LM2940G-90-TN3-R [UTC]
1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR;
| 型号： | LM2940G-90-TN3-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | 1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR |
| 文件： | 总12页 (文件大小：368K) |
| 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
* 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
Ordering Number
Pin Assignment
Packing
Package
Lead Free
Halogen Free
1
I
2
3
-
LM2940G-xx-AA3-R
LM2940G-xx-TA3-T
LM2940G-xx-TF3-T
LM2940G-xx-TN3-R
LM2940G-xx-TQ2-R
LM2940G-xx-TQ2-T
LM2940G-xx-TQ3-R
LM2940G-xx-TQ3-T
SOT-223
TO-220
G
G
G
G
G
G
G
G
O
O
O
O
O
O
O
O
Tape Reel
Tube
LM2940L-xx-TA3-T
LM2940L-xx-TF3-T
LM2940L-xx-TN3-R
LM2940L-xx-TQ2-R
LM2940L-xx-TQ2-T
LM2940L-xx-TQ3-R
LM2940L-xx-TQ3-T
I
TO-220F
TO-252
I
Tube
I
Tape Reel
Tape Reel
Tube
TO-263
I
TO-263
I
TO-263-3
TO-263-3
I
Tape Reel
Tube
I
Notes: 1. xx: Output Voltage, refer to Marking Information.
2. Pin Assignment: I: VIN G: GND O:VOUT
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LM2940
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
SOT-223
50 : 5V
60 : 6V
80 : 8V
90 : 9V
10 :10V
12 :12V
15 :15V
TO-220
TO-252
TO-263
TO-263-3
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LM2940
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
26
UNIT
V
Input Voltage
VIN
PD
TJ
Power Dissipation
Internally limited
+150
Junction Temperature
C
C
C
TO-220/TO-220F
TO-263-3/TO-263
SOT-223/ TO-252
-40 ~ +125
Ambient Operating
Temperature
TOPR
TSTG
-40 ~ +85
Storage Temperature
-65 ~ +150
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.
THERMAL DATA
PARAMETER
SOT-223
SYMBOL
RATING
174
UNIT
TO-220/TO-220F
TO-263/TO-263-3
TO-252
60
Junction to Ambient
Junction to Case
θJA
C/W
80
125
TO-220/TO-263
TO-263-3
4
TO-220F
6
θJC
C/W
TO-252
12
15
SOT-223
ELECTRICAL CHARACTERISTICS
(TA=TJ =25C, VIN=VOUT+5V, IOUT=1A and COUT=22μF, unless otherwise specified.)
For LM2940-5.0V
PARAMETER
Output Voltage
SYMBOL
VOUT
TEST CONDITIONS
MIN
4.85
TYP MAX
UNIT
V
6.25V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
5.00
20
5.15
50
Line Regulation
△VOUT VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤ 1A
mV
Load Regulation
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
Long Term Stability
35
50
mV
ROUT
IQ
100 mA DC and 20mARMS, fO=120Hz
35
mΩ
VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
10Hz-100kHz, IOUT=5mA
10
15
mA
eN
150
72
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT=100mA
54
20
mV/1000Hr
I
OUT=1A
0.5
0.13
2.5
75
0.8
Dropout Voltage
VD
V
IOUT=100mA
(Note)
0.15
Short Circuit Current
ISC
TIN
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient
Input Voltage
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
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LM2940
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LM2940-6.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
5.82
TYP MAX
UNIT
V
Output Voltage
7.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
6.00
20
6.18
60
Line Regulation
△VOUT VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤ 1A
mV
Load Regulation
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
Long Term Stability
40
60
mV
ROUT
IQ
100 mA DC and 20mARMS, fO=120Hz
VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA
10Hz-100kHz, IOUT=5mA
40
mΩ
10
15
mA
eN
180
72
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT=100mA
60
20
mV/1000Hr
I
OUT=1A
0.5
0.13
2.5
75
0.8
Dropout Voltage
VD
V
IOUT=100mA
(Note)
0.15
Short Circuit Current
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ISC
TIN
A
V
V
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
For LM2940-8.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
9.4V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
MIN
7.76
TYP MAX
UNIT
V
Output Voltage
8.00
20
8.24
80
Line regulation
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT=5mA
△VOUT 50mA ≤ IOUT ≤1A
mV
Load Regulation
55
80
mV
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
ROUT
IQ
100 mA DC and 20mARMS, fO=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10Hz-100kHz, IOUT =5mA
55
mΩ
10
15
mA
eN
240
66
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT =100mA
54
Long Term Stability
32
mV/1000Hr
I
OUT =1A
0.5
0.13
2.5
75
0.8
Dropout Voltage
VD
V
IOUT =100mA
(Note)
0.15
Short Circuit Current
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ISC
TIN
A
V
V
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
For LM2940-9.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
10.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
MIN
8.73
TYP MAX
UNIT
V
Output Voltage
9.00
20
9.27
90
Line regulation
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
mV
Load Regulation
