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LM334 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM334
Description  3-Terminal Adjustable Current Sources
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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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 VForward Voltage
LM134/LM234/LM334
40V
LM234-3/LM234-6
30V
V
+ to VReverse 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 Tj = 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. ISET is determined
by the following formula: ISET = 67.7 mV/RSET (@ 25˚C). Set current error is expressed as a percent deviation from this amount. ISET increases at 0.336%/˚C @ Tj
= 25˚C (227 µV/˚C).
Note 4: ISET is directly proportional to absolute temperature (˚K). ISET at any temperature can be calculated from: ISET =Io (T/To) where Io is ISET measured at To
(˚K).
Note 5: For elevated temperature operation, TJ 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 1.5k
Ω resistor.
www.national.com
2




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