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LM2940SX-9.0 数据表(PDF) 5 Page - Texas Instruments

部件名 LM2940SX-9.0
功能描述  LM2940-N/LM2940C 1A Low Dropout Regulator
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2940SX-9.0 数据表(HTML) 5 Page - Texas Instruments

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LM2940-N, LM2940C
www.ti.com
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)
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)
Reverse Polarity
RO = 100Ω
Transient Input
LM2940-N, T
≤ 100 ms
−75
−50/−50
−75
−50/−50
VMIN
Voltage
LM2940-N/883, T
≤ 20 ms
−45/−45
−45/−45
LM2940C, T
≤ 1 ms
−55
−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
10V
LM2940-N
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
10.00
9.70/9.50
VMIN
9.27/9.45
10.30/10.50
VMAX
Line Regulation
VO + 2V ≤ VIN ≤ 26V,
20
90
20
100
mVMAX
IO = 5 mA
Load Regulation
50 mA
≤ IO ≤ 1A
LM2940-N
60
90/150
65
100/165
mVMAX
LM2940C
60
90
Output Impedance
100 mADC and
20 mArms,
60
65
m
Ω
fO = 120 Hz
Quiescent Current
VO +2V ≤ VIN < 26V,
IO = 5 mA
LM2940-N
10
15/20
10
15/20
mAMAX
LM2940C
10
15
VIN = VO + 5V, IO = 1A
30
45/60
30
45/60
mAMAX
Output Noise Voltage
10 Hz
− 100 kHz,
270
300
μVrms
IO = 5 mA
Ripple Rejection
fO = 120 Hz, 1 Vrms,
IO = 100 mA
LM2940-N
64
52/46
63
51/45
dBMIN
LM2940C
64
52
Long Term
34
36
mV/
Stability
1000 Hr
Dropout Voltage
IO = 1A
0.5
0.8/1.0
0.5
0.8/1.0
VMAX
IO = 100 mA
110
150/200
110
150/200
mVMAX
Short Circuit Current
See (2)
1.9
1.6
1.9
1.6
AMIN
(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.
Copyright © 2000–2013, Texas Instruments Incorporated
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Product Folder Links: LM2940-N LM2940C


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