LM2937L-33-TQ3-R [UTC]
500mA LOW DROPOUT VOLTAGE REGULATOR; 500毫安低压差稳压器
| 型号： | LM2937L-33-TQ3-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | 500mA LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总10页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LM2937
LINEAR INTEGRATED CIRCUIT
500mA LOW DROPOUT
VOLTAGE REGULATOR
1
TO-220
ꢀ
DESCRIPTION
The UTC LM2937 is a positive voltage regulator capable of
supplying up to 500mA of load current. The use of a PNP power
transistor provides a low dropout voltage characteristic. With a
load current of 500mA the minimum input to output voltage
differential required for the output to remain in regulation is
typically 0.5V(1V guaranteed maximum over the full operating
temperature range). Special circuitry has been incorporated to
minimize the quiescent current to typically only 10mA with a full
500mA load current when the input to output voltage differential is
greater than 3V.
1
TO-263
1
TO-263-3
The UTC LM2937 requires an output bypass capacitor for
stability. As with most low dropout regulators, the ESR of this
capacitor remains a critical design parameter, but the LM2937
includes special compensation circuitry that relaxes ESR
requirements. The UTC LM2937 is stable for all ESR below
3Ω.This allows the use of low ESR chip capacitors.
1
TO-263-5
Ideally suited for automotive applications, the UTC LM2937 will
protect itself and any load circuitry from reverse battery
connections, two-battery jumps and up to +60V/-50V load dump
transients. Familiar regulator features such as short circuit and
thermal shutdown protection are also built in.
*Pb-free plating product number:LM2937L-X
X
ꢀ
FEATURES
* Fully specified for operation over -40°C~ +125°C
* Output current in excess of 500mA
* Output trimmed for 5% tolerance under all operating conditions
* Typical dropout voltage of 0.5V at full rated load current
* Wide output capacitor ESR range, up to 3ꢀ
* Reverse battery protection
* Internal short circuit and thermal overload protection
* 60V input transient protection
* Mirror image insertion protection
* Built-in ON/OFF control function
ꢀ ORDERING INFORMATION
Order Number
Package
Packing
Normal
Lead Free Plating
LM2937L-xx-TA3-T
LM2937L-xx-TQ2-R
LM2937L-xx-TQ2-T
LM2937L-xx-TQ3-R
LM2937L-xx-TQ3-T
LM2937L-xx-TQ5-R
LM2937L-xx-TQ5-T
LM2937-xx-TA3-T
LM2937-xx-TQ2-R
LM2937-xx-TQ2-T
LM2937-xx-TQ3-R
LM2937-xx-TQ3-T
LM2937-xx-TQ5-R
LM2937-xx-TQ5-T
TO-220
TO-263
TO-263
Tube
Tape Reel
Tube
TO-263-3
TO-263-3
TO-263-5
TO-263-5
Tape Reel
Tube
Tape Reel
Tube
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
ORDERING INFORMATION (Cont.)
LM2937L-xx-TA3-R
(1) R: Tape Reel, T: Tube
(1)Packing Type
(2) TA3: TO-220, TQ2: TO-263, TQ3: TO-263-3,
TQ 5: TO-263-5
(3) xx: refer to Marking Information
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(4) L: Lead Free Plating, Blank: Pb/Sn
ꢀ
PIN CONFIGURATION
PIN NO.
PIN NAME
TO-263/TO-263-3/TO-220 TO-263-5
1
2
3
-
4
3
5
1
2
Input
GND
Output
N/C
-
ON/OFF
ꢀ
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
UTC
LM2937
LEAD PLATING
TO-220
TO-263
TO-263-3
33 :3.3V
50 :5.0V
80 :8.0V
10 :10V
12 :12V
15 :15V
VOLTAGECODE
DATE CODE
1
2
3
UTC
LM2937
LEAD PLATING
DATE CODE
TO-263-5
VOLTAGE CODE
1 2 3 4 5
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
ABSOLUTE MAXIMUM RATINGS (Note 1)
PARAMETER
SYMBOL
VIN
RATINGS
26
UNIT
V
Input Voltage
Power Dissipation(Note 2)
Maximum Junction Temperature
Storage Temperature
PD
Internally limited
+150
TJ
°
°
C
C
TSTG
-40 ~ +150
Note 1
.
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical
Specifications do not apply when operating the device outside of its rated Operating Conditions.
2
.
The maximum allowable power dissipation at any ambient temperature is PMAX = (125-TA)/ θJA, where 125 is
the maximum junction temperature for operation, TA is the ambient temperature, and θJA is the junction to
ambient thermal resistance. If this dissipation is exceeded, the die temperature will rise above 125
°
C and
the electrical specifications do not apply. If the die temperature rises above 150
thermal shutdown.
°C, the LM2937 will go into
ꢀ
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
UNIT
TO-220
TO-263
65
73
73
3
Thermal Resistance Junction- Ambient
Thermal Resistance Junction- Case
θJA
TO-263-5
TO-220
°
C/W
θJC
TO-263
4
TO-263-5
4
ꢀ
ELECTRICAL CHARACTERISTICS
(VIN=VNOM+5V, IOUT=500mA, COUT=10µF, TJ=Ta=25
°
C, unless otherwise specified.)
