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LM134_03 Datasheet

  • LM134_03

  • STMicroelectronics [THREE TERMINAL ADJUSTABLE CURRENT SOURC...

  • STMICROELECTRONICS   STMICROELECTRONICS

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LM134
LM234 - LM334
THREE TERMINAL ADJUSTABLE CURRENT SOURCES
s
s
s
s
OPERATES FROM 1V TO 40V
0.02%/V CURRENT REGULATION
PROGRAMMABLE FROM 1碌A(chǔ) TO 10mA
鹵3% INITIAL ACCURACY
Z
TO92
(Plastic Package)
DESCRIPTION
The LM134/LM234/LM334 are 3-terminal adjust-
able current sources characterized by:
u
an operating current range of 10000: 1
u
an excellent current regulation
u
a wide dynamic voltage range of 1V t 10V
The current is determined by an external resistor
without requiring other external components.
Reverse voltages of up to 20V will only draw a cur-
rent of several microamperes. This enables the
circuit to operate as a rectifier and as a source of
current in a.c. applications.
For the LM134/LM234/LM334, the voltage on the
control pin is 64mV at +25擄C and is directly pro-
portional to the absolute temperature (擄K). The
simplest external resistor connection generates a
current with
鈮?/div>
0.33%/擄C temperature dependence.
Zero drift can be obtained by adding an additional
resistor and a diode to the external circuit.
PIN CONNECTIONS
(top view)
TO92
(Top view)
D
SO8
(Plastic Micropackage)
ORDER CODE
Part Number
LM134
LM234
LM334
Temperature
Range
-55擄C, +125擄C
-25擄C, +100擄C
0擄C, +70擄C
Package
Z
鈥?/div>
鈥?/div>
鈥?/div>
D
鈥?/div>
鈥?/div>
鈥?/div>
Z =
TO92 Plastic package - also available in Bulk (Z), Tape & Reel (ZT)
and Ammo Pack (AP)
D =
Small Outline Package (SO) - also available in Tape & Reel (DT)
SO8
(Top view)
NC
8
NC
7
V-
6
NC
5
v+
2
ADJ
1
v-
3
1
ADJ
2
NC
3
NC
4
V+
May 2003
1/11

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