The HX4004A 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 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
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
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