M54125P Datasheet - EARTH LEAKAGE CURRENT DETECTOR

MITSUBISHI M54125L/P EARTH LEAKAGE CURRENT DETECTOR DESCRIPTION The M54125 is a semiconductor in...

MITSUBISHI M54125L/P EARTH LEAKAGE CURRENT DETECTOR DESCRIPTION The M54125 is a semiconductor integrated circuit consisting of an amplifier for high-speed earth leakage circuit breaker. PIN CONFIGURATION (TOP VIEW) Capacitor MM → ← 1 FEATURES q Satisfies JIS C 8371 q Temperature-stable input current trigger threshold (VLKT = 9mV) q Capable of detecting a lost phase on the neutral line q Economical, low external component count q Highly resistant to noise and power surges q Wide operating temperature range (Ta = -20 – +80°C) Output OUT ← 2 GND NC Capacitor CTD 3 4 ← 5 TD → NC 6 M54125L Capacitor CWF Input ← 7 WF → IBL → 8 RX → 9 NC 10 11 12 APPLICATION High-speed earth-leakage circuit breakers External resistor FUNCTION The M54125 is a semiconductor integrated circuit for use in the amplifier section of earth-leakage circuit breakers. It consists of a differential amplifier, one-shot circuit, output circuit, current regulator, waveform regulator and delay circuit. The following description refers to the block diagram, application example, and operational waveforms. Input Bias voltage NC VS ILK → 13 VB 14 Outline 14P5A Input Bias voltage ILK → 1 VB 2 10 VS N.C: no connection 9 ← RX External resistor M54125P ← 3 Capacitor MM → Output OUT ← 4 GND 5 8 ← IBL Input → WF Capacitor CWF 7 ← ← TD 6 → Capacitor CTD Outline 10P2-C BLOCK DIAGRAM (Note: Pin No. in parentheses are of M54125L) VS 10 (12) External resistor RX 9 (9) Input IBL 8 (8) ...