The MAX679's switching frequency is pin selectable at 330kHz or 1MHz to allow trade-offs between lowest supply current and smallest-size capacitors. The logic shutdown function reduces the supply current to 5A (max) and disconnects the load from the input. Special soft-start circuitry prevents excessive current from being drawn from the battery during start-up. This DCDC converter requires no inductors and has low EMI. It is available in the ultra-small MAX package, which is only 1.11mm high and half the area of an 8-pin SO.