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2022-09-24 23:32:00
MAX1680-125mA, Frequency Selectable, Switched Capacitor Voltage Converter
The MAX1680/MAX1681 inductorless switched-capacitor voltage converters either invert an input voltage of +2.0 V to +5.5 V or dual, while delivering up to 125mA of output current. They have a selectable frequency option that allows the use of small capacitors: 4.7µF (MAX1680), 1µF (MAX1681). With their high output current capability, these charge pump devices are suitable for replacement with inductor-based regulators that require more expensive external components and additional board space. The device's equivalent output resistance (typically 3.5 and a half) allows them to deliver as much as 125mA with only a 440mV drop. Shutdown function reduces quiescent current to less than 1µA. The MAX1680/MAX1681 are available in 8-pin SO packages. For devices delivering up to 50mA in the smaller µMAX package, see the MAX860/MAX861 data sheet.
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