High efficiency, low quiescent current buck-boost converter

The Texas Instruments TPS6307x is a high efficiency, low quiescent current buck-boost converter suitable for applications where the input voltage can be higher or lower than the output voltage. Output currents can go as high as 2A in boost mode and in buck mode. The buck-boost converter is based on a fixed frequency, PWM controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters power save mode to maintain high efficiency over a wide load current range. The converter can be disabled to minimise battery drain. During shutdown, the load is disconnected from the battery. The device is available in a 2.5mm × 3mm QFN package.