NJM2373/73A/76
Adjustable High Precision Shunt Regulator
■
GENERAL DESCRIPTION
The NJM2373/73A and NJM2376 are adjustable high
precision shunt regulators.
The output voltage can be adjusted to any value between
reference voltage and
14V
by two extend resistors.
NJM2373F/AF
NJM2376F
NJM2373U / AU
NJM2376U
■
PACKAGE OUTLINE
■
FEATURES
●
Operating Voltage
( V
REF
to
13V)
●
High Precision Reference Voltage
NJM2373
1.25V±2%
NJM2373A/76
1.25V±1%
●
Minimum External Parts
●
Bipolar Technology
●
Package Outline
MTP5 , SOT-89
■
BLOCK DIAGRAM
CATHODE
■
PIN CONFIGURATION
NC
1
ANODE 2
NC 3
4 REFERENCE
5 CATHODE
( NJM2373F/73AF )
REFERENCE
+
NC
1
ANODE 2
NC 3
5 REFERENCE
4 CATHODE
-
V
REF
( NJM2376F )
REFERENCE
1
ANODE
ANODE 2
CATHODE 3
( NJM2373U / AU )
CATHODE
1
ANODE 2
REFERENCE 3
( NJM2376U )
NJM2373/73A/76
■
ABUSOLUTE MAXIMUM RATINGS
PARAMETER
Cathode Voltage
Continuous Cathode Current
Reference Input Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
KA
I
KA
I
REF
P
D
(MTP5)
(SOT-89)
Topr
Tstg
RATINGS
+14
-30 to 50
-10 to 0.05
250
350
-40 to +85
-40 to +150
(Ta=25°C)
UNIT
V
mA
mA
mW
°C
°C
(Ta=25°C)
UNIT
V
mA
(I
K
=1mA, Ta=25°C)
TYP.
MAX.
UNIT
1250
1275
mV
1250
1262.5
—
—
2.0
0.4
0.01
0.12
±2.7
±2.0
4.0
1.0
1.0
—
mV/V
mV/V
µA
µA
µA
Ω
■
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Cathode Voltage
Cathode Current
SYMBOL
V
KA
I
K
MIN.
V
REF
1
TYP.
—
—
MAX.
13
30
■
ELECTRICAL CHARACTERISTICS
PARAMETER
Reference Voltage
Reference Voltage
Change vs. Cathode
Voltage Change
Reference Input Current
Minimum Input Current
Cathode Current
(Off Cond.)
Dynamic Impedance
SYMBOL
V
REF
∆V
REF
/∆V
REF
I
REF
I
MIN
I
OFF
|Z
KA
|
CONDITIONS
V
KA
=V
REF
(*1) . NJM2373
V
KA
=V
REF
(*1) , NJM2373A
NJM2376
|V
REF
|≤V
KA
≤5V(*2)
5V≤V
KA
≤13V(*2)
V
KA
= V
REF
R1=10kΩ,R2=∞ (*2)
V
KA
=V
REF
,∆V
REF
=-1%(*1)
V
KA
=13V,V
REF
=0V(*3)
V
KA
= V
REF
, f≤1kHz
1mA≤I
K
≤100mA(*1)
MIN.
1225
1237.5
—
—
—
—
—
—
■
TEMPERATURE CHARACTERISTICS
PARAMETER
Reference Voltage
Change
Reference Input Current
Change
SYMBOL
∆V
REF
∆I
REF
CONDITIONS
V
KA
=V
REF
(*1)
V
KA
= V
REF
R1=10kΩ,R2=∞(*2)
MIN.
(I
K
=10mA, Ta=-20 to +85°C)
TYP.
MAX.
UNIT
±10
0.5
mV
µA
|V
REF
| ••• Reference Voltage includes error.
(*1) : TEST CIRCUIT1(Fig.1)
(*2) : TEST CIRCUIT2(Fig.2)
(*3) : TEST CIRCUIT3(Fig.3)
NJM2373/73A/76
■
TEST CIRCUIT
INPUT
I
K
V
KA
INPUT
R1
I
K
I
REF
V
KA
INPUT
I
OFF
V
KA
V
REF
R2
V
REF
1.
