User guide

Electrical Characteristics (Note 2) (Continued)
Note 4: I
SET
is directly proportional to absolute temperature (˚K). I
SET
at any temperature can be calculated from: I
SET
=I
o
(T/T
o
) where I
o
is I
SET
measured at T
o
(˚K).
Note 5: For elevated temperature operation, T
J
max is:
LM134 150˚C
LM234 125˚C
LM334 100˚C
Thermal Resistance TO-92 TO-46 SO-8
θ
ja
(Junction to
Ambient)
180˚C/W (0.4" leads) 440˚C/W 165˚C/W
160˚C/W (0.125"
leads)
θ
jc
(Junction to Case) N/A 32˚C/W 80˚C/W
Note 6: Human body model, 100pF discharged through a 1.5kΩ resistor.
Electrical Characteristics (Note 2)
Parameter Conditions LM234-3 LM234-6 Units
Min Typ Max Min Typ Max
Set Current Error, V
+
=2.5V, 100µA ≤ I
SET
≤ 1mA
±
1
±
2%
(Note 3) T
J
= 25˚
Equivalent Temperature Error
±
3
±
6˚C
Ratio of Set Current to 100µA ≤ I
SET
≤ 1mA 14 18 26 14 18 26
Bias Current
Minimum Operating Voltage 100µA I
SET
≤ 1mA 0.9 0.9 V
Average Change in Set Current 100µA ≤ I
SET
≤ 1mA
with Input Voltage 1.5 ≤ V
+
≤ 5V 0.02 0.05 0.02 0.01 %/V
5V ≤ V
+
≤ 30V 0.01 0.03 0.01 0.05 %/V
Temperature Dependence of 100µA ≤ I
SET
≤ 1mA 0.98T T 1.02T 0.97T T 1.03T
Set Current (Note 4) and
Equivalent Slope Error
±
2
±
3%
Effective Shunt Capacitance 15 15 pF
LM134/LM234/LM334
www.national.com3