Electrical Characteristics (Continued)
VIN = VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera-
ture range of the indicated device. All other specifications apply for TA = TJ = 25˚C.
Output Voltage (VO)
5V
LM2940
8V
LM2940
LM2940/883
Limit
LM2940/883
Limit
Units
Parameter Conditions
Typ
Limit
Typ
Limit
(Note 4)
(Note 5)
(Note 4)
(Note 5)
Maximum Line
Transient
RO = 100Ω
LM2940, T ≤ 100 ms
LM2940/883, T ≤ 20 ms
LM2940C, T ≤ 1 ms
RO = 100Ω
75
55
60/60
75
55
60/60
VMIN
40/40
40/40
45
45
Reverse Polarity
DC Input Voltage
LM2940, LM2940/883
LM2940C
−30
−30
−15/−15
−15/−15
−30
−30
−15/−15
−15/−15
VMIN
−15
−15
Reverse Polarity
Transient Input
Voltage
RO = 100Ω
LM2940, T ≤ 100 ms
LM2940/883, 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 tempera-
ture range of the indicated device. All other specifications apply for TA = TJ = 25˚C.
Output Voltage (VO)
Conditions
9V
10V
LM2940
Limit
LM2940
Limit
Units
Parameter
Typ
Typ
(Note 4)
(Note 4)
10.5V ≤ VIN ≤ 26V
11.5V ≤ VIN ≤ 26V
Output Voltage
Line Regulation
Load Regulation
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
VO + 2V ≤ VIN ≤ 26V,
IO = 5 mA
20
20
65
65
mVMAX
50 mA ≤ IO ≤ 1A
LM2940
60
60
90/150
100/165
mVMAX
LM2940C
90
Output Impedance
100 mADC and
20 mArms,
60
mΩ
fO = 120 Hz
<
Quiescent
Current
VO +2V ≤ VIN 26V,
IO = 5 mA
LM2940
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
µVrms
Output Noise
Voltage
270
300
Ripple Rejection
fO = 120 Hz, 1 Vrms
IO = 100 mA
LM2940
,
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
0.8/1.0
0.5
0.8/1.0
IO = 100 mA
110
150/200
110
150/200
mVMAX
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