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.
DIP-8
SIP-8
FEATURES
* With good input sensitivity current temperature characteristics
* High input sensitivity :VT=6.1mV (Typ.)
* Only need low external component count
* High noise and surge-proof
* Low power dissipation :PD=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
M54123LK-D08-T
M54123LK-G08-T
-
Halogen Free
M54123LG-D08-T
M54123LG-G08-T
M54123LG-S08-R
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Copyright © 2015 Unisonic Technologies Co., Ltd
Package
Packing
DIP-8
SIP-8
SOP-8
Tube
Tube
Tape Reel
1 of 9
QW-R122-001.E
M54123L
LINEAR INTEGRATED CIRCUIT
MARKING
DIP-8
SIP-8
SOP-8
PIN CONFIGURATIONS
1
2
3
4
5
6
7
VR
1
8
VS
IN
2
7
OS
GND
3
6
NR
OD
4
5
SC
8
SIP-8
DIP-8 / SOP-8
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
VR
IN
GND
OD
SC
NR
OS
VS
DESCRIPTION
Reference voltage terminal
Input terminal
Ground
Differential amplifier output terminal
Latch input terminal
Terminal for noise absorption
Output terminal
Supply voltage terminal
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QW-R122-001.E
M54123L
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
VR
Reference Voltage
1
8
Latch Circuit
Reference Voltage Generator
Vs
GND
7
Os Output
+
AMP
6
-
NR Terminal for
Noise Absorption
3
2
4
5
IN
Input
OD
Differential
Amplifier Output
Sc
Latch
Input
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QW-R122-001.E
M54123L
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
IS
RATINGS
UNIT
8
mA
Between VR-IN (Note 2)
250
mA
VR Pin Current
IVR
Between VR-GND
30
mA
Between IN-VR(Note 2)
-250
mA
Between IN-VR(Note 2)
250
mA
IN Terminal Current
IIN
Between IN-GND
30
mA
Between VR-IN (Note 2)
-250
mA
SC Terminal Current
ISC
5
mA
Power Dissipation
PD
200
mW
Operating Temperature
TOPR
-20~ +80
°C
Storage Temperature
TSTG
-55~ +125
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Current value between VR and IN, and between IN and VR is less than 1ms in the pulse width, and duty
cycle is less than 12%, In applying AC current continuously, it is 100 mA in the off-state.
Supply Current
RECOMMENDED OPERATING CONDITIONS (unless otherwise specified)
PARAMETER
Supply Voltage When Latch Circuit Is Off-State
External Capacitor Between Vs and GND
External Capacitor Between Os and GND
SYMBOL
VS
CVS
COS
MIN
12
1
TYP
MAX
UNIT
V
μF
μF
1
ELECTRICAL CHARACTERISTICS (TA=-20~+80°C, unless otherwise specified)
PARAMETER
SYMBOL
Supply Current
IS1
Trip Voltage
VT
Timed Current1
ITD1
Timed Current2
ITD2
Output Current
IO
SC “ON” Voltage (Note3)
SC Input Current
VSC(ON)
ISC(ON)
Output Low-Level Current
IOSL
Input Clamp Voltage
VIC
Differential Input Clamp
Voltage
Maximum Current Voltage
VIDC
VSM
TEST CONDITIONS
TA=-20°C
VS=12V,VR-VI=30mV
TA=25°C
(See Test Circuit 1)
TA=80°C
VS=16V, VR-VI, TA=-20~+80°C
(Note2) (See Test Circuit 2)
VS=16V, VR-VI=30mV, VOD=1.2V, TA=25°C
(See Test Circuit 3)
VS=16V, short circuit between VR and VI,
VOD=0.8V, TA=25°C (See Test Circuit 4)
IS1=580μA,TA=-20°C
VSC=1.4V,VOS=0.8V
IS1=530μA,TA =25°C
(See Test Circuit 5)
IS1=480μA,TA =80°C
VS=16V, TA=25°C (See Test Circuit 6)
VS=12V, TA=25°C (See Test Circuit 7)
VS=12V,VOSL=0.2V, TA=-20~+80°C
(See Test Circuit 8)
VS=12V, IIC=20mA, TA=-20~+80°C
(See Test Circuit 9)
IIDC=100mA, TA=-20~+80°C
(See Test Circuit 10)
ISM=7mA, TA=25°C (See Test Circuit 11)
VR-VI, VOS=0.6V, TA=-20~+80°C
(Note 5) (See Test Circuit 12)
MIN
MAX
580
530
480
UNIT
μA
μA
μA
9
mVrms
-12
-30
μA
17
37
μA
1.4
5
μA
μA
μA
V
μA
400
4
-200
-100
-75
0.7
μA
4.3
6.7
V
0.4
2
V
20
28
V
1100
μA
IS2
Latch Circuit is Off-State
Supply Voltage (Note6)
VS(OFF)
TA=25°C (See Test Circuit 13)
0.5
Operating Time (Note 7)
TON
VS=16V,VR-VI=0.3V, TA=25°C
(See Test Circuit 14)
2
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6.1
200
Supply Current 2(Note 4)
UNISONIC TECHNOLOGIES CO., LTD
TYP
V
4
ms
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LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Cont.)
