SPX3431
ELECTRICAL CHARACTERISTICS are guaranteed over full junction temperature range (0°C to 105°C). Ambient
temperature must be derated based on power dissipation and package thermal characteristics. The conditions are: VKA = VREF and
IK = 10mA, unless otherwise specified.
Parameter
Symbol Test Condition
SPX3431A
SPX3431
Min Typ Max Min Typ Max Unit
Circuit
Reference Voltage
VREF TA = 25° C
2.490 2.503 2.515 2.475 2.500 2.525 V
1
Over Temp.
2.480
2.530 2.450
2.550 V
1
∆VREF with Temp*
Ratio of Change in VREF
to Cathode Voltage
Reference Input Current
IREF Temp Deviation
Min IK for Regulation
Off State Leakage
Dynamic Output
Impedance
TC
∆VREF
∆VK
IREF
∆IREF
IK (MIN)
IK (OFF)
ZKA
VREF to 10 V
10 V 10 18 V
VREF = 0V
VKA = 18V
f < 1 kHz IK =
1 to 100mA
0.07 0.20
0.07 0.02 mV/°C
1
-2.7 -1.01
-2.7 -1.01
-2 -0.4 0.3
-2
-0.4 0.3 MV/V
2
0.7
4
0.7
4
µA
2
0.4 1.2
0.4 1.2
µA
2
0.4
1
0.4
1
mA
1
0.04 500
0.04 500
nA
3
0.15 0.5
0.15 0.5
Ω
1
Calculating Average Temperature Coefficient (TC)
000
2000 0.2 -5
∆VREF
∆Τ
-10
0 15 30 45 60 75 90 105
Temperature (°C)
0.019 mV/°C
0.001 %/°C
7.6 ppm/°C
TC in mV/°C = ∆VREF (mV)
∆TA
TC in %/°C =
) ∆VREF
VREF at 25°C
∆TA
x 100
TC in ppm/°C =
) ∆VREF
VREF at 25°C
∆TA
x 106
Rev. 10/25/00