參數(shù)資料
型號： LM234Z-3
廠商： National Semiconductor Corporation
英文描述： 3-Terminal Adjustable Current Sources
中文描述： 三端可調電流源
文件頁數(shù)： 2/14頁
文件大小： 273K
代理商： LM234Z-3
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
LM234-3/LM234-6
V
+
to V
Reverse Voltage
R Pin to V
Voltage
Set Current
Power Dissipation
ESD Susceptibility (Note 6)
Operating Temperature Range (Note 5)
LM134
40V
30V
20V
5V
10 mA
400 mW
2000V
55C to +125C
LM234/LM234-3/LM234-6
LM334
Soldering Information
TO-92 Package (10 sec.)
TO-46 Package (10 sec.)
SO Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
See AN-450 “Surface Mounting Methods and Their Effect on
Product Reliability” (Appendix D) for other methods of sol-
dering surface mount devices.
25C to +100C
0C to +70C
260C
300C
215C
220C
Electrical Characteristics
(Note 2)
Parameter
Conditions
LM134/LM234
Typ
LM334
Typ
Units
Min
Max
3
5
8
23
Min
Max
6
8
12
26
Set Current Error, V
+
=2.5V,
(Note 3)
10μA
≤
I
SET
≤
1mA
1mA
<
I
SET
≤
5mA
2μA
≤
I
SET
<
10μA
100μA
≤
I
SET
≤
1mA
1mA
≤
I
SET
≤
5mA
2 μA
≤
I
SET
≤
100 μA
2μA
≤
I
SET
≤
100μA
100μA
<
I
SET
≤
1mA
1mA
<
I
SET
≤
5mA
2μA
≤
I
SET
≤
1mA
1.5
≤
V
+
≤
5V
5V
≤
V
+
≤
40V
1mA
<
I
SET
≤
5mA
1.5V
≤
V
≤
5V
5V
≤
V
≤
40V
25μA
≤
I
SET
≤
1mA
%
%
%
Ratio of Set Current to
Bias Current
14
18
14
18
0.8
0.9
14
18
14
18
0.8
0.9
23
26
Minimum Operating Voltage
V
V
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
0.05
%/V
%/V
0.03
0.02
T
0.03
0.02
T
%/V
%/V
Temperature Dependence of
Set Current (Note 4)
Effective Shunt Capacitance
0.96T
1.04T
0.96T
1.04T
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
= 25C 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
(
@
25C). Set current error is expressed as a percent deviation from this amount. I
SET
increases at 0.336%/C
@
T
j
= 25C (227 μV/C).
Note 4:
I
SET
is directly proportional to absolute temperature (K). I
SET
at any temperature can be calculated from: I
SET
= I
o
(T/T
o
) where I
o
is I
SET
measured at T
o
(K).
Note 5:
For elevated temperature operation, T
J
max is:
LM134
LM234
LM334
150C
125C
100C
Thermal Resistance
θ
ja
(Junction to Ambient)
TO-92
TO-46
440C/W
SO-8
165C/W
180C/W (0.4" leads)
160C/W (0.125" leads)
N/A
θ
jc
(Junction to Case)
32C/W
80C/W
Note 6:
Human body model, 100pF discharged through a 1.5k
resistor.
L
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相關代理商/技術參數(shù)
參數(shù)描述
LM234Z-3/NOPB 功能描述:基準電壓& 基準電流 3-TERM ADJ CURRENT SOURCE RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
LM234Z-3/NOPB 制造商:Texas Instruments 功能描述:Temperature Sensor IC
LM234Z-3/T4 制造商:Texas Instruments 功能描述:Current Source 3-Pin TO-92
LM234Z-6 制造商:National Semiconductor Corporation 功能描述:3-Terminal Adj Current Source National IC TO-92 Plastic
LM234Z-6/LFT7 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
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