LM2940-N, LM2940C
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SNVS769I –MARCH 2000–REVISED APRIL 2013
Electrical Characteristics (continued)
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)
Parameter Conditions
5V
8V
Typ
LM2940-N
Limit(1)
LM2940-
N/883
Typ
LM2940-N
Limit(1)
LM2940-
N/883
Units
Limit(2)
Limit(2)
Reverse Polarity
Transient Input
Voltage
RO = 100Ω
LM2940-N, T ≤ 100 ms
LM2940-N/883, T ≤ 20 ms
LM2940C, T ≤ 1 ms
−75
−55
−50/−50
−45/−45
−75
−50/−50
VMIN
−45/−45
−45/−45
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)
9V
LM2940-N
10V
LM2940-N
Units
Parameter
Conditions
Typ
Limit
Typ
Limit
(1)
(1)
Output Voltage
10.5V ≤ VIN ≤ 26V
11.5V ≤ VIN ≤ 26V
5 mA ≤ IO ≤1A
9.00
8.73/8.55
9.27/9.45
90
10.00
9.70/9.50
10.30/10.50
100
VMIN
VMAX
Line Regulation
Load Regulation
VO + 2V ≤ VIN ≤ 26V,
IO = 5 mA
20
20
65
65
mVMAX
50 mA ≤ IO ≤ 1A
LM2940-N
60
60
90/150
100/165
mVMAX
LM2940C
90
Output Impedance
Quiescent Current
100 mADC and
20 mArms,
60
mΩ
fO = 120 Hz
VO +2V ≤ VIN < 26V,
IO = 5 mA
LM2940-N
10
10
15/20
15
10
15/20
45/60
mAMAX
LM2940C
VIN = VO + 5V, IO = 1A
10 Hz − 100 kHz,
IO = 5 mA
30
45/60
30
mAMAX
Output Noise Voltage
Ripple Rejection
270
300
μVrms
fO = 120 Hz, 1 Vrms
IO = 100 mA
LM2940-N
,
64
64
34
52/46
63
36
51/45
dBMIN
LM2940C
52
Long Term
Stability
mV/
1000 Hr
VMAX
Dropout Voltage
IO = 1A
0.5
110
1.9
0.8/1.0
150/200
1.6
0.5
110
1.9
0.8/1.0
150/200
1.6
IO = 100 mA
mVMAX
AMIN
(2)
Short Circuit Current
See
(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) Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature.
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