V
KA
=V
REF
V
O
=V
KA
=V
REF
(Fig.1)
2. V
KA
>V
REF
V
O
=
V
KA
=
V
REF
(
1
+
R
1
/
R
2
)
+
I
REF
•
R
1
(Fig.2)
3. I
OFF
(Fig.3)
■
TYPICAL CHARACTERISTICS
Reference Voltage VS. Ambient Temperature
IK=1mA,VKA=VREF
1260
Pow e Dissipation VS. Ambient Temperature
400
350
Power Dissipation [mW]
250
200
150
100
50
0
0
20
40
60
80
100
Ambient Temperature [°C]
MTP-5
Reference Voltage [mV]
300
SOT-89
1255
1250
1245
1240
-40
-20
0
20
40
60
80
100
Ambient Temperature [°C]
Reference Voltage VS. Cathode Current
VKA=VREF,Ta=25°C
1255
Reference Voltage VS. Cathode Current
VKA=VREF,Ta=25°C
1400
1253
Reference Voltage [mV]
0
10
20
30
1254
Reference Voltage [mV]
1200
1000
1252
1251
800
1250
Cathode Current [mA]
600
0
20
40
60
80
100
Cathode Current [uA]
NJM2373/73A/76
Reference Voltage VS. Cathode Current
( IK=1mA,R1=10kΩ,R2=val500kΩ,Ta=25°C )
1.5
Of fstate Cathode Current VS. Cathode Voltage
VREF=VA,Ta=25°C
0.6
Offstate Cathode Current [nA]
0
5
10
15
Reference Voltage [mV]
1.0
0.5
0.5
0.4
0.0
Cathode Current [V]
0.3
0
5
10
15
Cathode Voltage [V]
Stable Operation Cathode Current
VS. Load Capacitance
V
KA
=V
REF
,T
a
=25℃
Stable Operation Cathode Current [uA]
500
Output Noise Voltage [uVrms]
Output Noise Voltage VS. Ambient Temperature
IK=1mA,VKA=VREF
120
110
100
90
80
70
60
400
300
Stable Operation Region
200
100
Aunstable Operation Region
0
0.001
0.01
0.1
1
10
-40
-20
0
20
40
60
80
100
Loda Capacitance [uF]
Ambient Temperature [°C]
Note) Oscillation might occur while operating within the
range of safety curve.
So that, it is necessary to make ample margins by
taking considerations of fluctuation of the device
NJM2373/73A/76
Reference Input Current VS. Ambient Temperature
IK=1mA,R1=10kΩ,R2=
∞
3.0
Output Noise Voltage VS. Ambient Temperature
IK=1mA,VKA=VREF
120
2.5
Output Noise Voltage [uVrms]
Reference Input Current [uA]
110
100
90
80
70
60
2.0
1.5
-40
-20
0
20
40
60
80
100
Ambient Temperature [°C]
-40
-20
0
20
40
60
80
100
Ambient Temperature [°C]
Dynamic Impedance VS. Frequency
IK=1mA,VKA=VREF,Ta=25°C
1.2
Voltage Gaine VS. Frequency
IK=1mA,Ta=25°C
80
60
360
270
Voltage Gain
180
Phase [deg]
Dynamic Impedance [Ω]
40
Voltage Gain [dB]
0.8
20
0
-20
-40
-60
Phase
90
0
-90
0.4
-180
-270
-360
1,000,000 10,000,000
0.0
1
10
100
1,000
10,000
100,000
Frequency [Hz]
-80
100
1,000
10,000
100,000
Frequency [Hz]
CAUTION]
The specifications on this data book are only given for
information, without any guarantee as regards either
mistakes or omissions. The application circuit in this data
book are described only to show representative usages of
the product and not intended for the guarantee or
permission of any right including the industrial rights.
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