无感升压芯片 开关频率360KHZ
Featturres Fixed 4.9V ± 2% 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 <1A No Inductors Available in Low Profile 6-Lead SOT23 Package Applliicattiions White LED Backlighting Li-Ion Battery Backup Supplies Smart Card Readers Descrriipttiion n 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. PCMCIA Local 5V Supplies
