MAX1557 Description
High efficiency, low-quiescent operating current, low dropout, and minimal (27µA) quiescent current in dropout make these converters ideal for powering portable devices from 1-cell Li-ion or 3-cell alkaline/NiMH batteries. The MAX1556 delivers up to 1.2A; has pin-selectable 1.8V, 2.5V, and 3.3V outputs;.
MAX1557 Key Features
- Up to 97% Efficiency
- 95% Efficiency at 1mA Load Current
- Low 16µA Quiescent Current
- 1MHz PWM Switching
- Tiny 3.3µH Inductor
- Selectable 3.3V, 2.5V, 1.8V, 1.5V, 1.3V, 1.0V, and Adjustable Output
- 1.2A Guaranteed Output Current (MAX1556)
- Voltage Positioning Optimizes Load-Transient Response
- Low 27µA Quiescent Current in Dropout
- Low 0.1µA Shutdown Current