NJM1431A
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR
■GENERAL
DESCRIPTION
The
NJM1431A
is a precision shunt regulator.
Compared to the conventional 431, The
NJM1431A
offers
higher voltage accuracy and small package availability to
support a wide range of applications.
■PACKAGE
OUTLINE
NJM1431AL1
NJM1431AU
■FEATURES
●
Operating Voltage
V
REF
to 36V
●
Precision Voltage Reference
2.465V±1%
●
2.9mm × 1.5mm to MTP (SOT23) package
●
Adjustable Output Voltage For
External Resistance two Parts.
●
Bipolar Technology
●
Package Outline
TO-92, SOT-89 (3pin), MTP5
NJM1431AF
■BLOCK
DIAGRAM
CATHODE
■PIN
CONFIGURATION
REFERENCE
1
2
3
1
2
3
1. REFERENCE
2. ANODE
3. CATHODE
NJM1431AL1
V
REF
NJM1431AU
NC 1
ANODE
5 REFERENCE
ANODE 2
NC 3
4 CATHODE
NJM1431AF
Ver.2004-01-13
-1-
NJM1431A
■ABSOLUTE
MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
Cathode Voltage
V
KA
Continuous Cathode Current
I
K
Reference Input Current
I
REF
Power Dissipation
Operating Temperature Range
Storage Temperature Range
P
D
T
OPR
T
STG
MAXIMUM RATINGS
+37
-100 ~ 150
-0.05 ~ 10
(TO-92)
500
(SOT-89) 350
(MTP5)
200
-40 ~ +85
-40 ~ +150
UNIT
V
mA
mA
mW
°C
°C
■RECOMMENDED
OPERATING CONDITIONS (Ta=25°C)
PARAMETER
SYMBOL
MIN.
TYP.
Cathode Voltage
V
KA
V
REF
–
Cathode Current
I
K
1
–
MAX.
36
100
UNIT
V
mA
■ELECTRICAL
CHARACTERISTICS (I
K
=10mA, Ta=25°C)
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
KA
I
REF
I
MIN
I
OFF
Z
KA
TEST CONDITION
V
KA
=V
REF
V
REF
≤
V
KA
≤
10V
10V
≤
V
KA
≤
36V
R1=10kΩ, R2=∞
V
KA
=V
REF
,
∆V
REF
=1%
V
KA
=36V, V
REF
=0V
V
KA
= V
REF
, f≤1kHz
1mA
≤
I
K
≤
100mA
(*1)
(*2)
(*2)
(*2)
(*1)
(*3)
(*1)
MIN.
2.440
–
–
–
–
–
–
TYP.
2.465
±1.4
±1.0
2
0.4
0.1
0.2
MAX.
2.490
±2.7
±2.0
4
1.0
1.0
0.5
UNIT
V
mV/V
mV/V
uA
mA
uA
Ω
■TEMPERATURE
CHARACTERISTICS (I
K
=10mA, Ta= -40°C ~ 85°C)
PARAMETER
SYMBOL
TEST CONDITION
Reference Voltage
Change
Reference Input Current
Change
∆V
REF
∆I
REF
V
KA
=V
REF
R1=10kΩ, R2=∞
(*1)
(*2)
MIN.
–
–
TYP.
8
0.4
MAX.
17
1.2
UNIT
mV
uA
The maximum value of “Dynamic Impedance“, “Reference Voltage Change” and “Reference Input Current Change”
are determined based on sampling evaluation from the 5 initial production lots, and thus not tested in the production test.
Therefore, these values are for the reference design purpose only.
V
REF
···Reference
voltage includes error.
(*1): Test Circuit (Fig.1)
(*2): Test Circuit (Fig.2)
(*3): Test Circuit (Fig.3)
-2-
Ver.2004-01-13
NJM1431A
■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
Fig.1 V
KA
=V
REF
to test circuit
V
O
=V
KA
=V
REF
Fig.2 V
KA
>V
REF
to test circuit
R1
V
O
=
V
KA
=
V
REF
1
+
+
I
REF
×
R1
R2
Fig.3 I
OFF
to test circuit
■POWER
DISSIPATION VS. AMBIENT TEMPERATURE
600
TO-92
Power Dissipation P
D
(mW)
500
400
300
MTP5
200
100
0
0
25
50
75
Ambient Temperature Ta (°C)
100
SOT-89
Ver.2004-01-13
-3-
NJM1431A
■TYPICAL
CHARACTERISTICS
Reference Voltage vs. Cathode Current
2.5
Reference Voltage V
REF
(V)
2.48
2.46
2.44
2.42
2.4
0.1
(V =V
KA
REF
, Ta=25 C)
o
2.49
Reference Voltage V
REF
(V)
2.48
2.47
2.46
2.45
Reference Voltage vs. Temperature
(V
KA
=V
REF
, I
K
=10mA)
1
10
Cathode Current I
K
(mA)
100
2.44
-50 -25 0 25 50 75 100 125 150
o
Ambient Temperature Ta ( C)
Reference Voltage vs. Cathode Voltage
(I =10mA, R1=Variable, R2=10kΩ, Ta=25
o
C)
K
2.49
Reference Voltage V
REF
(V)
2.48
2.47
2.46
2.45
2.44
Reference Input Current I
REF
(uA)
2
1.5
1
0.5
Reference Input Current vs. Temperature
(I =10mA, R1=10kΩ, R2= )
K
0
-50 -25 0 25 50 75 100 125 150
o
Ambient Temperature Ta ( C)
8
0
10
20
30
Cathode Voltage V (V)
KA
40
Safety Operating Boundary Condition
o
(V =V , C =Ceramic Capacitor, Ta=25 C)
KA
REF
OUT
100
Dynamic Impedance
0.5
Dynamic Impedance |Z
KA
| (Ω)
0.4
0.3
0.2
0.1
0
0.001 0.01
0.1
1
10
100
Cathode Current Frequency f (kHz)
(I
K
=1 to 100mA, V
KA
=V
REF
, Ta=25
o
C)
Cathode Current I
K
(mA)
80
60
40
20
0
0.01
Stable
Operaion
Region
Aunstable Operaion
Region
10
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.
0.1
1
Output Capacitor C
OUT
(uF)
-4-
Ver.2004-01-13
NJM1431A
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook 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.
Ver.2004-01-13
-5-
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
