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Description

The HX4004A is a low noise switched capacitor voltage doubler. It produce 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 <1uA.
The HX4004A is available in the industry standard SOT-23-6L power packages.

Features

  Fixed 4.9V ± 2% Output
  VIN Range: 2.7V to 4.5V
      Output Current: Upto110mA （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

HX4004A.中文資料.pdf