LM2940L-05-TA3-T [UTC]
Regulator;
| 型号： | LM2940L-05-TA3-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | Regulator |
| 文件： | 总10页 (文件大小：225K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO.,
LM2940
LINEAR INTEGRATED CIRCUIT
1A LOW-DROPOUT VOLTAGE
REGULATOR
1
1
TO-263-3
TO-252
TO-220
ꢀ
DESCRIPTION
The UTC LM2940 is a positive voltage regulator features the
1
1
ability to source 1A of output current with a dropout voltage of
typically 0.5V and a maximum of 1V over the entire temperature
range. Furthermore, a quiescent current reduction circuit has
been included which reduces the ground current when the
differential between the input voltage and the output voltage
exceeds approximately 3V.The quiescent current with 1A of
output current and an input-output differential of 5V is therefore
only 30mA.Higher quiescent currents only exist when the
regulator is in the dropout mode (VIN-VOUT≤3V).
SOT-223
SOP-16
DIP-16
*Pb-free plating product number: LM2940L
Designed also for vehicular applications, the UTC LM2940 is
protected from reverse battery installations or 2-battery jumps.
During line transients, such as load dump when the input voltage
can momentarily exceed the specified maximum operating
voltage, the regulator will automatically shut down to protect both
the internal circuits and the load. The UTC LM2940 cannot be
harmed by temporary mirror-image insertion. Familiar regulator
features such as short circuit and thermal overload protection are
also provided.
ꢀPIN CONFIGURATION
PIN NO.
PIN NAME
VIN
1
2
3
GND
VOUT
ꢀ
FEATURES
*Dropout voltage typically 0.5V @Io=1A
*Output current in excess of 1A
*Output voltage trimmed before assembly
*Reverse battery protection
*Internal short circuit current limit
*Mirror image insertion protection
*P+ Product Enhancement tested.
ꢀ ORDERING INFORMATION
Order Number
Package
Packing
Normal
Lead free
LM2940-xx-TQ3-R LM2940L-xx-TQ3-R
LM2940-xx-TQ3-T LM2940L-xx-TQ3-T
LM2940-xx-TN3-R LM2940L-xx-TN3-R
TO-263-3
TO-263-3
TO-252
TO-252
SOT-223
SOP-16
SOP-16
DIP-16
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tape Reel
Tube
LM2940-xx-TN3-T
LM2940L-xx-TN3-T
LM2940-xx-AA3-R LM2940L-xx-AA3-R
LM2940-xx-S16-R
LM2940-xx-S16-T
LM2940-xx-D16-T
LM2940-xx-TA3-T
LM2940L-xx-S16-R
LM2940L-xx-S16-T
LM2940L-xx-D16-T
LM2940L-xx-TA3-T
Tube
Tube
TO-220
Note: xx: Output Voltage, refer to Marking Information.
www.unisonic.com.tw
1
Copyright © 2005 Unisonic Technologies Co.,
QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
LM2940L
Space:Pb/Sn
L:Pb-free
SOT-223
VOLTAGE
CODE
DATE CODE
05 : 5V
08 : 8V
09 : 9V
10 :10V
12 :12V
15 :15V
1
2
3
UTC
LM2940L
Space:Pb/Sn
L:Pb-free
TO-220
TO-252
TO-263
TO-263-3
VOLTAGECODE
DATE CODE
1
2
3
ꢀ
PIN CONFIGURATIONS FOR DIP-16 AND SOP-16
VIN
16
NC
15
GND GND GND GND
NC
NC
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NC
NC
VOUT
NC
GND
NC
NC
NC
ꢀ
TYPICAL APPLICATION
V
IN
V
OUT
LM2940-XX
+
COUT
C1
0.47μF
IQ
22μF
Note: 1.C1 is required if regulator is located far from power supply filter.
2.COUT must be higher than 22µF for stability, and locate as close as possible to the regulator.
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VIN
RATINGS
26
UNIT
V
Input Voltage
Power Dissipation
Junction Temperature
Operating Temperature
Storage temperature
PD
Internally limited
125
TJ
°C
°C
°C
TOPR
TSTG
-20 ~ +85
-40 ~ +150
Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device
could be damaged beyond Absolute maximum ratings.
2. The device is guaranteed to meet performance specifications within 0℃~70℃ operating temperature range
and assured by design from –20℃~85℃.
ꢀ
ELECTRICAL CHARACTERISTICS
(Ta=TJ =25°C, VIN=VOUT+5V, IOUT=1A and COUT=22µF, unless otherwise specified.)
