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

Description
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.