The LT3973EMSE-3.3PBF part from Analog Devices is an integrated buck boost switching regulator in a 7-pin DFN package. It offers high efficiency, low noise and thermal feedback architecture, low external component count, input voltage up to 20 V, an adjustable output voltage as low as 0.9 V, programmable frequency up to 1.2 MHz, and power capability up to 6.5 A. This part is suited for applications that require step-up, step-down and inverting output applications. The package has an Enhanced Micro SMD (EMSE) lead style and is RoHS compliant.