SGM6600

SGM6600 90% Efficient Synchronous Step-Up Converter with 1.2A Switch GENERAL DESCRIPTION The SGM6600 is a 1.2MHz, constant frequency, current mode, synchronous, step-up switching regulator. Its output current can go as high as 75mA while using a single-cell alkaline, and discharge it down to 0.9V. It can also be used for generating 5V at 500mA from a 3.3V rail or a Li-ion battery. High switching frequency minimizes the sizes of inductor and capacitor. Integrated power MOSFETs and internal compensation make the SGM6600 simple to use and fit the total solution in a compact space. For light load current, the SGM6600 enters into the power saving mode to maintain high efficiency. Antiringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The SGM6600 provides true output disconnect and this allows VOUT to go to zero volts during shutdown without drawing any current from the input source. The output voltage of SGM6600-ADJ can be programmed by an externa...