60
90
mV
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
ROUT
IQ
100 mA DC and 20mARMS, fO=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10Hz-100kHz, IOUT =5mA
60
mΩ
10
15
mA
eN
270
64
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT =100mA
52
Long Term Stability
34
mV/1000Hr
I
OUT =1A
0.5
0.13
2.5
75
0.8
Dropout Voltage
VD
V
IOUT =100mA
(Note)
0.15
Short Circuit Current
ISC
TIN
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
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LM2940
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LM2940-10V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP MAX
UNIT
V
Output Voltage
11.5V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
9.70 10.00 10.30
Line regulation
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
65
100
100
mV
Load Regulation
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
Long Term Stability
mV
ROUT
IQ
100mA DC and 20mARMS, fO=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10Hz-100kHz, IOUT =5mA
65
mΩ
10
15
mA
eN
300
63
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT =100mA
51
36
mV/1000Hr
I
OUT =1A
0.5
0.13
2.5
75
0.8
Dropout Voltage
VD
V
IOUT =100mA
(Note)
0.15
Short Circuit Current
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ISC
TIN
A
V
V
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
UTC LM2940-12V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
13.6V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
MIN
TYP
MAX
UNIT
V
Output Voltage
11.64 12.00 12.36
Line regulation
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
55
120
120
mV
Load Regulation
mV
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
ROUT
IQ
100mA DC and 20mARMS, fO=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10Hz-100kHz, IOUT =5mA
80
mΩ
10
15
mA
eN
360
66
μVRMS
dB
RR
fO=120Hz, 1VRMs, IOUT =100mA
54
Long Term Stability
48
mV/1000Hr
I
OUT =1A
0.5
0.11
2.5
75
0.8
Dropout Voltage
VD
V
IOUT =100mA
(Note)
0.15
Short Circuit Current
ISC
TIN
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
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LM2940
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
UTC LM2940-15V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
Output Voltage
16.75V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A 14.55 15.00 15.45
Line regulation
△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
△VOUT 50mA ≤ IOUT ≤ 1A
20
70
150
150
mV
Load Regulation
Output Impedance
Quiescent Current
Output Noise Voltage
Ripple Rejection
Long Term Stability
mV
ROUT
IQ
100mA DC and 20mARMS, fO=120Hz
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10Hz-100kHz, IOUT =5mA
100
10
mΩ
15
mA
eN
450
64
μVRMS
dB
RR
fO=120Hz, 1VRMS, IOUT =100mA
52
60
mV/1000Hr
I
OUT =1A
0.5
0.11
2.5
75
0.8
Dropout Voltage
VD
V
IOUT =100mA
(Note)
0.15
Short Circuit Current
ISC
TIN
A
V
V
Maximum Line Transient
Reverse Polarity DC Input Voltage
Reverse Polarity Transient Input
Voltage
ROUT=100Ω, T ≤ 100ms
ROUT=100Ω
60
VRIN
-15
-30
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
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. CO 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°С
0.9
0.8
0.7
0.6
0.5
0.7
0.6
0.5
1A
0.4
0.3
0.2
0.4
0.3
0.2
500mA
100mA
0.1
0
0.1
0
-40
0
200
400 600
Output Current (mA)
800
40
Temperature (°С)
0
120 160
1000
80
Output Voltage vs. Temperature
Quiescent Current vs. Temperature
VIN=VOUT+5V
5.10
50
40
5.08
5.06
5.04
5.02
30
20
1A
5.00
4.98
4.96
500mA
10
0
4.94
4.92
4.90
10mA
0
-40
40
80
120 160
-40
0
40
80
160
120
Temperature (°С)
Temperature (°С)
Quiescent Current vs. Load Current
VIN=14V
VOUT=5V
TJ=25°С
Quiescent Current vs. Input Voltage
50
40
30
20
10
0
200
180
160
140
120
100
80
100mA
60
500mA
1A
40
20
0
15 20
Input Voltage (V)
30
0
5
10
25
35
0
0.2
0.4
Load Current (A)
0.6
0.8
1.0
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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°С
-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
Low Voltage Behavior
95
85
5.0
VIN=10V
IoUT=1A
VoUT=5 V
TJ=25°С
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°С
Low Voltage Behavior
18
15
14
12
10
8
IoUT=1A
VoUT=8 V
TJ=25°С
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
ROUT=100Ω
25
20
20
ROUT=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
Output at Voltage Extremes
ROUT=100Ω
100
10
1
25
20
COUT=22μF
VOUT=5V
VOUT=15V
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
VIN=14V
2.00
IoUT=50mA
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 (°С)
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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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