LM2940L-05-TN3-D-R [UTC]
Regulator;
| 型号： | LM2940L-05-TN3-D-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | Regulator |
| 文件： | 总11页 (文件大小：380K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LM2940
LINEAR INTEGRATED CIRCUIT
1A LOW-DROPOUT POSITIVE
VOLTAGE REGULATOR
1
DESCRIPTION
The UTC LM2940 is a low dropout regulator designed to provide
output current up to 1A with a typically 500mV dropout Voltage and
a maximum of 1V. It is capable of reducing the ground current when
the differential between the input voltage and the output voltage
outrun 3V.
UTC LM2940 offers low quiescent current (typically 30mA at 1A
and an input-output differential of 5V). Higher quiescent currents
only exist when the regulator is in the dropout mode (VIN-VOUT≤3V).
FEATURES
*Pb-free plating product number: LM2940L
* 500mV typically dropout at 1A
* Output current in excess of 1A
* Low quiescent current
* Reversed-battery protection
* Current limit and thermal shutdown.
* Mirror image insertion protection
ORDERING INFORMATION
Order Number
Pin Assignment
Packing
Package
Normal
Lead Free Plating
1
I
2
3
LM2940-xx-AA3-D-R
LM2940-xx-D16-T
LM2940-xx-S16-R
LM2940-xx-S16-T
LM2940-xx-TA3-D-T
LM2940-xx-TN3-D-R
LM2940-xx-TN3-D-T
LM2940-xx-TQ2-D-R
LM2940-xx-TQ2-D-T
LM2940-xx-TQ3-D-R
LM2940-xx-TQ3-D-T
LM2940L-xx-AA3-D-R
LM2940L-xx-D16-T
SOT-223
DIP-16
G
O
Tape Reel
Tube
Refer to Pin
Configurations
LM2940L-xx-S16-R
LM2940L-xx-S16-T
SOP-16
SOP-16
TO-220
TO-252
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
Tape Reel
Tube
LM2940L-xx-TA3-D-T
LM2940L-xx-TN3-D-R
LM2940L-xx-TN3-D-T
LM2940L-xx-TQ2-D-R
LM2940L-xx-TQ2-D-T
LM2940L-xx-TQ3-D-R
LM2940L-xx-TQ3-D-T
I
G
G
G
G
G
G
G
O
Tube
I
I
I
I
I
I
O
O
O
O
O
O
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Note: 1.xx: output voltage, refer to Marking Information.
2.Pin Assignment: I: VIN G: GND O:VOUT
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QW-R102-016.C
LM2940
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
SOT-223
05 : 5V
08 : 8V
09 : 9V
10 :10V
12 :12V
15 :15V
TO-220
TO-252
TO-263
TO-263-3
PIN CONFIGURATIONS FOR DIP-16 AND SOP-16
VIN
16
NC
15
GND GND GND GND
NC
10
NC
9
14
13
12
11
1
2
3
4
5
6
7
8
NC
NC
VOUT
NC
GND
NC
NC
NC
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LM2940
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
26
UNIT
V
Input Voltage
VIN
PD
TJ
Power Dissipation
Junction Temperature
Internally limited
+150
°C
°C
°C
°C
°C
TO-220/TO-263-3/TO-263
-40 ~ +125
-40 ~ +85
-55 ~ +125
-65 ~ +150
Operating Temperature
TOPR
SOT-223
DIP/SOP
Storage temperature
TSTG
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
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
6.25V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
4.85 5.00 5.15
V
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 mA DC 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
Output Voltage
Line regulation
7.76 8.00 8.24
V
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤1A
20
55
80
80
mV
mV
mΩ
Load Regulation
Output Impedance
Ro
100 mA DC 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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LM2940
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LM2940-9.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
8.73
TYP MAX UNIT
Output Voltage
Line regulation
Load Regulation
Output Impedance
10.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
9.00 9.27
V
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
60
90
90
mV
mV
mΩ
Ro
100 mA DC 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
Output Voltage
Line regulation
11.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
9.70 10.00 10.30
V
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
65
100
100
mV
mV
mΩ
Load Regulation
Output Impedance
Ro
100 mA DC 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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LM2940
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
UTC LM2940-12V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX UNIT
Output Voltage
Line regulation
Load Regulation
Output Impedance
13.6V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
11.64 12.00 12.36
V
△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
Output Voltage
Line regulation
16.75V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A 14.55 15.00 15.45
V
△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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LM2940
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
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.
