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參數(shù)資料
| 型號： | LM325 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual Voltage Regulator |
| 中文描述： | 雙電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 222K |
| 代理商： | LM325 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
Forced V
O+
(Min) (Note 2)
Forced V
O
(Max) (Note 2)
Power Dissipation (Note 3)
±
30V
0.5V
+0.5V
P
MAX
Output Short-Circuit Duration (Note 4)
Continuous
Operating Conditions
Operating Free Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
0C to +70C
65C to +150C
300C
Electrical Characteristics
Parameter
Output Voltage
Input-Output Differential
Line Regulation
Conditions
Min
14.5
2.0
Typ
15
Max
15.5
Units
V
V
T
j
= 25C
V
IN
= 18V to 30V, I
L
= 20 mA,
T
j
= 25C
V
IN
= 18V to 30V, I
L
= 20 mA,
I
L
= 0 mA to 50 mA, V
IN
=
±
30V,
T =
j
25C
2.0
10
mV
Line Regulation Over Temperature Range
Load Regulation
V
O+
V
O
Load Regulation Over Temperature Range
V
O+
V
O
Output Voltage Balance
Output Voltage Over Temperature Range
20
20
mV
3.0
5.0
10
10
mV
mV
I
L
= 0 mA to 50 mA, V
IN
=
±
30V
4.0
7.0
20
20
mV
mV
mV
T
j
= 25C
P
≤
P
MAX
, 0
≤
I
O
≤
50 mA,
18V
≤
|V
IN
|
≤
30
±
300
14.27
15.73
V
Temperature Stability of V
O
Short Circuit Current Limit
Output Noise Voltage
Positive Standby Current
Negative Standby Current
Long Term Stability
Thermal Resistance Junction to
Case (Note 5)
LM325H
Junction to Ambient
Junction to Ambient
Junction to Ambient
LM325N
±
0.3
260
150
1.75
3.1
0.2
%
mA
μVrms
mA
mA
%/kHr
T
j
= 25C
T
j
= 25C, BW = 100 10 kHz
T
j
= 25C
T
j
= 25C
3.0
5.0
(Still Air)
(400 Lf/min Air Flow)
(Still Air)
20
215
82
C/W
C/W
C/W
90
C/W
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:
That voltage to which the output may be forced without damage to the device.
Note 3:
Unless otherwise specified these specifications apply for T
j
= 0C to +125C on LM325, V
IN
=
±
20V, I
L
= 0 mA, I
MAX
= 100 mA, P
MAX
= 2.0W for the H10
Package.
Note 4:
If the junction temperature exceeds 150C, the output short circuit duration is 60 seconds.
Note 5:
Without a heat sink, the thermal resistance junction to ambient of the H10 Package is about 155C/W. With a heat sink, the effective thermal resistance can
only approach the junction to case values specified, depending on the efficiency of the sink.
www.national.com
2
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