Notes: 1. Typical values are at TA=25°C
2. When standard value of voltage (60Hz) between VR and VI is minimum, and output OS is low-level, or
when standard value of voltage (60Hz) between VR and VI is maximum, and output OS is high-level, it is
considered as a good one.
3. When standard value of voltage VSC(ON) is minimum, and output OS is low-level, or when standard value of
voltage VSC(ON) is maximum, and output OS is high-level, it is considered as a good one.
4. Supply current 2 is necessary to keep high in output OS.
5. After applying 30mV between VR and VI and shorting between them, it is considered as a good one if
standard value of IGT flows out of output OS.
6. After supply voltage applies 12V and output OS is high-level, it is considered as a good one in the
standard value of supply voltage and in the low-level of output OS.
7. Operating time is a time from applying fixed input till operating latch circuit in 0.047μF between OD and
GND.
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QW-R122-001.E
M54123L
LINEAR INTEGRATED CIRCUIT
TEST CIRCUITS
1
3
2
VR IN GND OD Sc NR Os Vs
1
2
3
4
5
100
VI
6 7
Open
8
1 2
100
1K
Vs
Vsm
0.047
µF
0.047
µF
VR IN GND OD Sc NR Os Vs
VR IN GND OD Sc NR Os Vs
Is
4
3
4
5
VI
6 7
Open
vos
8 Vs
1
100
0.047
µF
0.047
µF
5
VR IN GND OD Sc NR Os Vs
1
2
3
4
5
100
6 7
Open
8
Vs
0.047
µF
ITD2
3 4
ITD1
5
8 Vs
0.047
µF
VOD
VI
6 7
Open
0.047
µF
6
VR IN GND OD Sc NR Os Vs
VR IN GND OD Sc NR Os Vs
1
1
2
3
Open
VOD
VI
2
0.047
µF
4 5
6 7 8
Is
Open Open
3K
0.047 Vos 0.047
µF
Vsc µF
2
3
100
VI
4 5 6 7 8 Vs
Open Open
3K Vos
0.0
0.047
0.047
Vsc
47
µF
µF
“ON”
µF
9
8
VR IN GND OD Sc NR Os Vs
VR IN GND OD Sc NR Os Vs
VR IN GND OD Sc NR Os Vs
1
1
1
2
3
4
5
Open
100
6 7
Open
Vos
8 Vs
3
100
0.047
µF
VI
2
Isc“ON”
0.047
µF
10
VI
4 5 6 7
Open Open
IosL
VosL
0.047
µF
8 Vs
1
2
3
4
5
6
7
1
2
3
100
Open
IIDC
4 5 6 7
Open Open
IIC
8 Vs
0.047
µF
0.047
µF
VIC
12
VR IN GND OD Sc NR Os Vs
8
3
100
0.047
µF
11
VR IN GND OD Sc NR Os Vs
2
4 5 6 7
Open Open
VI
VIDC
0.047
µF
8
VR IN GND OD Sc NR Os Vs
Ism
Vsm
0.047
µF
1
2
100
VI
3
4
5
6 7 8
Open Vos
Is2
0.047 0.047 IGT 0.047
µF
µF
µF
14
13
VR IN GND OD Sc NR Os Vs
2
100
VI
3
4
5
6 7
Open
Vos
1
0.047 0.047
µF
µF
8
VR IN GND OD Sc NR Os Vs
Vs
"OFF"
1
2
3
100
0.047
µF
VI
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4
5
6 7
Open
0.047 0.047
µF
µF
8 Vs
0.047
µF
Note: The unit of resistance is ohm.
