M54128L Datasheet, PDF (1/22 Pages) Mitsubishi Electric Semiconductor – EARTH LEAKAGE CURRENT DETECTOR

M54128L/FP
EARTH LEAKAGE CURRENT DETECTOR
REJ03F0027-0100Z
Rev.1.0
Sep.16.2003
Description
The M54128L/FP is a semiconductor integrated circuit having leakage detection and abnormal voltage detection
functions for high-speed earth leakage interruption, and was developed for use in earth leakage breakers.
Features
• Lightning surge protection
Two-count method adopted
Improved dead-time performance for lightning impulses
• IEC support: 1.5 count method switching
• High input impedance
Filter circuit can be configured using external capacitor, resistor
Improved high-frequency, high harmonic superposition performance
• High input sensitivity: V_T=6.5 Vrms
• Abnormal voltage detection (N open) function
Neutral line open-phase protection in single-phase three-wire designs
Function halt control (circuit current reduction)
• Low-voltage operation 7 to 12 V (versus 12 to 20 V in previous series)
Standby: 820 µA standard (V_S = 9 V, Ta = 25°C)
SCR on: 740 µA standard (V_S = 9 V, Ta = 25°C)
• Highly stable design
Circuit designed for minimum characteristic fluctuation with changes in power supply voltage, ambient temperature
Applications
• Earth leakage breaker
Recommended Operating Conditions
• Power supply operating conditions: 7 to 12V
• operating temperature: –20 to85°C
Rev.1.0, Sep.16.2003, page 1 of 21