The TPS53603ADRGR is a high-efficiency step-down integrated fl ight controller (IFC) from Texas Instruments (TI). It is part of the THS53000 series of IFCs, and is a synchronous, monolithic, non-isolated power supply controller and protected high-voltage buck regulator that achieves high efficiency over a very wide load range. It utilizes TI's proprietary Control Operating Point Technology, enabling the controller to reach efficiencies up to 98%, over a wide range of loads. It features a 4.85V to 18V wide input voltage range, a 0.8V to 5V adjustable output voltage range and a 2A output current with low output ripple. Protection features include Thermal shutdown, input undervoltage lockout (UVLO), output open load protection (OLP) and an adjustable line undervoltage protection (LUV).