XC6601

The XC6601 series is a CMOS LDO voltage regulator with precise (􀊶20mV) outputs which enables the operation in ultra low On resistance even where low output voltages to achieve high efficiency of the output current. The series is suited for the application which requires low dropout voltage operation. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a fold back circuit, a thermal shutdown (TSD) circuit, a Under Voltage Lock Out (U.V.L.O.) and a phase compensation circuit.

The XC6601 output voltage is selectable in 50mV increments within the range of 0.7V to 1.8V using laser trimming technologies. The output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors.The over current protection circuit (the current limiter and the fold back circuit) and the thermal shutdown circuit (the TSD circuit) are built-in. These two protection circuits will operate when the output current reaches limit level or the junction temperature reaches temperature limit level.

With the built-in U.V.L.O. function, the XC6601 regulator output is forced OFF when the V_BIAS pin or the VIN pin becomes the U.V.L.O.voltage or lower.The CE function enables the output to be turned off and the series becomes a stand-by mode resulting in greatly reduced power consumption. At the time of entering the stand-by mode, the series enables the electric charge at the output capacitor (CL) to be discharged via the internal auto-discharge switch placed between the V_OUT pin and the V_SS pin, as a result the V_OUT pin quickly returns to the V_SS level.