XA2320B

XA2320B Low Noise, Regulated Charge Pump DC/DC Converter Features Fixed 3.3V ± 4% Output VIN Range: 1.8V to 5V Output Current: Up to 150mA Constant Frequency Operation at All Loads Low Noise Constant Frequency (1.2MHz) Operation Automatic Soft-Start Reduces Inrush Current Shutdown Current <1µA Short-Circuit Protection No Inductors Available in Low Profile 6-Lead SOT23 Package Application 2 AA Cell to 3.3V USB On-The-Go Devices White LED Drivers Handheld Devices Description The XA2320B is a low noise, constant frequency (1.2MHz) switched capacitor voltage doubler. It produce a regulated output voltage from a 1.8V to 5V input with up to 150mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the XA2320B ideally suited for small, battery-powered applications. A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The XA2320B have thermal shutdown ...