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LM334 Datasheet(PDF) 3 Page - STMicroelectronics

Part No. LM334
Description  THREE TERMINAL ADJUSTABLE CURRENT SOURCES
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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LM134 - LM234 - LM334
3/11
ELECTRICAL CHARACTERISTICS
Tj = +25°C with pulse testing so that junction temperature does not change during testing (unless
otherwise specified)
Parameter
LM134 - LM234
LM334
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Set Current Error (V+ = +2.5V) -1)
10µA
≤ I
SET ≤ 1mA
1mA
≤ I
SET ≤ 5mA
2µA
≤ I
SET ≤ 10µA
1. Set current is the current flowing into the V+ pin. It is determined by the following formula Iset = 67.7mV/Rset (Tj = +25°C)
Set current error is expressed as a percent deviation from this amount
3
5
8
6
8
12
%
Ratio of Set Current to V- Current
10µA
≤ I
SET ≤ 1mA
1mA
≤ I
SET ≤ 5mA
2µA
≤ I
SET ≤ 10µA
14
18
14
14
23
14
18
14
14
26
Minimum Operating Voltage
2µA
≤ I
SET ≤ 100µA
100µA
≤ I
SET ≤ 1mA
1mA
≤ I
SET ≤ 5mA
0.8
0.9
1
0.8
0.9
1
V
Average Change in Set Current with Input Voltage
2µA
≤ I
SET ≤ 1mA
+1.5V
≤ V
+ ≤ +5V
+5V
≤ V
+ ≤ +40V
1mA
≤ I
SET ≤ 5mA
+1.5V
≤ V
+ ≤ +5V
+5V
≤ V
+ ≤ +40V
0.02
0.01
0.03
0.02
0.05
0.03
0.02
0.01
0.03
0.02
0.1
0.05
% / V
Temperature Dependence of set current - 2)
25µA
≤ I
SET ≤ 1mA
2. 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)
0.96 T
T
1.04 T 0.96 T
T
1.04 T
Effective Shunt Capacitance
15
15
pF




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