Datasheet
EARTH LEAKAGE CURRENT DETECTOR
EARTH LEAKAGE
CURRENT DETECTOR IC
BD54123F
●General
Description
BD54123F integrates leakage detector and amplifier.
Especially, it is suitable for high sensitivity and a high-
speed operation use, and since the operating temperature
range is wide, it can be used for various uses.
●Key
Specifications
■
Operating supply voltage range：
12V to 22V
■
Operating temperature range：
－40°C
to
＋85°C
■
Supply current：
330μA(typ.)
■
Trip voltage：
4.92mV to 11.06mV
■
Output current ability(Ta=－40℃)：
－200μA½(min.)
W(Typ.) x D(Typ.) x H(Max.)
5.00mm x 6.20mm x 1.71mm
●Features
■
Small temperature fluctuation and high input
sensitivity
■
Wide operating temperature range
●Applications
■
Earth leakage circuit breaker
■
Earth leakage circuit relay
●Packages
SOP8
●Typical
Application Circuit Example
R
VS
VZ
SCR
C
OS
C
VS
8
VS
7
OS
6
NR
5
SC
Reference voltage
output block
C1
VR
Trip
Coil
IN
GND
OD
1
C
VR
C
IN
2
R
IN
3
4
C
OD
ZCT:Zero current transformer
TEST SW&R
○Product
structure：Silicon monolithic integrated circuit
www.rohm.co.jp
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This
product is not designed protection against radioactive rays.
1/11
TSZ02201-0RCR1GZ00060-1-2
2012.10.29 Rev.002
Latch block
BD54123F
●Pin
Configurations
SOP8
(TOP VIEW)
8
7
6
5
Reference voltage
output block
Datasheet
●Block
Diagrams
8
VS
7
OS
6
NR
5
SC
1
2
3
4
VR
IN
GND
OD
1
●Pin
Descriptions
Pin No.
1
2
3
4
5
6
7
8
Symbol
VR
IN
GND
OD
SC
NR
OS
VS
Function
Reference voltage
Input
Ground
Output of input comparator
Input of latch circuit
Noise absorption
Output
Power supply
2
3
4
●Absolute
Maximum Ratings
(Ta=25℃)
Parameter
Supply current
IN-VR current
VR pin current
IN terminal current
SC terminal current
Power Supply voltage
Input terminal voltage
OD/SC/NR/OS terminal voltage
Power dissipation
Storage temperature
*1
*2
*1
Symbol
IS
I
IN-VR
I
VR
I
IN
I
SC
VS
V
VR/IN
V
OD/SC/NR/OS
Pd
T
stg
Rating
8
±250
30
30
5
36
17
8
680
*2
－55
to
＋150
Unit
mA
mA
mA
mA
mA
V
V
V
mW
℃
The power-supply voltage is limited by the internal clamping circuit.
To use at temperature above Ta＝25[℃] reduce 5.5mW/℃. Mounted on a glass epoxy PCB (70mm×70mm×1.6mm)
www.rohm.co.jp
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/11
TSZ02201-0RCR1GZ00060-1-2
2012.10.29 Rev.002
Latch block
BD54123F
●Recommended
Operating Ratings
Parameter
Supply voltage
Operating temperature
External capacitor
between VS and GND
External capacitor
between OS and GND
Symbol
VS
T
opr
C
VS
C
OS
Limits
12 to 22
－40
to
＋85
1≦
≦1
Unit
V
℃
μF
μF
Datasheet
●Electrical
Characteristics
(Unless
otherwise specified, VS=12V, GND=0V, Ta=25℃)
Parameter
Symbol
Temperature
range
-40℃
Supply current
IS1
25℃
85℃
Trip voltage
OD Source current
OD Sink current
V
T
I
ODSO
I
ODSI
-40℃ to +85℃
25℃
25℃
-40℃
OS Source current
I
OSSO
25℃
85℃
OS Sink current
SC ON voltage
Input clamp voltage
Differential input clamp
voltage
Maximum current voltage
Supply current 2
＊
1
Limits
Min.
-
-
-
4.92
-27.2
16.7
-200
-100
-75
200
1.00
4.2
0.6
26
-100
0.5
1.8
Typ.
-
330
-
7.50
-20.6
26.0
-
-
-
-
1.24
5.5
1.0
29
-
-
2.9
Max.
