Texas Instruments TPS40003 Low Input Voltage Mode Synchronous Buck Controller TPS40003DGQRG4

The TPS40003DGQ is a DC-DC switching controller designed for low-voltage, non-isolated synchronous buck regulation. It operates within an input voltage range of 2.25 V to 5.5 V and can output voltages as low as 0.7 V, with a 1% internal reference voltage. The controller features predictive gate drive technology, which enhances efficiency by minimizing diode losses during switching transitions. It supports externally adjustable soft-start and overcurrent limit functions, making it versatile for various applications. This device is packaged in a 10-lead MSOP PowerPad format, which aids in thermal performance. The TPS40003DGQ operates at a fixed frequency of 600 kHz, allowing for efficient power conversion. It includes features such as thermal shutdown and an internal bootstrap diode, ensuring reliable operation under varying conditions. The controller is suitable for applications in networking equipment, telecom equipment, base stations, servers, and DSP power modules.