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SEMICONDUCTOR
TECHNICAL DATA
PROGRAMMABLE PRECISION REFERENCES The KIA431S/AS/BS 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 20 volts with two external resistors. These devices exhibit a wide operating current range of 1.0 to 100mA with a typical dynamic impedance of 0.22 . 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 KIA431S/AS/BS operates as a shunt regulator, it can be used as either a positive or negative voltage reference.
KIA431S/AS/BS
BIPOLAR LINEAR INTEGRATED CIRCUIT
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E K B
DIM A B
G
2 3 C D E F G H I J K L I H J
A
F
D
MILLIMETERS _ 0.2 2.9 + 1.6+0.2/-0.1 _ 0.05 0.70 + _ 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
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1
C
L
J
1. CATHODE 2. REFERENCE 3.ANODE
FEATURES
Programmable Output Voltage to 20 Volts. ITEM KIA431S KIA431AS * KIA431BS Note) * : Under development Low Dynamic Output Impedance : 0.22 (Typ.). Sink Current Capability of 1.0 to 100mA. Equivalent Full-Range Temperature Coefficient of 50ppm/ Temperature Compensated for Operation Over Full Rated Operating Temperature Range. Low Output Noise Voltage. (Typ.). Vref Tolerance (%) 2.2 1.0 0.5
TSM
Marking
Type No. KIA431S KIA431AS KIA431BS Marking 3A 3B 3C
2005. 10. 26
Revision No : 1
1/5
KIA431S/AS/BS
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MAXIMUM RATINGS (Ta=25
)
SYMBOL VKA IK Iref Tj Topr Tstg RATING 20 -100 150 -0.05 10 150 -40 85 -65 150 900 mW UNIT V mA mA
CHARACTERISTIC Cathode To Anode Voltage Cathode Current Range, Continuous Reference Input Current Range, Continuous Operating Junction Temperature Operating Temperature Storage Temperature Total Power Dissipation (Note) 0.8m)
PD
Note) Package mounted on a ceramic board. (600m2
BLOCK DIAGRAM
Reference (R) 2.5Vref
+ -
Cathode (K) Reference (R) Anode(A)
Cathode (K)
Anode(A)
ELECTRICAL CHARACTERISTICS (Ta=25 )
CHARACTERISTICS KIA431S 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 Ta=Topr KIA431AS KIA431BS Vref Figure 1 (Note 1) VKA=Vref , IK=10mA VKA= Vref/ VKA Figure 2 IK=10mA 10V VKA= 20V Reference Input Current Reference Input Current Deviation Over Temperature Range Minimum Cathode Current For Regulation Off-State Cathode Current Dynamic Impedance Iref Figure 2 10V Vref Vref Figure 1 VKA=Vref , IK=10mA SYMBOL TEST CIRCUIT TEST CONDITION MIN. 2.440 2.470 2.4825 IK=10mA, R1=10k , R2= IK=10mA, R1=10k , R2= VKA=Vref VKA=20V, Vref=0V VKA=Vref, IK=1.0 100mA, f 1.0kHz TYP. 2.495 2.495 2.495 7.0 -1.4 -1.0 1.8 0.8 0.5 2.6 0.22 MAX. 2.550 2.520 2.50.