Analog Devices MAX1556/MAX1556A/MAX1557 Fixed-Frequency Step-Down DC-DC Converters feature high efficiency, low-quiescent operating current (16µA), low dropout, and minimal (27µA) quiescent current in dropout, making these converters ideal for powering portable devices from 1-cell Li-ion or 3-cell alkaline/NiMH batteries. MAX1556 / MAX1556A Step-Down DC-DC Converters deliver up to 1.2A, have pin-selectable 1.8V, 2.5V, and 3.3V outputs, and are adjustable. The Analog Devices MAX1557 delivers up to 600mA, has pin-selectable 1V, 1.3V, and 1.5V outputs, and is adjustable.
