LM134/LM234/LM334
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
+
to V
−
Forward Voltage
LM134/LM234/LM334
LM234-3/LM234-6
+
V to V
−
Reverse Voltage
R Pin to V
−
Voltage
Set Current
Power Dissipation
ESD Susceptibility (Note 6)
Operating Temperature Range (Note 5)
LM134
40V
30V
20V
5V
10 mA
400 mW
2000V
−55˚C to +125˚C
LM234/LM234-3/LM234-6
−25˚C to +100˚C
LM334
0˚C to +70˚C
Soldering Information
TO-92 Package (10 sec.)
260˚C
TO-46 Package (10 sec.)
300˚C
SO Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
See AN-450 “Surface Mounting Methods and Their Effect on
Product Reliability” (Appendix D) for other methods of sol-
dering surface mount devices.
Electrical Characteristics
(Note 2)
Parameter
Set Current Error, V =2.5V,
(Note 3)
Ratio of Set Current to
Bias Current
Minimum Operating Voltage
+
Conditions
Min
10µA
≤
I
SET
≤
1mA
1mA
<
I
SET
≤
5mA
2µA
≤
I
SET
<
10µA
100µA
≤
I
SET
≤
1mA
1mA
≤
I
SET
≤
5mA
2 µA≤I
SET
≤100
µA
2µA
≤
I
SET
≤
100µA
100µA
<
I
SET
≤
1mA
1mA
<
I
SET
≤
5mA
14
LM134/LM234
Typ
Max
3
5
8
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
0.96T
T
15
1.04T
0.96T
0.05
0.03
23
23
14
Min
LM334
Typ
Max
6
8
12
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
T
15
1.04T
0.1
0.05
26
26
Units
%
%
%
V
V
V
%/V
%/V
%/V
%/V
Average Change in Set Current
with Input Voltage
2µA
≤
I
SET
≤
1mA
1.5
≤
V
+
≤
5V
5V
≤
V
≤
40V
+
1mA
<
I
SET
≤
5mA
1.5V
≤
V
≤
5V
5V
≤
V
≤
40V
Temperature Dependence of
Set Current (Note 4)
Effective Shunt Capacitance
pF
Note 1:
.“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2:
Unless otherwise specified, tests are performed at T
j
= 25˚C with pulse testing so that junction temperature does not change during test
Note 3:
Set current is the current flowing into the V
+
pin. For the Basic 2-Terminal Current Source circuit shown on the first page of this data sheet. I
SET
is determined
by the following formula: I
SET
= 67.7 mV/R
SET
(
@
25˚C). Set current error is expressed as a percent deviation from this amount. I
SET
increases at 0.336%/˚C
@
T
j
= 25˚C (227 µV/˚C).
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:
25µA
≤
I
SET
≤
1mA
LM134
LM234
LM334
Thermal Resistance
θ
ja
(Junction to Ambient)
θ
jc
(Junction to Case)
150˚C
125˚C
100˚C
TO-92
180˚C/W (0.4" leads)
160˚C/W (0.125" leads)
N/A
32˚C/W
80˚C/W
TO-46
440˚C/W
SO-8
165˚C/W
Note 6:
Human body model, 100pF discharged through a 1.5kΩ resistor.
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