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LM2940
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Dropout Voltage vs. Output Current
Dropout Voltage vs.Temperature
1.0
0.9
0.8
TJ=25℃
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.7
0.6
1A
0.5
0.4
500mA
0.3
0.2
100mA
0.1
0
0.1
0
-40
0
200
400
600
800
40
Temperature (℃)
0
120
160
1000
160
35
80
Output Current (mA)
Output Voltage vs. Temperature
Quiescent Current vs. Temperature
VIN=VOUT+5V
5.10
5.08
5.06
5.04
5.02
50
40
30
20
1A
5.00
4.98
4.96
500mA
10
0
4.94
4.92
4.90
10mA
0
-40
40
80
120
-40
0
40
80
160
120
Temperature (℃)
Temperature (℃)
Quiescent Current vs. Load Current
VIN=14V
Quiescent Current vs. Input Voltage
50
40
30
20
10
0
200
180
160
140
VOUT=5V
TJ=25℃
120
100
80
100mA
60
500mA
1A
40
20
0
15
20
30
0
5
10
25
0
0.2
0.4
0.6
0.8
1.0
Input Voltage (V)
Load Current (A)
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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
VIN=10V
VoUT=5 V
COUT=22μF
TJ=25℃
-10
-20
-30
1.0
3V
0V
0.5
0
-10
50 60
0
10
20
30 40
0
10
20
30
40
-10
Time (μS)
Time (μS)
Ripple Rejection vs. Frequency
VIN=10V
Low Voltage Behavior
95
85
5.0
IoUT=1A
VoUT=5 V
TJ=25℃
VoUT=5 V
COUT=22μF
IoUT=10mA
4.0
3.0
75
65
55
2.0
1.0
45
35
1K
10K 100K 1M
10
100
1
6.0
1.0
2.0
3.0
4.0
5.0
Frequency (Hz)
Input Voltage (V)
Low Voltage Behavior
IoUT=1A
VoUT=9 V
TJ=25℃
Low Voltage Behavior
18
15
14
12
10
8
IoUT=1A
VoUT=8 V
TJ=25℃
12
9
6
6
3
0
4
2
0
8
0
3
15
0
2
4
6
10 12
14
6
9
12
Input Voltage (V)
18
Input Voltage (V)
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LM2940
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
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LM2940
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
Output at Voltage Extremes
Output at Voltage Extremes
RO=100Ω
25
20
20
RO=100Ω
VOUT=12V
VOUT=10V
16
12
8
15
10
4
5
0
0
-4
-30
-5
-20
0
10
Input Voltage (V)
10
-30 -20 -10
0
20 30 40
-10
20 30 40
Input Voltage (V)
Output Capacitor ESR
COUT=22μF
Output at Voltage Extremes
RO=100Ω
100
10
1
25
20
VOUT=15V
VOUT=5V
15
10
STABLE
REGION
5
0
0.1
0.01
-5
0
200
400
10
600
-30 -20 -10
20 30 40
0
800 1000
Input Voltage (V)
Output Current (mA)
Output Impedance
Peak Output Current
3.0
2.0
10.00
5.00
VIN=10V
VOUT=5 V
COUT=22μF
IoUT=50mA
VIN=14V
2.00
1.00
0.50
0.20
0.10
0.05
0.02
1.0
0
0.01
0
1
10
100
1K 10K 100K 1M
-40
40
80
120
160
Frequency (Hz)
Temperature ( ℃)
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LM2940
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
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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