KEC KIA431

SEMICONDUCTOR
KIA431 Series
TECHNICAL DATA
BIPOLAR LINEAR INTEGRATED CIRCUIT
PROGRAMMABLE PRECISION REFERENCES
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 Vref
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 + Vref Code + Package Code+Pin Configuration Code
Vref Code
ITEM
KIA431
Code
Blank
A
B
Tolerance (%)
±2.2
±1.0
±0.5
Package Code
Code
Blank
F
S
T
Package
TO-92
SOT-89
TSM
TSV
M
SOT-23
Pin Configuration Code (SOT-23 Only)
Code
Blank
2
Type
A
B
・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.
PIN CONFIGURATION (SOT-23)
LINE UP
Type No.
Operating Voltage(V)
Package
Marking
3
KIA431
KIA431A
TO-92
3
TOP
VIEW
KIA431B
KIA431F
3A
KIA431AF
SOT-89
KIA431BF
3C
KIA431T
43C
KIA431AT
KIA431BT
KIA431S
TSV
KIA431AS
43A
43B
2.5~36
1
3B
2
2
1
A-Type : 1. Cathode 2. Ref 3. Anode
B-Type : 1. Ref 2. Cathode 3. Anode
43C
TSM
KIA431BS
43A
43B
KIA431M
SOT-23
(A-Type)
KIA431AM
KIA431BM
KIA431M2
43C
43A
43B
43F
SOT-23
(B-Type)
KIA431AM2
KIA431BM2
43D
43E
* KIA431BT
(Tolerance : 0.5% , TSV package) : Under Development
2012. 3. 20
Revision No : 16
1/8
KIA431 Series
BLOCK DIAGRAM
Cathode (K)
+
Reference (R)
Cathode (K)
Reference (R)
2.5Vref
Anode (A)
Anode (A)
ORDERING INFORMATION
KIA431
Pb-Free / Halogen-Free
Packing Specification
Pin configuration (SOT-23 Only)
Package code
Vref Tolerance code
Vref Tolerance code
Package Code
Pin Configuration (SOT-23 Only)
Pb-Free / Halogen-Free
Blank
±2.2%
Blank
TO-92
Blank
A-Type
P
Pb-Free
A
±1.0%
F
SOT-89
2
B-Type
H
Halogen-Free
B
±0.5%
S
TSM
T
TSV
M
SOT-23
TO-92
AT : Taping of AMMO PACK type
SOT-89
RTF : RTF type
TSM / SOT-23
RTK : RTK type
TSV
RTK : RTK type
Packing Specification
2012. 3. 20
Revision No : 16
2/8
KIA431 Series
MAXIMUM RATINGS (Ta=25℃)
(Full operating ambient temperature range applies unless otherwise noted.)
CHARACTERISTIC
SYMBOL
RATING
UNIT
VKA
37
V
Cathode Current Range, Continuous
IK
-100～150
mA
Reference Input Current Range, Continuous
Iref
-0.05～10
mA
Operating Junction Temperature
Tj
150
℃
Operating Temperature
Topr
-40～85
℃
Storage Temperature
Tstg
-65～150
℃
Cathode To Anode Voltage
Total Power Dissipation
KIA431
700
KIA431F
800
KIA431M
(Note1)
KIA431S
(Note2)
PD
350
mW
900
KIA431T
550
Note1) Package mounted on 99.5% Alumina 10×8×0.6mm
Note2) Package mounted on a ceramic board. (600㎣×0.8㎜ )
ELECTRICAL CHARACTERISTICS (Ta=25℃)
CHARACTERISTICS
SYMBOL
TEST
CIRCUIT
TEST CONDITION
KIA431
Reference Input
Voltage
KIA431A
Vref
Figure 1
VKA=Vref , IK=10mA
KIA431B
Reference Input Voltage
Deviation Over Temperature Range
Ratio of Change in Reference Input
Voltage to Change in Cathode to
ΔVref
(Note 1)
VKA=Vref , IK=10mA
ΔVKA=
ΔVref/
ΔVKA
Anode Voltage
Figure 1
Figure 2
IK=10mA
10V～Vref
ΔVKA=
36V～10V
Ta=25℃
MIN.
TYP.
MAX.
