Description

The PS3120A 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

PS3120A ideally suited for small,

battery-powered applications.

The PS3120A 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 PS3120A is available in the industry

standard SOT-23-6L power packages.

Features

? Fixed 4.94V±3 Output

? VIN Range: 2.7V to 4.5V

? Output Current: Up to 110mA (VIN≥3V)

Up to 230mA (VIN≥3.6V)

? Low Noise Constant Frequency (360kHz)

Operation

? Shutdown Current <1μA

? No Inductors

? Available in Low Profile 6-Lead SOT23

Package

Applications

? White LED Backlighting

? Li-Ion Battery Backup Supplies

? Smart Card Readers

? PCMCIA Local 5V Supplies