TEST CONDITIONS
For LM2937-3.3V
PARAMETER
Output Voltage
SYMBOL
VOUT
MIN
3.21
TYP
MAX
3.39
30
UNIT
5mA≤IOUT≤500mA
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VO+2V)≤VIN ≤26V, IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
3.30
9
V
mV
mV
mA
mA
µVrms
mV
V
Line Regulation
Load Regulation
△
VOUT
VOUT
△
3
30
2
10
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
100
12
IOUT=500mA
0.5
110
1.0
75
1.0
Dropout Voltage
VD
IOUT=50mA
250
mV
A
Short Circuit Current
ISC
TIN
0.6
60
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
tF≤100ms, RL=100ꢀ
VOUT ≥-0.6V, RL=100ꢀ
tF<1ms, RL=100ꢀ
V
VRIN
VTRRI
-15
-50
-30
-75
V
V
For LM2937-5.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
5mA≤IOUT≤500mA
MIN
4.85
TYP
5.00
15
MAX
5.15
50
UNIT
V
Output Voltage
Line Regulation
Load Regulation
△
VOUT
VOUT
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
mV
mV
mA
mA
µVrms
mV
V
△
5
50
(VOUT+2V)≤VIN ≤26V, IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
2
10
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
150
20
IOUT=500mA
0.5
110
1.0
Dropout Voltage
VD
I
OUT=50mA
250
mV
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL
ISC
TEST CONDITIONS
MIN
0.6
60
TYP
1.0
75
MAX
UNIT
Short Circuit Current
A
V
V
V
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
TIN
tF≤100ms, RL=100ꢀ
VRIN
VOUT ≥-0.6V, RL=100ꢀ
tF<1ms, RL=100ꢀ
-15
-50
-30
-75
VTRRI
For LM2937-8.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
5mA≤IOUT≤500mA
MIN
7.76
TYP
8.00
24
MAX
8.24
80
UNIT
V
Output Voltage
Line Regulation
Load Regulation
△
VOUT
VOUT
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
mV
mV
mA
mA
µVrms
mV
V
△
8
80
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= Vo+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
2
10
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
240
32
IOUT=500mA
0.5
110
1.0
75
1.0
Dropout Voltage
VD
IOUT=50mA
250
mV
A
Short Circuit Current
ISC
TIN
0.6
60
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
tF≤100ms, RL=100ꢀ
VOUT ≥-0.6V, RL=100ꢀ
tF<1ms, RL=100ꢀ
V
VRIN
VTRRI
-15
-50
-30
-75
V
V
For LM2937-10.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
5mA≤IOUT≤500mA
MIN
9.70
TYP
MAX
UNIT
V
Output Voltage
Line Regulation
Load Regulation
10.00 10.30
△
VOUT
VOUT
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
30
10
100
100
10
mV
mV
mA
mA
µVrms
mV
V
△
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
2
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
300
40
IOUT=500mA
0.5
110
1.0
75
1.0
Dropout Voltage
VD
I
OUT=50mA
250
mV
A
Short Circuit Current
ISC
TIN
0.6
60
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
tF≤100ms ,RL=100ꢀ
VOUT≥-0.6V ,RL=100ꢀ
tF<1ms ,RL=100ꢀ
V
VRIN
VTRRI
-15
-50
-30
-75
V
V
For LM2937-12.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
5mA≤IOUT≤500mA
MIN
TYP
MAX
UNIT
V
Output Voltage
Line Regulation
Load Regulation
11.64 12.00 12.36
△
VOUT
VOUT
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
36
12
120
120
10
mV
mV
mA
mA
µVrms
mV
V
△
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
2
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
360
44
IOUT=500mA
0.5
110
1.0
75
1.0
Dropout Voltage
VD
IOUT=50mA
250
mV
A
Short Circuit Current
ISC
TIN
0.6
60
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
tF≤100ms, RL=100ꢀ
VOUT≥-0.6V, RL=100ꢀ
tF<1ms, RL=100ꢀ
V
VRIN
VTRRI
-15
-50
-30
-75
V
V
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
ELECTRICAL CHARACTERISTICS (Cont.)
