The HC3185A is a low noise switched capacitor voltage doubler. It produces a regulated output voltage from a 2.7V to 4.5V input. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the HC3185A ideally suited for small, battery-powered applications.
    The HC3185A have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1μA.
    The HC3185A is available in the industry standard SOT-23-6L power packages.

 Applications
•White LED Backlighting
•Li-Ion Battery Backup Supplies
•Smart Card Readers
•PCMCIA Local 5V Supplies