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DESCRIPTION

The M54133 is a semiconductor integrated circuit designed for high-speed type earth leakage breakers. This IC has built-in antilightning-surge function and anti-inverter-noise function.

FEATURES

● Improvement of ability against unwanted tripping by lightning-surge.

? Adopt the two times counting system.

? Improvement of ability against needless action for lightning impulse.

● Improvement of ability against unwanted tripping by inverter-noise.

? Built-in operational amplifier (of low current dissipation) for active low-pass filter.

? Improvement of ability against needless action for high frequency and high harmonics.

● Built-in delay time function

? An external capacitor is used to set the delay time.

● High input sensitivity : VT=11.5mVrms Typ.

● Low-current dissipation (at RIREF=180k?)

? In stand-by condition : IS=610μA Typ.

● High stabilities design

? Adopt the circuits that is not affected by fluctuations of supply voltage/ambient temperature.

APPLICATION

Earth leakage breaker

RECOMMENDED OPERATING CONDITIONS

Supply voltage range............................................................7 to 12V

Operating ambient temperature.....................................-20 to +85°C