M54123L_15 Datasheet, PDF (1/9 Pages) Unisonic Technologies – EARTH LEAKAGE CURRENT DETECTOR

UNISONIC TECHNOLOGIES CO., LTD
M54123L
LINEAR INTEGRATED CIRCUIT
EARTH LEAKAGE CURRENT
DETECTOR
SOP-8
 DESCRIPTION
The UTC M54123L is a semiconductor integrated circuit with
amplifier for a high-speed earth leakage circuit breaker.
For the amplifying parts of earth leakage circuit breaker, the
UTC M54123L consists of differential amplifier, latch circuit and
voltage regulator.
In normal operating, the UTC M54123L should be connected to
the secondary side of the ZCT (zero current transformers). Here
the ZCT detects leakage current different amplifiers’ both input.
Then the signals which have been amplified are integrated by
an external capacitor. The integrated signal connects to the input
terminal of latch circuit whose output is suitable for the
characteristics of high- speed earth leakage circuit breaker.
Until the input voltage reaches the fixed level, latch circuit
doesn’t become high. Then drives a thyristor which is connected to
latch circuit’s output terminal.
 FEATURES
* With good input sensitivity current temperature characteristics
* High input sensitivity :V_T=6.1mV (Typ.)
* Only need low external component count
* High noise and surge-proof
* Low power dissipation :P_D=5mW (Typ.)
* May be used both as 100V and 200V.
* Wide temperature range : from -20 °C to +80°C
 ORDERING INFORMATION
Order Number
Lead Free
Halogen Free
M54123LK-D08-T
M54123LG-D08-T
M54123LK-G08-T
M54123LG-G08-T
-
M54123LG-S08-R
Package
DIP-8
SIP-8
SOP-8
DIP-8
SIP-8
Packing
Tube
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R122-001.E