ADP123AUJZ-R7

The ADP123 series low quiescent current CMOS low-dropout Linear Regulator designed to operate from an input voltage between 2.3 and 5.5V and to provide up to 300mA of output current. The low 85mV dropout voltage at a 300mA load improves efficiency and allows operation over a wide input voltage range. The low 170µA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 and 5V by an external voltage divider. It is specifically designed for stable operation with tiny 1µF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications. It has an internal soft-start that gives a constant start-up time of 350µs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions.