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LM2940IMPX-10 Scheda tecnica(PDF) 4 Page - Texas Instruments

Il numero della parte LM2940IMPX-10
Spiegazioni elettronici  LM2940-N/LM2940C 1A Low Dropout Regulator
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM2940-N, LM2940C
SNVS769I – MARCH 2000 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics
VIN = VO + 5V, IO = 1A, CO = 22 μF, unless otherwise specified. Boldface limits apply over the entire operating
temperature range of the indicated device. All other specifications apply for TA = TJ = 25°C.
Output Voltage (VO)
5V
8V
Parameter
Conditions
Typ
LM2940-N
LM2940-
Typ
LM2940-N
LM2940-
Units
Limit(1)
N/883
Limit(1)
N/883
Limit(2)
Limit(2)
Output Voltage
5 mA
≤ IO ≤ 1A
6.25V
≤ VIN ≤ 26V
9.4V
≤ VIN ≤ 26V
5.00
4.85/4.75
4.85/4.75
8.00
7.76/7.60
7.76/7.60
VMIN
5.15/5.25
5.15/5.25
8.24/8.40
8.24/8.40
VMAX
Line Regulation
VO + 2V ≤ VIN ≤ 26V,
20
50
40/50
20
80
50/80
mVMAX
IO = 5 mA
Load Regulation
50 mA
≤ IO ≤ 1A
LM2940-N, LM2940-N/883
35
50/80
50/100
55
80/130
80/130
mVMAX
LM2940C
35
50
55
80
Output Impedance
100 mADC and
20 mArms,
35
1000/1000
55
1000/1000
m
Ω
fO = 120 Hz
Quiescent Current
VO +2V ≤ VIN ≤ 26V,
IO = 5 mA
LM2940-N, LM2940-N/883
10
15/20
15/20
10
15/20
15/20
mAMAX
LM2940C
10
15
VIN = VO + 5V,
30
45/60
50/60
30
45/60
50/60
mAMAX
IO = 1A
Output Noise Voltage 10 Hz
− 100 kHz,
150
700/700
240
1000/1000
μVrms
IO = 5 mA
Ripple Rejection
fO = 120 Hz, 1 Vrms,
IO = 100 mA
LM2940-N
72
60/54
66
54/48
dBMIN
LM2940C
72
60
66
54
fO = 1 kHz, 1 Vrms,
60/50
54/48
dBMIN
IO = 5 mA
Long Term Stability
20
32
mV/
1000 Hr
Dropout Voltage
IO = 1A
0.5
0.8/1.0
0.7/1.0
0.5
0.8/1.0
0.7/1.0
VMAX
IO = 100 mA
110
150/200
150/200
110
150/200
150/200
mVMAX
Short Circuit
See (3)
1.9
1.6
1.5/1.3
1.9
1.6
1.6/1.3
AMIN
Current
Maximum Line
RO = 100Ω
Transient
LM2940-N, T
≤ 100 ms
75
60/60
75
60/60
VMIN
LM2940-N/883, T
≤ 20 ms
40/40
40/40
LM2940C, T
≤ 1 ms
55
45
55
45
Reverse Polarity
RO = 100Ω
DC Input Voltage
LM2940-N, LM2940-N/883
−30
−15/−15
−15/−15
−30
−15/−15
−15/−15
VMIN
LM2940C
−30
−15
−30
−15
(1)
All limits are specified at TA = TJ = 25°C only (standard typeface) or over the entire operating temperature range of the indicated device
(boldface type). All limits at TA = TJ = 25°C are 100% production tested. All limits at temperature extremes are specified via correlation
using standard Statistical Quality Control methods.
(2)
All limits are specified at TA = TJ = 25°C only (standard typeface) or over the entire operating temperature range of the indicated device
(boldface type). All limits are 100% production tested and are used to calculate Outgoing Quality Levels.
(3)
Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature.
4
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Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2940-N LM2940C


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