For LM2940-5.0V
PARAMETER
Output Voltage
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX
UNIT
V
6.25V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
4.85 5.00 5.15
Line Regulation
Load Regulation
Output Impedance
△VOUT VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
35
50
50
mV
mV
mΩ
Ro
100 mADC and 20mArms, fo=120Hz
VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
VIN= VOUT+5V, IOUT=1A
35
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT=5mA
150
72
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT=100mA
60
mV/
1000Hr
Long Term Stability
Dropout Voltage
20
IOUT=1A
0.5
0.8
VD
V
I
OUT=100mA
0.11 0.15
Short Circuit Current
ISC
TIN
(Note)
1.6
60
1.9
75
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T ≤ 100ms
-50
-75
V
For LM2940-8.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
9.4V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
MIN
TYP MAX
UNIT
V
Output Voltage
Line regulation
7.76 8.00 8.24
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤1A
20
55
80
80
mV
mV
mΩ
Load Regulation
Output Impedance
Ro
100 mADC and 20mArms, fo=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
VIN= VOUT +5V, IOUT =1A
55
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT =5mA
240
66
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT =100mA
54
mV/
1000Hr
Long Term Stability
Dropout Voltage
32
IOUT =1A
0.5
0.8
VD
V
I
OUT =100mA
0.11 0.15
Short Circuit Current
ISC
TIN
(Note)
1.6
60
1.9
75
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T ≤ 100ms
-50
-75
V
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
ELECTRICAL CHARACTERISTICS(Cont.)
For LM2940-9.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
8.73
TYP MAX
9.00 9.27
UNIT
V
Output Voltage
Line regulation
Load Regulation
Output Impedance
10.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
60
90
90
mV
mV
mΩ
Ro
100 mADC and 20mArms, fo=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
VIN= VOUT +5V, IOUT =1A
60
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT =5mA
270
64
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT =100mA
52
mV/
1000Hr
Long Term Stability
Dropout Voltage
34
IOUT =1A
0.5
0.8
VD
V
IOUT =100mA
(Note)
0.11 0.15
Short Circuit Current
ISC
TIN
1.6
60
1.9
75
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T ≤ 100ms
-50
-75
V
For LM2940-10V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX
UNIT
V
Output Voltage
Line regulation
11.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
9.70 10.00 10.30
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
65
100
100
mV
mV
mΩ
Load Regulation
Output Impedance
Ro
100 mADC and 20mArms, fo=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
VIN= VOUT +5V, IOUT =1A
65
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT =5mA
300
63
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT =100mA
51
mV/
1000Hr
Long Term Stability
Dropout Voltage
36
IOUT =1A
0.5
0.8
VD
V
IOUT =100mA
(Note)
0.11 0.15
Short Circuit Current
ISC
TIN
1.6
60
1.9
75
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T ≤ 100ms
-50
-75
V
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
ELECTRICAL CHARACTERISTICS(Cont.)
UTC LM2940-12V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX
UNIT
V
Output Voltage
Line regulation
Load Regulation
Output Impedance
13.6V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
11.64 12.00 12.36
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
55
120
120
mV
mV
mΩ
Ro
100 mADC and 20mArms, fo=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
VIN= VOUT +5V, IOUT =1A
80
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT =5mA
360
66
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT =100mA
54
mV/
1000Hr
Long Term Stability
Dropout Voltage
48
IOUT =1A
0.5
0.8
VD
V
IOUT =100mA
(Note)
0.11 0.15
Short Circuit Current
ISC
TIN
1.6
60
1.9
75
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T≤100ms
-50
-75
V
UTC LM2940-15V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX
UNIT
V
Output Voltage
Line regulation
16.75V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A 14.55 15.00 15.45
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
70
150
150
mV
mV
mΩ
Load Regulation
Output Impedance
Ro
100 mADC and 20mArms, fo=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
VIN= VOUT +5V, IOUT =1A
100
10
15
45
Quiescent Current
IQ
mA
30
Output Noise Voltage
Ripple Rejection
eN
10Hz-100kHz, IOUT =5mA
450
64
µVrms
dB
RR
fo=120Hz, 1Vrms, IOUT =100mA
52
mV/
1000Hr
Long Term Stability
Dropout Voltage
60
IOUT =1A
0.5
0.8
VD
V
IOUT =100mA
(Note)
0.11 0.15
Short Circuit Current
ISC
TIN
1.6
60
1.9
75
A
V
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
Ro=100Ω, T ≤ 100ms
Ro=100Ω
VRIN
-15
-30
VTRRI
Ro=100Ω, T ≤ 100ms
-50
-75
Note:Output current will decrease with temperature increase but will not drop below 1A at the maximum specified
temperature.
