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
RENESAS [ RENESAS TECHNOLOGY CORP ]
