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 40V
LM234-3/LM234-6 30V
V
+
to V
−
Reverse Voltage 20V
R Pin to V
−
Voltage 5V
Set Current 10 mA
Power Dissipation 400 mW
ESD Susceptibility (Note 6) 2000V
Operating Temperature Range (Note
5)
LM134 −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 Conditions LM134/LM234 LM334 Units
Min Typ Max Min Typ Max
Set Current Error, V
+
=2.5V, 10µA ≤ I
SET
≤ 1mA 3 6 %
(Note 3) 1mA
<
I
SET
≤ 5mA 5 8 %
2µA ≤ I
SET
<
10µA 8 12 %
Ratio of Set Current to 100µA ≤ I
SET
≤ 1mA 14 18 23 14 18 26
Bias Current 1mA ≤ I
SET
≤ 5mA 14 14
2µA≤I
SET
≤100 µA 18 23 18 26
Minimum Operating Voltage 2µA ≤ I
SET
≤ 100µA 0.8 0.8 V
100µA
<
I
SET
≤ 1mA 0.9 0.9 V
1mA
<
I
SET
≤ 5mA 1.0 1.0 V
Average Change in Set Current 2µA ≤ I
SET
≤ 1mA
with Input Voltage 1.5 ≤ V
+
≤ 5V 0.02 0.05 0.02 0.1 %/V
5V ≤ V
+
≤ 40V 0.01 0.03 0.01 0.05 %/V
1mA
<
I
SET
≤ 5mA
1.5V ≤ V ≤ 5V 0.03 0.03 %/V
5V ≤ V ≤ 40V 0.02 0.02 %/V
Temperature Dependence of 25µA ≤ I
SET
≤ 1mA 0.96T T 1.04T 0.96T T 1.04T
Set Current (Note 4)
Effective Shunt Capacitance 15 15 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).
LM134/LM234/LM334
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