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LM2940IMP-12 Fiches technique(PDF) 5 Page - Texas Instruments

No de pièce LM2940IMP-12
Description  1A Low Dropout Regulator
Download  37 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM2940IMP-12 Fiches technique(HTML) 5 Page - Texas Instruments

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LM2940-N, LM2940C
www.ti.com
SNVS769J – MARCH 2000 – REVISED DECEMBER 2014
6.4 Thermal Information
LM2940-N, LM2940C
LM2940-N
TO-220
DDPAK/TO-263
SOT-223
WSON
THERMAL METRIC(1)
UNIT
(NDE)
(KTT)
(DCY)
(NGN)
3 PINS
3 PINS
4 PINS
8 PINS
RθJA
Junction-to-ambient thermal resistance(2)
23.3
40.9
59.3
40.5
RθJC(top) Junction-to-case (top) thermal resistance
16.1
43.5
38.9
26.2
RθJB
Junction-to-board thermal resistance
4.8
23.5
8.1
17.0
°C/W
ψJT
Junction-to-top characterization parameter
2.7
10.3
1.7
0.2
ψJB
Junction-to-board characterization parameter
4.8
22.5
8.0
17.2
RθJC(bot) Junction-to-case (bottom) thermal resistance
1.1
0.8
n/a
3.2
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2)
Thermal information for the TO-220 package is for a package vertically mounted with a heat sink in the middle of a PCB which is
compliant to the JEDEC HIGH-K 2s2p (JESD51-7). The heatsink-to-ambient thermal resistance, RƟSA, is 21.7°C/W. See Heatsinking
TO-220 Package Parts for more information.
6.5 Electrical Characteristics (5 V and 8 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.
5 V
8 V
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Input voltage
5 mA
≤ IOUT ≤ 1 A
6.25
26
9.4
26
5 mA
≤ IOUT ≤ 1A
4.75
5
5.25
7.6
8
8.4
V
Output voltage
5 mA
≤ IOUT ≤ 1A, TJ = 25°C
4.85
5
5.15
7.76
8
8.24
VOUT + 2 V ≤ VIN ≤ 26 V, IOUT = 5 mA
Line regulation
20
50
20
80
mV
TJ = 25°C
50 mA
≤ IOUT ≤ 1 A
LM2940-N
35
80
55
130
Load regulation
LM2940-N
35
50
55
80
mV
50 mA
≤ IOUT ≤ 1 A
TJ = 25°C
LM2940C
35
50
55
80
Output
100 mADC, 20 mArms, ƒOUT = 120 Hz
35
55
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
10
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
150
240
µVrms
voltage
ƒOUT = 120 Hz, 1 Vrms, IOUT =
LM2940-N
54
72
48
66
100 mA
Ripple rejection
dB
ƒOUT = 120 Hz, 1 Vrms, IOUT =
LM2940-N
60
72
54
66
100 mA
LM2940C
60
72
54
66
TJ = 25°C
Long-term
mV/1000
20
32
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
Copyright © 2000–2014, Texas Instruments Incorporated
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Product Folder Links: LM2940-N LM2940C


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