Please insurt 0.01µF between pin
1 and pin 3 in test
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M54123L
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
High-Speed Leakage Circuit Breaker With UTC M54123L
Trip
Coil
VS
8
R2
AC
Line
6
UTC M54123L
C4
R1
SCR (Note)
CR2AM
CR03AM
CRO2AM
7
GND
3
1
5
4
2
C3
RP=100Ω
RL
C6
C1
AC
Line
{
C2
C5
ZCT
Note: Gate current must be selected.
Please select voltage resistance by AC supply voltage
Note: The value of R1, R2, C4, and C5 should be chosen in order to keep at least 12V in Vs.
Please connect C4 (>1μF) and C2 (<1μF).
ZCT and load resistance RL of ZCT are connected between input pin 1 and 2.
Protective resistance (RP=100Ω) must be insurted.
RL and amplifier’s output (in Pin 4) regulates sensitivity current
External capacitor C1 between pin 4 and GND is used for noise removal.
Please connect a varistor or a diode (2 pcs.) to ZCT in parallel, because of when large current is grounded in
the primary side (AC line) of ZCT, the following situation can be abandoned: The wave form in the secondary
side of ZCT is distorted and some signals do not appear in the output of amplifier.
Please connect capacitor (about 0.047μF) between pin 6 and pin 7.
Capacitor C6 between pin 1 and GND is about 0.047μF for removing noise.
Operating Time vs. Input Voltage
1000
700
500
300
C1=0.047µF
Ta=25°C
60Hz
100
70
50
30
10
7
5
3
1
1
3
5 7 10
30 50 70 100
300 500
1000
Input Voltage, V1 (mVrms)
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M54123L
TYPICAL CHARACTERISTICS
Vcc Voltage vs. Supply Voltage
Supply Current 1 vs. Supply Voltage
700
12
Ta=-25°C
600
Supply Current 1, Is1 (µA)
10
Vcc Voltage, VCC (V)
25°C
8
75°C
6
4
500
Ta=-25°C
400
25°C
300
75°C
200
2
100
0
12
14
16
18
20
Supply Voltage, Vs (V)
Vcc voltage generates by the constant voltage circuit in IC.
This is measured not by M54123L but by a special
element.
0
8
10
Reference Voltage vs. Supply Voltage
2.5
5
10
15
20
Supply Voltage, Vs (V)
25
30
Bias Current vs.Ambient Temperature
1000
Ta=75°C
2.0
800
25°C
Bias Current, IIN (nA)
Reference Voltage, VR (V)
900
-25°C
1.5
1.0
0.5
700
600
500
400
300
200
100
0
2.5
4
8
12
16
Supply Voltage, Vs (V)
Differential Amplifier Output Voltage
vs.Differential Input Voltage
1.5
1.0
Ta=75°C
25°C
-25°C
0
5
-20
0
20 40
80
60
Ambient Temperature, Ta (°C)
100
Timing Current vs.Ambient Temperature
-50
2.0
0.5
0
-40
20
6
7
8
9
10
Differential Input Voltage △VI=VR-VIN (mV)
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Timed Current 1, ITD1 (µA)
0
Differential Amplifier Output Voltage, VOD
(V)
LINEAR INTEGRATED CIRCUIT
-40
-30
-20
-10
0
-40
-20
0
20 40
80
60
Ambient Temperature, Ta (°C)
100
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M54123L
TYPICAL CHARACTERISTICS(Cont.)
Os Voltage vs. Sc Voltage
4.5
Operating Time, TON (ms)
Os Voltage, Vos (V)
8
Ta=75°C
6
-25°C
25°C
4
2
0
0.4
0.6
0.8
1 1.2 1.4
SC Voltage, VSC (V)
1.6
Operating Time vs. Ambient
Temperature
4
3.5
3
2.5
2
1.8
-50
-25
0
25
50
75
100
Ambient Temperature, Ta °C
Output Current vs. Os Output Votltage
-400
Trip Voltage vs. Ambient Temperature
10
Ta=-25°C
Trip Voltage, VT (mVrms)
Output Current, Io (µA)
LINEAR INTEGRATED CIRCUIT
-300
25°C
-200
75°C
-100
8
6
4
2
0
0
0
1
2
3
4
5
6
7
OS Output Voltage, VOS (V)
-50
-25
0
25
50
75
100
Ambient Temperature, Ta (°C)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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