Switched Capacitor Voltage Converter w/Regulated Output - up to 50mA

The ADP3603 switched capacitor voltage converter provides a regulated output voltage with minimum voltage loss and requires a minimum number of external components. In addition, the ADP3603 does not require the use of an inductor. The ADP3603 provides up to 50 mA of output current with ±3% output accuracy.

The internal oscillator runs at 240 kHz nominal frequency which produces an output switching frequency of 120 kHz, allowing the use of small charge pump and filter capacitors. The ADP3603 is primarily designed for use as a high frequency negative voltage regulator/inverter. The output voltages of the ADP3603 can range from -1.2 V to -4.0 V, nominally -3.0 V. For other output voltages, contact the factory.

The ADP3603 dissipates less than 150 mW of power and tures fast shutdown mode capability (<5 ms) that also drops the quiescent current to 1.4 mA (typ). For a higher output current (120 mA) version, see the ADP3604.

* Fully Regulated Output * Output Voltage: –3.0 V (Regulated) * High Output Current: 50 mA 120 mA Version (ADP3604) Is Also Available * High Switching Frequency:

120 kHz (240 kHz Internal Oscillator)