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

 

Description

The HX4004A is a low noise switched ca-pacitor 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 HX4004A ideally suited for small, battery-powered applications.

The HX4004A 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 HX4004A 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

Typical Application

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