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS
Dropout Voltage
Dropout Voltage vsTemperature
1.0
0.9
0.9
0.8
TJ
=25℃
0.8
0.7
0.6
0.5
0.7
0.6
1A
0.5
0.4
0.4
0.3
0.2
0.1
0
500mA
0.3
0.2
100mA
0.1
0
-40
0
200
400
600
800
0
40
Temperature(℃)
120
160
1000
80
Output Current(mA)
Output Voltage vs Temperature
Quiescent Current vs Temperature
5.10
5.08
5.06
5.04
5.02
50
40
V
IN=VOUT+5V
30
20
1A
5.00
4.98
4.96
500mA
10
0
4.94
4.92
4.90
10mA
40
-40
0
40
80
120
160
-40
0
80
120
160
Temperature(℃)
Temperature(℃)
Quiescent Current
Quiescent Current
50
40
30
20
10
0
200
V
V
T
IN=14V
180
160
140
OUT=5V
J
=25℃
120
100
80
100mA
60
500mA
40
1A
20
0
0
5
10 15 20
25 30 35
0
0.2
0.4
Load Current(A)
0.6
0.8
1.0
6
Input Voltage (V)
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS (cont.)
Line Transient Response
Load Transient Response
30
20
10
0
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
V
IN=10V
VoUT=5 V
OUT=22μF
C
T
J
=25℃
-10
-20
-30
1.0
3V
0V
0.5
0
-10
0
10
20
30 40 50 60
10
-10
0
20
30
40
6.0
18
Time (μS)
Time (μS)
Ripple Rejection
Low Voltage Behavior
95
85
5.0
V
IN=10V
IoUT=1A
VoUT=5 V
=25℃
VoUT=5 V
OUT=22μF
T
J
C
IoUT=10mA
4.0
3.0
75
65
55
2.0
1.0
45
35
10 100
1K 10K 100K 1M
1
1.0
2.0
3.0
4.0
5.0
Frequency(Hz)
Input Voltage (V)
Low Voltage Behavior
IoUT=1A
Low Voltage Behavior
18
15
14
12
10
8
IoUT=1A
VoUT=8 V
=25℃
VoUT=9 V
=25℃
TJ
T
J
12
9
6
6
3
0
4
2
0
0
2
4
6
8
10 12 14
0
3
6
9
12
15
Input Voltage (V)
Input Voltage (V)
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS (cont.)
Low Voltage Behavior
Low Voltage Behavior
18
15
14
12
10
I
V
T
OUT=1A
OUT=10 V
=25℃
I
V
T
OUT=1A
OUT=12 V
J
J=25℃
12
9
8
6
4
2
6
3
0
0
0
3
6
9
15
8
12
18
0
2
4
6
10 12 14
Input Voltage (V)
Input Voltage (V)
Low Voltage Behavior
Output at Voltage Extremes
RO=100Ω
18
15
12
I
V
T
OUT=1A
VOUT=5V
OUT=15 V
10
8
J=25℃
12
9
6
4
6
3
2
0
0
-2
3
9
0
6
12
15
18
10
-30 -20 -10
0
20 30 40
Input Voltage (V)
Input Voltage (V)
Output at Voltage Extremes
O=100Ω
Output at Voltage Extremes
20
16
12
20
16
12
R
RO
=100Ω
VoUT=9V
VoUT=8V
8
4
8
4
0
0
-4
-30
-4
-30
-20
0
10
20
-20
10
20 30
-10
30 40
-10
0
40
Input Voltage (V)
Input Voltage (V)
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS (cont.)
Output at Voltage Extremes
O=100Ω
Output at Voltage Extremes
25
20
15
20
16
12
R
V
O
=100Ω
OUT=12V
R
V
OUT=10V
8
4
10
5
0
0
-4
-30
-5
10
Input Voltage (V)
-20
0
10
-30 -20 -10
0
20 30 40
-10
20 30 40
Input Voltage (V)
Output Capacitor ESR
Output at Voltage Extremes
=100Ω
25
20
100
10
1
R
V
O
C
OUT=22μF
VOUT=5V
OUT=15V
15
10
STABLE
REGION
5
0
0.1
0.01
-5
0
10
200
400
600
-30 -20 -10
20 30 40
0
800 1000
Input Voltage (V)
Output Current(mA)
Peak Output Current
Output Impedance
3.0
2.0
10.00
5.00
V
IN=10V
VOUT=5 V
V
IN=14V
C
OUT=22μF
IoUT=50mA
2.00
1.00
0.50
0.20
0.10
0.05
0.02
1.0
0
0.01
0
1
100
-40
40
80
120
160
10
1K 10K 100K 1M
Temperature( ℃)
Frequency (Hz)
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QW-R102-016.B
LM2940
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS (cont.)
Maximum Power Dissipation (TO-220)
Infinite Heatsink
Maximum Power Dissipation(TO-263-3)
Infinite Heatsink
22
20
18
16
14
12
10
θJA=32℃/W
4
3
2
θJA=37℃/W
θJA=50℃/W
θJA=73℃/W
10℃/W Heatsink
8
6
1
0
4
NO Heatsink
NO Heatsink
2
0
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Ambient Temperatire (℃)
Ambient Temperatire (℃)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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