UNIT
2.440
2.495
2.550
V
2.470
2.495
2.520
V
2.4825
2.495
2.5075
V
-
7.0
30
mV
-
-1.4
-2.7
mV/V
-
-1.0
-2.0
-
1.8
4.0
-
-
6.5
Iref
Figure 2
ΔIref
Figure 2
IK=10mA, R1=10kΩ, R2=∞
-
0.8
2.5
μA
Minimum Cathode Current For Regulation
Imin
Figure 1
VKA=Vref
-
0.5
1.0
mA
Off-State Cathode Current
Ioff
Figure 3
VKA=36V, Vref=0V
-
2.6
1000
nA
Dynamic Impedance
Zka
Figure 1
VKA=Vref, IK=1.0～100mA,
(Note 2)
f≦1.0kHz
-
0.22
-
Ω
Reference Input Current
Ta=Topr
Reference Input Current
Deviation Over Temperature Range
2012. 3. 20
Revision No : 16
IK=10mA, R1=10kΩ, R2=∞
μA
3/8
KIA431 Series
FIGURE 3-TEST CIRCUIT FOR I off
FIGURE 1-TEST CIRCUIT FOR VKA = Vref
VKA
Input
VKA
Input
IK
I off
Vref
Example : ΔVref = 8.0mV and slope is positive,
FIGURE 2-TEST CIRCUIT FOR VKA > Vref
Vref at 25℃=2.495V, ΔTa=70℃
Input
VKA
αVref =
IK
R1
Iref
VKA = Vref ( 1+
R1
) + Iref
R2
R1
R2
70×(2.495)
= 45.8 ppm/℃
Note 2: The dynamic impedance Zka is defined as:
|Zka| =
Vref
0.008×106
ΔVKA
ΔIk
When the device is programmed with two external
Note 1:
resistors, R1 and R2, (refer to Figure 2) the total
The deviation parameter ΔVref is defined as the differences
dynamic impedance of the circuit is defined as:
between the maximum and minimum values obtained over the
full operating ambient temperature range that applies.
|Zka'| = |Zka| (1+
R1
R2
)
Vref = Vref (Max.)
Vref Max.
- Vref (Min.)
Ta = T2 - T1
Vref Min.
T1
T2
AMBIENT TEMPERATURE
The average temperature coefficient of the Reference
input voltage, ΔVref , is defined as:
αVref (
ppm
℃
(
)=
=
ΔVref
Vref at 25℃
) × 106
ΔTa
ΔVref × 106
ΔTa(Vref at 25℃)
αVref can be positive or negative depending on whether
Vref Min. or Vref Max. occurs at the lower ambient temperature.
2012. 3. 20
Revision No : 16
4/8
KIA431 Series
I K - VKA
800
VKA =V ref
Ta=25 C
CATHODE CURRENT I K (µA)
CATHODE CURRENT IK (mA)
I K - VKA
150
100
50
0
-50
-1.0
0
1.0
2.0
600
400
200
0
-200
-1.0
-100
-2.0
V KA =V ref
Ta=25 C
3.0
CATHODE VOLTAGE VKA (V)
0
1.0
2.0
CATHODE VOLTAGE VKA (V)
DYNAMIC IMPEDANCE Zka (Ω)
Zka
CHANGE IN REFERENCE INPUT
VOLTAGE Vref (mV)
Vref - VKA
0
IK =10mA
Ta=25 C
-8.0
-16
-24
100
10
1.0
0.1
10k
-32
10
20
30
- f
I K=1.0mA~100mA
Ta=25 C
1.0k
0
100k
1.0M
PULSE RESPONSE
Ta=25 C
GVO - f
VOLTAGE SWING (V)
OPEN LOOP VOLTAGE GAIN GVO (dB)
3.0
I K=10mA
Ta=25 C
50
10M
FREQUENCY f (Hz)
40
CATHODE VOLTAGE VKA (V)
60
3.0
40
30
20
OUTPUT
2.0
1.0
0
5.0
INPUT
0
10
0
4.0
8.0
0
12
16
20
TIME t (µs)
-10
1.0k
10k
100k
1.0M
PD - Ta
10M
1000
900
ALLOWABLE POWER
DISSIPATION PD (mW)
FREQUENCY f (Hz)
KIA431S
800
KIA431F
700
600
500
KIA431
KIA431T
400
300
200
100
KIA431M
0
0
25
50
75
100
125
150
175
AMBIENT TEMPERATURE Ta ( C)
2012. 3. 20
Revision No : 16
5/8
KIA431 Series
C
B
A
C
H
J
B
E
A
G
N
DIM
A
B
C
D
E
F
G
H
J
K
L
M
N
E
K
G
J
D
