The UIC811G is a highly integrated power management IC manufactured by UTC (Unisonic Technologies Co., Ltd.). Designed for a wide range of portable and battery-powered applications, the UIC811G combines multiple functions into a single chip, including voltage regulation, battery charging, and system monitoring. This integration minimizes the external component count, reduces board space, and simplifies the overall system design.

Applications

• Smartphones and tablets
• Portable media players
• GPS devices
• Digital cameras
• Wearable devices (smartwatches, fitness trackers)

Features

• Integrated buck-boost converter for efficient power conversion
• LDO regulator for stable output voltage
• Battery charger with programmable charging current and voltage
• Overvoltage and overcurrent protection
• Thermal shutdown protection
• Low quiescent current for extended battery life

Benefits

• Extended battery life due to high efficiency and low quiescent current
• Reduced board space and component count
• Simplified system design and manufacturing
• Improved system reliability and safety with comprehensive protection features
• Cost-effective solution for power management

The UIC811G features a buck-boost converter that can efficiently regulate the output voltage even when the input voltage (battery voltage) is higher or lower than the desired output voltage. This ensures stable operation throughout the entire battery discharge cycle. The integrated LDO (low dropout) regulator provides a clean and stable voltage supply for sensitive analog and digital circuits. The battery charger supports various battery chemistries (e.g., Li-ion, Li-Polymer) and allows for programmable charging parameters, enabling optimized charging performance and extended battery lifespan. Furthermore, the UIC811G incorporates comprehensive protection features, including overvoltage, overcurrent, and thermal shutdown, to protect the device and the connected battery from damage. Its small package size makes it ideal for use in space-constrained portable devices.