For LM2937-15.0V
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
5mA≤IOUT≤500mA
MIN
TYP
MAX
UNIT
V
Output Voltage
Line Regulation
Load Regulation
14.55 15.00 15.45
△
VOUT
VOUT
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
45
15
150
150
10
mV
mV
mA
mA
µVrms
mV
V
△
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
2
Quiescent Current
IQ
10
20
Output Noise Voltage
Long Term Stability
eN
450
56
IOUT=500mA
0.5
110
1.0
75
1.0
Dropout Voltage
VD
I
OUT=50mA
250
mV
A
Short Circuit Current
ISC
TIN
0.6
60
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
tF≤100ms, RL=100ꢀ
VOUT≥-0.6V, RL=100ꢀ
tF<1ms, RL=100ꢀ
V
VRIN
VTRRI
-15
-50
-30
-75
V
V
ꢀ
ON/OFF CONTROL (For 5 pins only)
PARAMETER
SYMBOL
VON
TEST CONDITIONS
MIN
2.0
TYP
50
MAX
0.8
UNIT
V
IOUT
IOUT
≦
≦
0.5A
0.5A
ON/OFF Threshold Voltage ON
ON/OFF Threshold Voltage OFF
ON/OFF Threshold Current
VOFF
V
μ
A
ION/OFF
VON/OFF=2.0V, IOUT=0.5A
100
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL APPLICATION
3
VOUT
V
IN
1
UTC LM2937-XX
UNREGULATED
INPUT
REGULATED
OUTPUT
2
CIN*
C
10
OUT**
μ
10
IQ
F
μ
F
ꢀ
ON/OFF CONTROL APPLICATION
5
V
IN
4
VOUT
UTC LM2937-XX
UNREGULATED
INPUT
REGULATED
OUTPUT
1
3
2
CIN*
N/C
C
10
OUT**
ON/OFF
μ
10
IQ
F
μ
F
* Required if the regulator is located more than 3 inches from the power supply filter capacitors.
**Required for stability. COUT must be at least 10µF (over the full expected operating temperature range) and located
as close as possible to the regulator. The equivalent series resistance, ESR, of this capacitor may be as high as 3ꢀ.
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS
Dropout Voltage vs Temperature
Dropout Voltage vs Output Current
0.9
0.8
1.0
T
J
=25℃
0.9
0.8
0.7
0.7
0.6
0.5A
0.6
0.5
0.5
0.4
0.25A
0.4
0.3
0.3
0.2
0.2
0.05A
0.1
0
0.1
0
-40
0
40
80
120
0
100
200
300
400
500
Temperature(℃)
Output Current(mA)
Output Voltage vs Temperature
Quiescent Current vs Temperature
20
5.10
R
L
=100Ω
5.08
5.06
15
10
5.04
5.02
5.00
500mA
250mA
5mA
4.98
4.96
5
0
4.94
4.92
4.90
-40
0
40
80
120
0
80
Temperature(℃)
120
-40
40
Temperature(℃)
Quiescent Current vs Input Voltage
Quiescent Current vs Input Voltage
100
90
10
9
V
V
IN=14V
OUT=5V
V
OUT=5V
Ta=25℃
T
J
=25℃
80
8
7
70
60
6
5
0.5A
50
40
30
4
3
0.25A
0.05A
20
2
10
0
1
0
0
0
5
10 15
20
25 30 35
100
300
Output Current (mA)
400
500
200
Input Voltage (V)
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS(Cont.)
Load Transient Response
Line Transient Response
40
20
IOUT=50mA
VOUT=5 V
Ta=25℃
50
0
0
-50
-20
400
0
3V
0V
5
6
50 60
-1
0
1
2
3
4
-10
0
10
20 30
Time (μs)
40
Time (μs)
Ripple Rejection
Low Voltage Behavior
OUT=500mA
OUT=5 V
5.0
I
V
V
IN=10V
V
C
OUT=5 V
μ
T
J=25℃
OUT=10
F
70
4.0
3.0
I
OUT=50mA
60
50
2.0
40
1.0
0
0
2.0
4.0
5.0 6.0
1.0
3.0
10
100
1K
10K
100K
1M
Input Voltage (V)
Frequency (Hz)
Low Voltage Behavior
IOUT=500mA
Low Voltage Behavior
18
15
14
I
T
OUT=500mA
J=25℃
T
J=25℃
VOUT=15 V
12
10
8
VOUT=10V
12
VOUT=12 V
9
6
V
OUT=8 V
6
4
3
0
2
0
3
6
12
15
18
2
4
6
10 12 14
0
9
0
8
Input Voltage (V)
Input Voltage (V)
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LM2937
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL CHARACTERISTICS(Cont.)
Output at Voltage Extremes
Output at Voltage Extremes
12
10
20
16
RL
=100Ω
RL=100Ω
VOUT=10V
VOUT=15V
8
6
12
8
VOUT=8V
VOUT=12V
4
2
VOUT=5V
4
0
0
-2
-30
-4
-30
-20 -10
0
20 30 40
-20 -10
0
20 30 40
10
10
Input Voltage (V)
Input Voltage (V)
Output Impedance
IN=14V
Output Capacitor ESR
100
10
1
V
V
C
OUT=5V
OUT=10μF
V
OUT=5 V
OUT=10μF
OUT=25mA
10
C
I
1.0
0.1
STABLE
0.1
REGION
0.01
0.01
10
1K
10K 100K
1M
100
100
200
400
500
0
300
Frequency(Hz)
Output Current (mA)
Peak Output Current
1.5
1.0
V
IN=14V
0.5
0
0
40
80
120
-40
Temperature(℃)
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LM2937
LINEAR INTEGRATED CIRCUIT
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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