Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM234/LM234-3/LM234-6
LM334
−25˚C to +100˚C
0˚C to +70˚C
Soldering Information
TO-92 Package (10 sec.)
TO-46 Package (10 sec.)
SO Package
260˚C
300˚C
V+ to V− Forward Voltage
LM134/LM234/LM334
40V
Vapor Phase (60 sec.)
Infrared (15 sec.)
215˚C
220˚C
LM234-3/LM234-6
30V
20V
V+ to V− Reverse Voltage
R Pin to V− Voltage
Set Current
See AN-450 “Surface Mounting Methods and Their Effect on
Product Reliability” (Appendix D) for other methods of sol-
dering surface mount devices.
5V
10 mA
400 mW
2000V
Power Dissipation
ESD Susceptibility (Note 6)
Operating Temperature Range (Note 5)
LM134
−55˚C to +125˚C
Electrical Characteristics (Note 2)
Parameter
Conditions
LM134/LM234
Typ
LM334
Typ
Units
Min
Max
3
Min
Max
6
Set Current Error, V+=2.5V,
(Note 3)
10µA ≤ ISET ≤ 1mA
%
%
%
<
1mA ISET ≤ 5mA
5
8
<
2µA ≤ ISET 10µA
8
12
26
Ratio of Set Current to
Bias Current
100µA ≤ ISET ≤ 1mA
1mA ≤ ISET ≤ 5mA
2 µA≤ISET≤100 µA
2µA ≤ ISET ≤ 100µA
14
18
14
23
14
18
14
18
23
18
26
Minimum Operating Voltage
0.8
0.9
0.8
0.9
V
V
<
100µA ISET
≤
1mA
<
1mA ISET ≤ 5mA
2µA ≤ ISET ≤ 1mA
1.5 ≤ V+ ≤ 5V
1.0
1.0
V
Average Change in Set Current
with Input Voltage
0.02
0.01
0.05
0.03
0.02
0.01
0.1
%/V
%/V
5V ≤ V+ ≤ 40V
0.05
<
1mA ISET ≤ 5mA
1.5V ≤ V ≤ 5V
0.03
0.02
T
0.03
0.02
T
%/V
%/V
5V ≤ V ≤ 40V
Temperature Dependence of
Set Current (Note 4)
25µA ≤ ISET ≤ 1mA
0.96T
1.04T
0.96T
1.04T
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 = 25˚C with pulse testing so that junction temperature does not change during test
j
+
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
is determined
SET
@
@
T
by the following formula: I
= 25˚C (227 µV/˚C).
= 67.7 mV/R
(
25˚C). Set current error is expressed as a percent deviation from this amount. I
increases at 0.336%/˚C
SET
SET
SET
j
Note 4: I
is directly proportional to absolute temperature (˚K). I
at any temperature can be calculated from: I
= I (T/T ) where I is I
measured at T
SET
SET
SET
SET
o
o
o
o
(˚K).
Note 5: For elevated temperature operation, T max is:
J
LM134
LM234
LM334
150˚C
125˚C
100˚C
Thermal Resistance
TO-92
TO-46
SO-8
θja (Junction to Ambient)
180˚C/W (0.4" leads)
160˚C/W (0.125" leads)
N/A
440˚C/W
165˚C/W
θjc (Junction to Case)
32˚C/W
80˚C/W
Note 6: Human body model, 100pF discharged through a 1.5kΩ resistor.
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