ADP3605ARZ (ANALOG DEVICES)

The ADP3605ARZ is a switched-capacitor charge-pump Voltage Inverter with regulated output. It provides a regulated output voltage with minimum voltage loss and requires a minimum number of external components. In addition, the ADP3605 does not require the use of an inductor. Pin-for-pin and functionally compatible with the ADP3604, the internal oscillator of the ADP3605 runs at a 500kHz nominal frequency that produces an output switching frequency of 250kHz. This allows for the use of smaller charge-pump and filter capacitors. The ADP3605 provides an accuracy of ±3% with a typical shutdown current of 2µA. It can also operate from a single positive input voltage as low as 3V. The ADP3605 is adjustable via external resistors over a -3 to -6V range.