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參數(shù)資料
| 型號： | 2576 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 5-Amp Adjustable Regulators |
| 中文描述： | 5安培可調(diào)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 396K |
| 代理商： | 2576 |
Electrical Characteristics
(Continued)
Symbol
Parameter
Conditions
LM338
Typ
1
3.5
Units
Min
Max
V
R/T
I
LOAD
(Min)
I
CL
Temperature Stability
Minimum Load Current
Current Limit
T
MIN
≤
T
J
≤
T
MAX
V
IN
V
OUT
= 35V
V
IN
V
OUT
≤
10V
DC
0.5 ms Peak
V
IN
V
OUT
= 30V
10 Hz
≤
f
≤
10 kHz
V
OUT
= 10V, f = 120 Hz, C
ADJ
= 0 μF
V
OUT
= 10V, f = 120 Hz, C
ADJ
= 10 μF
T
J
= 125C, 1000 hrs
K Package
T Package
K Package
T Package
%
mA
10
5
7
8
12
A
A
A
%
dB
1
V
N
RMS Output Noise, % of V
OUT
Ripple Rejection Ratio
0.003
60
60
75
dB
Long-Term Stability
Thermal Resistance
Junction to Case
Thermal Resistance, Junction to
Ambient (No Heat Sink)
0.3
1
1
4
%
θ
JC
C/W
C/W
C/W
C/W
θ
JA
35
50
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
These specifications are applicable for power dissipations up to 50W for the TO-3 (K) package and 25W for the TO-220 (T) package. Power dissipation is
guaranteed at these values up to 15V input-output differential. Above 15V differential, power dissipation will be limited by internal protection circuitry. All limits (i.e.,
the numbers in the Min. and Max. columns) are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 3:
Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are
covered under the specifications for thermal regulation.
Note 4:
Refer to RETS138K drawing for military specifications of LM138K.
Typical Performance Characteristics
Current Limit
DS009060-32
Current Limit
DS009060-33
Current Limit
DS009060-34
Load Regulation
DS009060-35
Dropout Voltage
DS009060-36
Adjustment
Current
DS009060-37
www.national.com
3
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