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LM2940C Scheda tecnica(PDF) 6 Page - Texas Instruments

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Il numero della parte LM2940C
Spiegazioni elettronici  1A Low Dropout Regulator
PDF  37 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM2940C Scheda tecnica(HTML) 6 Page - Texas Instruments

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LM2940-N, LM2940C
SNVS769J – MARCH 2000 – REVISED DECEMBER 2014
www.ti.com
Electrical Characteristics (5 V and 8 V) (continued)
Unless otherwise specified: VIN = VOUT + 5 V, IOUT = 1 A and COUT = 22 µF. MIN (minimum) and MAX (maximum) limits apply
over the recommended operating temperature range, unless otherwise noted; typical limits apply for TA = TJ = 25°C.
5 V
8 V
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Short-circuit
See(1), TJ = 25°C
1.6
1.9
1.6
1.9
A
current
ROUT = 100Ω, T ≤ 100 ms
LM2940-N
60
75
60
75
Maximum line
V
ROUT = 100Ω, T ≤ 1 ms
transient
LM2940C
45
55
45
555
TJ = 25°C
ROUT = 100 Ω
LM2940-N
–15
–30
–15
–30
Reverse polarity
V
ROUT = 100 Ω
DC input voltage
LM2940C
–15
–30
–15
–30
TJ = 25°C
Reverse polarity
ROUT = 100 Ω, T ≤ 100 ms
LM2940-N
–50
–75
–50
–75
Transient Input
V
ROUT = 100 Ω, T ≤ 1 ms
LM2940C
–45
–55
Voltage
(1)
Output current will decrease with increasing temperature but will not drop below 1 A at the maximum specified temperature.
6.6 Electrical Characteristics (9 V and 10 V)
Unless otherwise specified: VIN = VOUT + 5 V, IOUT = 1 A and COUT = 22 µF. MIN (minimum) and MAX (maximum) limits apply
over the recommended operating temperature range, unless otherwise noted; typical limits apply for TA = TJ = 25°C.
9 V
10 V
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Input voltage
5 mA
≤ IOUT ≤ 1 A
10.5
26
11.5
26
5 mA
≤ IOUT ≤ 1A
8.55
9
9.45
9.5
10
10.5
V
Output voltage
5 mA
≤ IOUT ≤ 1A, TJ = 25°C
8.73
9
9.27
9.7
10
10.3
VOUT + 2 V ≤ VIN ≤ 26 V, IOUT = 5 mA
Line regulation
20
90
20
100
mV
TJ = 25°C
50 mA
≤ IOUT ≤ 1 A
LM2940-N
60
150
65
165
Load regulation
50 mA
≤ IOUT ≤ 1 A
LM2940-N
60
90
65
100
mV
TJ = 25°C
LM2940C
60
90
Output
100 mADC, 20 mArms, ƒOUT = 120 Hz
60
65
m
Ω
impedance
VOUT + 2 V ≤ VIN ≤ 26 V,
LM2940-N
10
20
10
20
IOUT = 5 mA
VOUT + 2 V ≤ VIN ≤ 26 V,
LM2940-N
10
15
15
IOUT = 5 mA
Quiescent current
LM2940C
10
15
mA
TJ = 25°C
VIN = VOUT + 5 V, IOUT = 1 A
30
60
30
60
VIN = VOUT + 5 V, IOUT = 1 A
30
45
30
45
TJ = 25°C
Output noise
10 Hz to 100 kHz, IOUT = 5 mA
270
300
µVrms
voltage
ƒOUT = 120 Hz, 1 Vrms
LM2940-N
46
64
45
63
IOUT = 100 mA
Ripple rejection
dB
ƒOUT = 120 Hz, 1 Vrms
LM2940-N
52
64
51
63
IOUT = 100 mA
LM2940C
52
64
TJ = 25°C
Long-term
mV/1000
34
36
stability
Hr
IOUT = 1A
0.5
1
0.5
1
V
IOUT = 1A, TJ = 25°C
0.5
0.8
0.5
0.8
Dropout voltage
IOUT = 100 mA
110
200
110
200
mV
IOUT = 100 mA, TJ = 25°C
110
150
110
150
6
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Product Folder Links: LM2940-N LM2940C



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