SEMICONDUCTOR
TECHNICAL DATA
PROGRAMMABLE PRECISION REFERENCES
KIA431 Series
BIPOLAR LINEAR INTEGRATED CIRCUIT
The KIA431 Series integrated circuits are three-terminal programmable shunt regulator diodes.
These monolithic IC voltage reference operate as a low temperature coefficient zener which is programmable from V
ref
to 36 volts with two external resistors. These devices exhibit a wide operating current range of 1.0 to 100mA with a
typical dynamic impedance of 0.22Ω.The characteristics of these references make them excellent replacements for
zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 volt
reference makes it convenient to obtain a stable reference from 5.0 volt logic supplies, and since the KIA431 Series
operates as a shunt regulator, it can be used as either a positive or negative voltage reference.
FEATURES
・Divice
Code Name :KIA431 + V
ref
Code + Package Code+Pin Configuration Code
ITEM
Code
Blank
Z
A
B
V
ref
Code
Tolerance (%)
±2.2
±1.5
±1.0
±0.5
Package Code
Code
Blank
F
S
T
M
Package
TO-92
SOT-89
TSM
TSV
SOT-23
KIA431
・Low
Dynamic Output Impedance : 0.22Ω(Typ.).
・Sink
Current Capability of 1.0 to 100mA.
・Equivalent
Full-Range Temperature Coefficient of 50ppm/℃ (Typ.).
・Temperature
Compensated for Operation Over Full Rated Operating Temperature Range.
・Low
Output Noise Voltage.
・Qualified
to AEC-Q101.
LINE UP
Type No.
KIA431
KIA431Z
KIA431A
KIA431B
KIA431F
KIA431ZF
KIA431AF
KIA431BF
KIA431T
KIA431AT
KIA431BT
KIA431S
KIA431AS
KIA431BS
KIA431M
KIA431ZM
KIA431AM
KIA431BM
SOT-23
TSM
2.5 ~ 36
TSV
SOT-89
3A
3Z
3B
3C
43C
43A
43B
43C
43A
43B
43C
43Z
43A
43B
TO-92
Operating Voltage(V)
Package
Marking
PIN CONFIGURATION (SOT-23)
3
3
TOP
VIEW
1
2
2
1
1. Cathode 2. Ref 3. Anode
2013. 4. 16
Revision No : 18
1/8
KIA431 Series
BLOCK DIAGRAM
Cathode (K)
Reference (R)
+
-
Cathode (K)
Reference (R)
2.5V
ref
Anode (A)
Anode (A)
ORDERING INFORMATION
K IA4 31
Pb-Free / Halogen-Free
Packing Specification
Package code
V
ref
Tolerance code
V
ref
Tolerance code
Blank
Z
A
B
±2.2%
±1.5%
±1.0%
±0.5%
Blank
F
S
T
M
TO-92
SOT-89
Packing Specification
TSM / SOT-23
TSV
Package Code
TO-92
SOT-89
TSM
TSV
SOT-23
P
H
Pb-Free / Halogen-Free
Pb-Free
Halogen-Free
AT : Taping of AMMO PACK type
RTF : RTF type
RTK : RTK type
RTK : RTK type
2013. 4. 16
Revision No : 18
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KIA431 Series
MAXIMUM RATINGS (Ta=25℃)
(Full operating ambient temperature range applies unless otherwise noted.)
CHARACTERISTIC
Cathode To Anode Voltage
Cathode Current Range, Continuous
Reference Input Current Range, Continuous
Operating Junction Temperature
Operating Temperature
Storage Temperature
KIA431
KIA431F
Total Power Dissipation
KIA431M
KIA431S
KIA431T
Note1) Package mounted on 99.5% Alumina 10×8×0.6mm
Note2) Package mounted on a ceramic board. (600㎣×0.8㎜ )
(Note1)
(Note2)
P
D
SYMBOL
V
KA
I
K
I
ref
T
j
T
opr
T
stg
RATING
37
-100½150
-0.05½10
150
-40½85
-65½150
700
800
350
900
550
mW
UNIT
V
mA
mA
℃
℃
℃
ELECTRICAL CHARACTERISTICS (Ta=25℃)
CHARACTERISTICS
KIA431
Reference Input
Voltage
KIA431Z
V
ref
KIA431A
KIA431B
Reference Input Voltage
Deviation Over Temperature Range
Ratio of Change in Reference Input
Voltage to Change in Cathode to
Anode Voltage
Ta=25℃
Reference Input Current
Ta=T
opr
Reference Input Current
Deviation Over Temperature Range
Minimum Cathode Current For Regulation
Off-State Cathode Current
Dynamic Impedance
ΔI
ref
I
min
I
off
Z
ka
Figure 2
Figure 1
Figure 3
Figure 1
(Note 2)
I
ref
Figure 2
I
K
=10mA, R1=10kΩ, R2=∞
-
I
K
=10mA, R1=10kΩ, R2=∞
V
KA
=V
ref
V
KA
=36V, V
ref
=0V
V
KA
=V
ref
, I
K
=1.0½100mA,
f≦1.0kHz
-
-
-
-
-
0.8
0.5
2.6
0.22
6.5
2.5
1.0
1000
-
μ
A
mA
nA
Ω
ΔV
ref
Figure 1
(Note 1)
V
KA
=V
ref
, I
K
=10mA
ΔV
KA
=
ΔV
ref
/
ΔV
KA
Figure 2
I
K
=10mA
10V½V
ref
ΔV
KA
=
36V½10V
-
1.8
4.0
μ
A
Figure 1
V
KA
=V
ref
, I
K
=10mA
2.470
2.4825
-
-
-
2.495
2.495
7.0
-1.4
-1.0
2.520
2.5075
30
-2.7
mV/V
-2.0
V
V
mV
SYMBOL
TEST
CIRCUIT
TEST CONDITION
MIN.
