M54128L Datasheet PDF

MITSUBISHI M54128L/FP EARTH LEAKAGE CURRENT DETECTOR DESCRIPTION The M54128 is a semiconductor in...

MITSUBISHI M54128L/FP EARTH LEAKAGE CURRENT DETECTOR DESCRIPTION The M54128 is a semiconductor integrated circuit designed for high-speed type earth leakage breakers. This lC includes leakage and abnormal voltage detecting functions. PIN CONFIGURATION (TOP VIEW) GND 1 14 VS 13 VCC FEATURES q lmprovement of ability against unwanted tripping due to Iightning -surge. Adopt the two times counting system. lmprovement of ability against needless action due to lightningimpulse. q lt is a possible that cope with lEC owing to mode change. Adopt the 1.5 times counting system. q High input impedance : Filter circuit can be formed with externally attached C/R. lmprovement of ability against needless action due to high frequency and high harmonics. q High input sensitivity : VT = 6.5mVrms q Abnormal voltage detecting (neutral conductor open-phase protection) function : Neutral conductor open-phase protection at single-phase threewire system ln case of no use this function, stop this function and reduction of circuit current, possible. q Low voltage operation : 7 to12V (conventional Mitsubishi lCs : 12 to 20V) q Low current dissipation : In stand-by condition : 820µA typical (Vs = 9V, Ta = 25°C) When SCR is ON : 740µA typical (Vs = 9V, Ta = 25°C) q Highly stable design : Employment of circuits of which characteristics fluctuations resulting from changes in supply voltage/ambient temperature are small. IREF 2 M54128FP VREF 3 ILKI 4 TRC1 5 TRC2...