The Texas Instruments TPS54334DDAR is a 5 A, 40 V synchronous buck switching regulator. This regulator is designed to deliver high efficiency, low noise and fast transient response for powering small loads from medium and large power supplies. The TPS54334DDAR is a single-phase, non-synchronous buck switching regulator featuring a 200 kHz fixed switching frequency and a low quiescent current of only 70 μA over a wide range of input and output voltages. This switching regulator features a wide input voltage range of 4.5 to 40 V, a small footprint of 1.6 mm x 3 mm, and a variety of output adjustability options. TPS54334DDAR is capable of driving currents up to 5 A and provides excellent output accuracy of ±2 % over line and load variations. Its fast transient response, low power consumption and high switching frequency make it ideal for a variety of applications such as telecom, automotive, LED Backlighting and Avionics/Aerospace.