2.440
2.458
TYP.
2.495
2.495
MAX.
2.550
2.532
UNIT
V
V
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Revision No : 18
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KIA431 Series
FIGURE 1-TEST CIRCUIT FOR V
KA
=
V
ref
Input
I
K
V
KA
FIGURE 3-TEST CIRCUIT FOR I
off
Input
I
off
V
KA
V
ref
FIGURE 2-TEST CIRCUIT FOR V
KA
>
V
ref
Input
I
K
R1
I
ref
V
KA
= V
ref
( 1+
R1
) + I
ref
R2
Example :
ΔV
ref
= 8.0mV and slope is positive,
V
ref
at 25℃=2.495V,
ΔTa=70℃
V
KA
α
ref
=
V
R1
0.008×10
6
70×(2.495)
= 45.8 ppm/℃
Note 2: The dynamic impedance Z
ka
is defined as:
|Z
ka
| =
ΔVKA
ΔIk
R2
V
ref
When the device is programmed with two external
Note 1:
The deviation parameter
ΔV
ref
is defined as the differences
between the maximum and minimum values obtained over the
full operating ambient temperature range that applies.
|Z
ka’
| = |Z
ka
| (1+
R1
R2
)
resistors, R1 and R2, (refer to Figure 2) the total
dynamic impedance of the circuit is defined as:
V
ref
Max.
V
ref
= V
ref (Max.)
-
V
ref
(Min.)
Ta = T
2
- T
1
V
ref
Min.
T1
T2
AMBIENT TEMPERATURE
The average temperature coefficient of the Reference
input voltage,
ΔV
ref
, is defined as:
(
V
α
ref
(
ppm
℃
)=
ΔV
ref
V
ref
at 25℃
ΔTa
ΔV
ref
×
10
6
ΔTa(V
ref
at 25℃)
)
×
10
6
=
α
ref
can be positive or negative depending on whether
V
V
ref
Min. or V
ref
Max. occurs at the lower ambient temperature.
2013. 4. 16
Revision No : 18
4/8
KIA431 Series
I
K
- V
KA
CATHODE CURRENT I
K
(mA)
150
CATHODE CURRENT I
K
(µA)
V
KA
=V
ref
Ta=25 C
I
K
- V
KA
800
600
V
KA
=V
ref
Ta=25 C
100
50
0
-50
-100
-2.0
-1.0
0
1.0
2.0
3.0
400
200
0
-200
-1.0
0
1.0
2.0
3.0
CATHODE VOLTAGE V
KA
(V)
DYNAMIC IMPEDANCE Zka (Ω)
CATHODE VOLTAGE V
KA
(V)
Zka
V
ref
- V
KA
CHANGE IN REFERENCE INPUT
VOLTAGE V (mV)
ref
0
I
K
=10mA
Ta=25 C
- f
100
I
K
=1.0mA~100mA
Ta=25 C
10
-8.0
-16
1.0
-24
0.1
1.0k
10k
100k
1.0M
10M
-32
0
10
20
30
40
FREQUENCY f (Hz)
CATHODE VOLTAGE V
KA
(V)
3.0
PULSE RESPONSE
Ta=25 C
OPEN LOOP VOLTAGE GAIN G
VO
(dB)
VOLTAGE SWING (V)
G
VO
- f
60
50
40
30
20
10
I
K
=10mA
Ta=25 C
OUTPUT
2.0
1.0
0
5.0
0
0
4.0
8.0
12
16
20
INPUT
0
-10
1.0k
10k
100k
1.0M
10M
1000
900
TIME t (µs)
P
D
- Ta
ALLOWABLE POWER
DISSIPATION P
D
(mW)
KIA431S
KIA431F
FREQUENCY f (Hz)
800
700
600
500
400
300
200
100
0
0
25
50
75
100
125
150
175
KIA431M
KIA431T
KIA431
AMBIENT TEMPERATURE Ta ( C)
2013. 4. 16
Revision No : 18
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