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LM-338K データシート(PDF) 3 Page - Linear Technology

部品番号 LM-338K
部品情報  5A Positive Adjustable Voltage Regulator
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LM-338K データシート(HTML) 3 Page - Linear Technology

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LT138A/LT338A
LM138/LM338
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
LT138A
LM138
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
∆VOUT
Temperature Stability
q
12
1
%
∆Temp
∆VOUT
Long-Term Stability
TA = 125°C, 1000 Hours
0.3
1
0.3
1
%
∆Time
en
RMS Output Noise (% of VOUT) 10Hz ≤ f ≤ 10kHz
0.001
0.003
%
θJC
Thermal Resistance
K Package
1
1
°C/W
Junction-to-Case
The q denotes specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. (Note 2)
LT338A
LM338
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
VREF
Reference Voltage
IOUT = 10mA
1.238
1.250
1.262
V
3V
≤ (VIN – VOUT) ≤ 35V,
q
1.225
1.250
1.270
1.19
1.24
1.29
V
10mA
≤ IOUT ≤ 5A, P ≤ 50W
∆VOUT
Line Regulation
3V
≤ (VIN – VOUT) ≤ 35V, (Note 3)
0.005
0.01
0.005
0.03
%/V
∆VIN
q
0.02
0.04
0.02
0.06
%/V
∆VOUT
Load Regulation
10mA
≤ IOUT ≤ 5A, (Note 3)
∆IOUT
VOUT ≤ 5V
5
15
5
25
mV
VOUT ≥ 5V
0.1
0.3
0.1
0.5
%
VOUT ≤ 5V
q
20
30
20
50
mV
VOUT ≥ 5V
q
0.3
0.6
0.3
1
%
Thermal Regulation
20ms Pulse
0.002
0.02
0.002
0.02
%/W
Ripple Rejection
VOUT = 10V, f = 120Hz
CADJ = 0µF
q
60
60
dB
CADJ = 10µF
q
60
75
60
75
dB
IADJ
Adjust Pin Current
q
45
100
45
100
µA
∆IADJ
Adjust Pin Current Change
10mA
≤ IOUT ≤ 5A,
q
0.2
5
0.2
5
µA
3V
≤ (VIN – VOUT) ≤ 35V
Minimum Load Current
(VIN – VOUT) = 35V
q
3.5
10
3.5
10
mA
ISC
Current Limit
(VIN – VOUT) ≤ 10V
DC
q
58
58
A
0.5ms Peak
q
612
6
12
A
(VIN – VOUT) = 30V, TJ = 25°C1
2
1
A
∆VOUT
Temperature Stability
q
12
1
%
∆Temp
∆VOUT
Long-Term Stability
TA = 125°C, 1000 Hours
0.3
1
0.3
1
%
∆Time
en
RMS Output Noise (% of VOUT)
10Hz
≤ f ≤ 10kHz
0.001
0.003
%
θJC
Thermal Resistance
K Package
1
1
°C/W
Junction-to-Case
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Unless otherwise specified, these specifications apply:
VIN – VOUT = 5V and IOUT = 2.5A. These specifications are applicable for
power dissipations up to 50W.
Note 3: See thermal regulation specifications for changes in output voltage
due to heating effects. Load and line regulation are measured at a constant
junction temperature by low duty cycle pulse testing.


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