520
500
460
11.06
-14.0
35.3
-
-
-
-
1.48
6.7
1.4
32
-
-
4.0
Unit
Conditions
μA
ΔVIN=V
VR
-V
IN
=30mV
mV
μA
μA
V
T
=ΔVIN=V
VR
-V
IN
ΔVIN=V
VR
-V
IN
=30mV,
V
OD
=1.2V
V
OD
=0.8V,
ΔVIN=V
VR
-V
IN
=0mV
μA
V
SC
=2.0V, V
OS
=0.8V
I
OSSI
V
SCON
V
IC
V
IDC
V
SM
I
OS2
V
SOFF
t
ON
-40℃ to +85℃
25℃
-40℃ to +85℃
-40℃ to +85℃
25℃
-40℃ to +85℃
25℃
25℃
μA
V
V
V
V
μA
V
ms
V
SC
=0.2V, V
OS
=0.2V
I
IC
=20mA
I
IDC
=100mA
IS=7mA
IS=900μA,V
SC
=2.0V
V
OS
=0.8V
Latch OFF Supply Voltage
Operating time
＊
2
*1 Supply current 2 is OS source current value when the power supply current(Is=900μA) is given.
*2 Operating time is time until output voltage reaches 0.8V after detecting the leakage signal.
Conditions : Capacitor(0.047μF) is connected between OD(OS) and GND.
www.rohm.co.jp
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/11
TSZ02201-0RCR1GZ00060-1-2
2012.10.29 Rev.002
BD54123F
●Test
circuits
Datasheet
1.IS1
2.V
T
3.I
ODSO
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
2
3
4
5
6
7
+
8
A
IS
1
2
3
4
5
6
7
8
VS
1
2
3
4
A
5
6
7
8
VS
VS
ΔVIN
ΔVIN
V
VOD
+
ΔVIN
IOD
VOD
4.I
ODSI
5.I
OSSO
/I
OSSI
6.V
SCON
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
2
3
4
A
5
6
7
8
1
2
3
4
5
6
VSC
7
8
VS
1
2
3
4
5
6
VSC
7
8
VS
+
IOD
VOD
+
A
IOS
VOS
V
Vos
7.V
IC
8.V
IDC
9.V
SM
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
2
3
4
5
6
7
8
VS
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
IS
IC
V
VIC
IIDC
V
VSM
V
VIDC
10.I
OS2
11.V
SOFF
12.t
ON
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
2
3
4
5
6
VSC
+
7
8
IS
1
2
3
4
5
6
7
V
V
OS
8
VS
1
2
3
4
5
6
7
8
VS
0.047
μF
0.047
μF
A
IOS
VOS
0.047
μF
V
ΔVIN
●Timing
Chart
Input voltage
between IN and VR
ΔVIN
(IN-VR)
V
T
V
SCON
OD/SC terminal voltage
V
OD
/V
SC
OS terminal voltage
V
OS
0.8V
t
ON
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© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/11
TSZ02201-0RCR1GZ00060-1-2
2012.10.29 Rev.002
BD54123F
●Typical
Performance Curves(reference data)
Datasheet
1.0
0.9
0.8
P o w e r D issip a tio n [W ]
S u p p ly C u rre n t IS [u A ]
800
700
600
500
400
300
200
100
0
105℃
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
25
50
75
85
－60℃
25℃
100
125
150
0
5
Ambient Temperature Ta [℃]
10
15
20
Power Supply VS [V]
25
30
Figure 1
Derating curve
Figure 2
Circuit current - Supply voltage
40
0
O S term inal S ource C urrent I
O S S O
[uA ]
30
20
10
0
-10
-100
R a te of fluctua tion
Δ
[% ]
RIN=300
105℃
-200
25℃
-300
RIN=1kΩ
-20
-30
-40
-60
-40
-20
0
20
40
60
80
100
120
Ambient Temperature Ta [℃]
－60℃
-400
-500
0
5
10
15
20
25
Power Supply VS [V]
Figure 3
Trip voltage fluctuation rate
- Ambient temperature
Figure 4
OS terminal source current - Supply voltage
www.rohm.co.jp
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/11
TSZ02201-0RCR1GZ00060-1-2
2012.10.29 Rev.002
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