SEMICONDUCTOR
TECHNICAL DATA
PROGRAMMABLE PRECISION REFERENCES
KIA431AC/BC 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
・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.
・Minimum
Cathode Current for Regualation : 600μ
A(Max).
LINE UP
Type No.
KIA431ACP
KIA431BCP
KIA431ACF
KIA431BCF
KIA431ACM
KIA431BCM
SOT-23
Package
TO-92
SOT-89
Marking
-
-
3E
3F
4AC
4BC
PIN CONFIGURATION (SOT-23)
3
3
TOP
VIEW
1
2
2
1
1. Cathode 2. Ref 3. Anode
BLOCK DIAGRAM
Cathode (K)
Reference (R)
+
-
Cathode (K)
Reference (R)
2.5V
ref
Anode (A)
Anode (A)
2014. 9. 16
Revision No : 2
1/7
KIA431AC/BC Series
ORDERING INFORMATION
K IA 431
Pb-Free / Halogen-Free
Packing Specification
Package Type
I
min
Specification
V
ref
Tolerance
V
ref
Tolerance code
ITEM
Code
A
KIA431
B
Tolerance
±1.0%
±0.5%
Code
C
I
min
Code
Spec.
0.6mA(Max)
Package Code
Code
P
F
M
Package
TO-92
SOT-89
SOT-23
Pb-Free / Halogen-Free
P
H
Pb-Free
Halogen-Free
TO-92
Packing Specification
SOT-89
SOT-23
AT : Taping of AMMO PACK type
RTF : RTF type
RTK : RTK type
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
KIA431P
Total Power Dissipation
KIA431F
KIA431M
(Note1)
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
mW
UNIT
V
mA
mA
℃
℃
℃
Note1) Package mounted on 99.5% Alumina 10×8×0.6mm
2014. 9. 16
Revision No : 2
2/7
KIA431AC/BC Series
ELECTRICAL CHARACTERISTICS
(Ta=25℃)
CHARACTERISTICS
Reference Input
Voltage
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
300
2.6
0.22
6.5
2.5
600
1000
-
μ
A
μ
A
nA
Ω
KIA431A
V
ref
KIA431B
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
2.4825
-
-
-
2.495
7.0
-1.4
-1.0
2.5075
30
-2.7
mV/V
-2.0
V
mV
SYMBOL
TEST
CIRCUIT
TEST CONDITION
MIN.
2.470
TYP.
2.495
MAX.
2.520
UNIT
V
2014. 9. 16
Revision No : 2
3/7
KIA431AC/BC 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.
2014. 9. 16
Revision No : 2
4/7
KIA431AC/BC 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)
CATHODE VOLTAGE V
KA
(V)
V
ref
- V
KA
DYNAMIC IMPEDANCE Zka (Ω)
CHANGE IN REFERENCE INPUT
VOLTAGE V (mV)
ref
0
I
K
=10mA
Ta=25 C
Zka
100
I
K
=1.0mA~100mA
Ta=25 C
- f
-8.0
10
-16
1.0
-24
-32
0
10
20
30
40
0.1
1.0k
10k
100k
1.0M
10M
CATHODE VOLTAGE V
KA
(V)
OPEN LOOP VOLTAGE GAIN G
VO
(dB)
FREQUENCY f (Hz)
G
VO
- f
60
50
40
30
20
10
0
-10
1.0k
10k
100k
1.0M
10M
0
4.0
I
K
=10mA
Ta=25 C
PULSE RESPONSE
Ta=25 C
3.0
VOLTAGE SWING (V)
OUTPUT
2.0
1.0
0
5.0
0
8.0
12
16
20
INPUT
TIME t (µs)
FREQUENCY f (Hz)
P
D
- Ta
1000
900
ALLOWABLE POWER
DISSIPATION P
D
(mW)
800
700
600
500
400
300
200
100
0
0
25
50
75
100
125
150
175
KIA431M
KIA431P
KIA431F
AMBIENT TEMPERATURE Ta ( C)
2014. 9. 16
Revision No : 2
5/7
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