
Reliable Performance for Modern Devices
The SC 2723E Mobile Phone IC is engineered to deliver optimal efficiency and stability for a wide range of mobile devices. Designed for seamless integration, this IC ensures consistent, reliable performance in even the most demanding applications. SC 2723E Mobile Phone IC
Exceptional Efficiency and Compact Design
Featuring a compact design, the SC 2723E minimizes energy consumption while maximizing output. Its efficient power management capabilities make it an ideal choice for those seeking to optimize battery life without sacrificing performance. SC 2723E Mobile Phone IC
Versatile Applications for Diverse Needs
The SC 2723E Mobile Phone IC is not only versatile but also highly adaptable, catering to various mobile device configurations. Whether for smartphones, tablets, or other portable electronics, this IC provides a dependable solution for your device’s internal circuitry needs. SC 2723E Mobile Phone IC
The SC2723E is a high-performance Power Management Integrated Circuit (PMIC) developed by UNISOC (formerly Spreadtrum). It is a cornerstone component in the power architecture of numerous mid-range and entry-level smartphones, most notably within the Samsung Galaxy J and A series (e.g., J100H, G360H, A23).
This IC is a multi-functional chip that goes beyond simple voltage regulation; it integrates power conversion, battery management, and audio processing into a single silicon die to save PCB space and improve energy efficiency.
SC2723E Technical Specifications
| Feature | Specification Details |
| Manufacturer | UNISOC (Spreadtrum) |
| IC Type | Power Management Integrated Circuit (PMIC) |
| Compatibility | Samsung J100H, G360H, G355H, J210F, A23 |
| Package Type | BGA (Ball Grid Array) / SMD |
| Input Voltage Range | $3.4\text{V}$ to $4.5\text{V}$ (Typical Battery Range) |
| Output Rails | Multiple (DCDC Buck Converters & LDOs) |
| Operating Temperature | $-20°\text{C}$ to $+85°\text{C}$ |
| Integrated Blocks | Audio Codec, Charger, Fuel Gauge, RTC, LDOs |
| Interface | SPI / I2C for CPU Communication |
| Protection Features | Over-voltage (OVP), Thermal Shutdown, Short Circuit |
Core Functional Blocks
The SC2723E is designed to manage the complex power requirements of a modern mobile SoC (System on Chip). It typically consists of six major functional modules:
1. DC-DC Converters (Buck/Boost)
The IC contains high-efficiency step-down (Buck) converters that provide stable power to high-drain components like the CPU Core, GPU, and DDR Memory. These rails must react instantly to load changes (transients) to prevent system crashes. SC 2723E Mobile Phone IC
2. Low Dropout Regulators (LDOs)
While DC-DC converters are efficient, LDOs provide “cleaner” (low noise) power. The SC2723E utilizes multiple LDOs to power sensitive analog components such as the Camera Sensor, Wi-Fi/Bluetooth modules, SC 2723E Mobile Phone IC and SIM card slots.
3. Battery Management System (BMS)
This block includes:
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Charging Logic: Manages the constant-current/constant-voltage (CC/CV) charging cycle. SC 2723E Mobile Phone IC
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Fuel Gauge: Monitors the battery’s State of Charge (SoC) by measuring voltage and current flow, ensuring the percentage displayed to the user is accurate. SC 2723E Mobile Phone IC
4. Audio Codec
Uniquely, the SC27 series often integrates an audio codec. This handles the digital-to-analog conversion for the phone’s speakers and headphones, as well as analog-to-digital conversion for the microphones.
5. Real-Time Clock (RTC)
The IC maintains the system time even when the phone is powered off, provided there is a minimal battery connection. It typically operates on a dedicated low-power $32.768\text{kHz}$ crystal.
Common Failure Symptoms
Because the SC2723E is the “heart” of the phone’s power distribution, a failure usually results in a completely “dead” device. Common signs of a faulty SC2723E include:
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No Power: The device fails to turn on and shows $0\text{mA}$ current draw on a DC power supply.
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Short Circuit: The phone gets hot near the PMIC immediately after connecting the battery.
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Charging Issues: The phone detects the charger but the percentage does not increase, or it shows a “Temperature too low/high” error.
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Stuck at Logo: If the voltage rails for the CPU or Memory (VDD_CORE/VDD_MEM) are unstable, the phone may boot-loop.
Replacement and Repair
Replacing the SC2723E requires advanced micro-soldering skills. Since it is a BGA (Ball Grid Array) chip, it must be “reballed” or replaced using a hot air station. Technicians must be careful of the surrounding underfilled components to avoid “popcorning” (internal damage due to trapped moisture).
Note: The SC2723E is often interchangeable with variants like the SC2723S or SC2723M in certain Samsung models, but always verify the specific board revision and schematic before swapping.
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