Features: Operates at Supply Voltages From 2.0 V to 30 VConsumes Only 110 mA Supply CurrentStep-Up or Step-Down Mode OperationMinimum External Components RequiredLow Battery Detector Comparator On-ChipUser-Adjustable Current LimitInternal 1 A Power SwitchFixed or Adjustable Output Voltage Versions...
ADP1108: Features: Operates at Supply Voltages From 2.0 V to 30 VConsumes Only 110 mA Supply CurrentStep-Up or Step-Down Mode OperationMinimum External Components RequiredLow Battery Detector Comparator On-C...
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The ADP1108 is a highly versatile micropower switch-mode dc-dc converter that operates from an input voltage supply as low as 2.0 V and typically starts up from 1.8 V. The ADP1108 can be programmed into a step-up or step-down dc-to-dc converter with only three external components. The fixed outputs are 3.3 V, 5 V and 12 V. An adjustable version is also available. In step-up mode, supply voltage range is 2.0 V to 12 V, and 30 V in step-down mode. The ADP1108 can deliver 150 mA at 5 V from a 2 AA cell input and 300 mA at 5 V from a 9 V input in step-down mode. Switch current limit can be programmed with a single resistor.
For battery operated and power conscious applications, the ADP1108 offers a very low power consumption of less than 110 µA. The auxiliary gain block available in ADP1108 can be used as a low battery detector, linear post regulator, under voltage lockout circuit or error amplifier.