RT9081D

® RT9081D 500mA, 5.5V, Ultra Low Dropout Linear Regulator General Description The RT9081D is a high performance positive voltage regulator with separated bias voltage (VBIAS), and is designed for applications requiring low input voltage and ultra low dropout voltage. The output current is up to 500mA. The feature of ultra low dropout voltage is ideal for applications where output voltage is very close to input voltage. The input voltage can be as low as 0.8V and the output voltage is adjustable by an external resistive divider. The RT9081D features very low quiescent current consumption for portable applications. The device is available in the ZADFN-6L 1.2x1.2 package. Pin Configuration (TOP VIEW) VOUT 1 ADJ/IC 2 EN 3 GND 6 VIN 5 GND 7 4 BIAS ZADFN-6L 1.2x1.2 Features  Input Voltage Range : 0.8V to 5.5V  Bias Voltage Range : 2.4V to 5.5V  Output Voltage Fixed and Adjustable Versions  0.9V to 1.8V (Fixed)  0.8V to 3.6V (Adjustable)  Accurate Output Voltage Accuracy (1.5%) Over Line, Load @ 25°C  Ultra Low Dropout Voltage : 140mV at 500mA  Low Bias Input Current  80μA in Operating Mode  0.5μA in Shutdown Mode  Enable Control  Output Active Discharge Function  RoHS Compliant and Halogen Free Applications  Battery Powered Systems  Portable Electronic Device  Digital Set Top Boxes Simplified Application Circuit VIN Enable VBIAS RT9081D VIN VOUT CIN CBIAS EN IC BIAS GND COUT VIN Enable VBIAS RT9081D VIN VOUT CIN EN ADJ BIAS CBIAS GND V...