H
F
F
C
3
2
M
L
1
MILLIMETERS
4.70 MAX
4.80 MAX
3.70 MAX
0.45
1.00
1.27
0.85
0.45
_ 0.50
14.00 +
0.55 MAX
2.30
0.45 MAX
1.00
DIM
A
B
C
D
E
F
G
H
J
K
D
D
K
F
1
F
2
3
MILLIMETERS
4.70 MAX
_ 0.20
2.50 +
1.70 MAX
0.45+0.15/-0.10
4.25 MAX
_ 0.10
1.50 +
0.40 TYP
1.75 MAX
0.75 MIN
0.5+0.10/-0.05
1. REFERENCE
2. ANODE
1. REFERENCE
3. CATHODE
2. ANODE
Heat Sink is common to 2 (ANODE)
3. CATHODE
TO-92
SOT-89
E
E
K
B
L
H
I
J
K
L
0.00-0.10
0.25+0.25/-0.15
0.60
0.55
B
1.6+0.2/-0.1
_ 0.05
0.70 +
G
2
G
F
D
E
F
G
4
3
J
J
_ 0.1
0.4 +
2.8+0.2/-0.3
_ 0.2
1.9 +
0.95
_ 0.05
0.16 +
0.00-0.10
0.25+0.25/-0.15
0.60
0.55
H
I
J
1. Cathode 2. Ref 3. Anode
1.
2.
3.
4.
5.
N.C
N.C
CATHODE
REFERENCE
ANODE
1
5
2
3
4
1
TSM
2012. 3. 20
MILLIMETERS
_ 0.2
2.9 +
H
I
J
K
L
H
3
2
A
2.8+0.2/-0.3
_ 0.2
1.9 +
0.95
_ 0.05
0.16 +
DIM
A
C
D
G
1
D
E
F
G
5
1
L
D
G
3
F
A
C
C
2
MILLIMETERS
_ 0.2
2.9 +
1.6+0.2/-0.1
_ 0.05
0.70 +
_ 0.1
0.4 +
C
DIM
A
B
J
K
K
I
K
B
Revision No : 16
TSV
6/8
KIA431 Series
E
B
L
D
L
3
H
G
A
2
1
P
K
J
C
N
P
DIM
A
B
C
D
E
G
H
J
K
L
M
N
P
MILLIMETERS
_ 0.20
2.93 +
1.30+0.20/-0.15
1.30 MAX
0.40+0.15/-0.05
2.40+0.30/-0.20
1.90
0.95
0.13+0.10/-0.05
0.00 ~ 0.10
0.55
0.20 MIN
1.00+0.20/-0.10
7
M
3
1. Cathode 2. Ref 3. Anode
2
1
SOT-23
2012. 3. 20
Revision No : 16
7/8
KIA431 Series
PRECAUTION FOR USE
Lead-Free Soldering Condition.
Elements mounting styles of electronic devices are gaining in further diversification over recent years, and needs for
components are all the more expanding in varieties. Especially, surface mounting is steadily penetrating into industrial
segments as a world-wide popular technical trend. Although exposure to high temperature is inevitable during soldering
we recommend limiting the soldering temperature to low levels as shown in figure for the sake of retaining inherent
excellent reliability.
_ 1sec
10 +
_3 C
Peak : 260 +
Temperature ( C)
250 C
230 C
180 C
150 C
_ 30sec
90 +
_ 5sec
35 +
Preheating Zone
Reflow Zone
Time (sec)
[Lead-Free Soldering Temperature Profile]
1. When employing solder reflow method
1) Soldering Condition
ⓐ Standard Condition : 250℃ (Temperature), 10±1sec. (Time)
ⓑ Peak Condition : 260±3℃
2) Recommend temperature profile
3) Precautions on heating method
When resin in kept exposed to high temperature for a long time, device reliability may be marred.
Therefore, it is essential to complete soldering in the shortest time possible to prevent temperature of resin from rising.
2. When employing halogen lamps or infrared-ray heaters
When halogen lamps or infrared-ray heaters are used, avoid direct irradiation onto resin surfaces; such devices
cause extensive localized temperature rise.
※ Please keep a reflow solder operating when Surface Mount Package’s Soldering.
2012. 3. 20
Revision No : 16
8/8