NCP4682, NCP4685 150 mA, Ultra Low Supply Current, Low Dropout Regulator The NCP4682 and NCP4685 are CMOS Low Dropout Linear voltage regulators with 150 mA output current capability. The devices NCP4682, NCP4685 VIN VIN VOUT VOUT Vref Vref Current Limit Current Limit CE CE GND GND NCP4682Dxxxx NCP4682Hxxxx VIN VOUT Vref Current Limit NC GND NCP4685Exxxx Figure 2. Simplified Schematic Block Diagram PIN FUNCTION DESCRIPTION Pin No. Pin No. Pin No. UDFN1010* SC 82AB SOT23 Pin Name Description 1 3 5 V Output pin OUT 2 2 2 GND Ground 3 1 3 CE/NC Chip enable pin (Active H) / No connection 4 4 1 V Input pin IN 4 NC No connection *Tab is GND level. (They are connected to the reverse side of this IC.) The tab is better to be connected to the GND, but leaving it open is also acceptable. ABSOLUTE MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage (Note 1) V 6.0 V IN Output Voltage V 0.3 to VIN + 0.3 V OUT Chip Enable Input V 6.0 V CE Output Current I 200 mA OUT