UTC LM2937L-12-TQ3-R 500ma low dropout voltage regulator Datasheet

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.
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.
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.
1
TO-263
1
TO-263-3
1
TO-263-5
*Pb-free plating product number:LM2937L-XX
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 3Ω
* 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
Normal
Lead Free Plating
LM2937-xx-TA3-T
LM2937L-xx-TA3-T
LM2937-xx-TQ2-R
LM2937L-xx-TQ2-R
LM2937-xx-TQ2-T
LM2937L-xx-TQ2-T
LM2937-xx-TQ3-R
LM2937L-xx-TQ3-R
LM2937-xx-TQ3-T
LM2937L-xx-TQ3-T
LM2937-xx-TQ5-R
LM2937L-xx-TQ5-R
LM2937-xx-TQ5-T
LM2937L-xx-TQ5-T
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
Package
Packing
TO-220
TO-263
TO-263
TO-263-3
TO-263-3
TO-263-5
TO-263-5
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
1 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
ORDERING INFORMATION (Cont.)
LM2937L-xx-TA3-R
(1) R: Tape Reel, T: Tube
(1)Packing Type
(3)Output Voltage Code
(2) TA3: TO-220, TQ2: TO-263, TQ3: TO-263-3,
TQ 5: TO-263-5
(3) xx: refer to Marking Information
(4)Lead Plating
(4) L: Lead Free Plating, Blank: Pb/Sn
(2)Package Type
PIN CONFIGURATION
PIN NO.
TO-263/TO-263-3/TO-220
1
2
3
-
TO-263-5
4
3
5
1
2
PIN NAME
Input
GND
Output
N/C
ON/OFF
MARKING INFORMATION
PACKAGE
TO-220
TO-263
TO-263-3
TO-263-5
VOLTAGE CODE
MARKING
UTC
LM2937
33
50
80
10
12
15
:3.3V
:5.0V
:8.0V
:10V
:12V
:15V
LEAD PLATING
VOLTAGECODE
DATE CODE
1
2
3
UTC
LM2937
VOLTAGE CODE
LEAD PLATING
DATE CODE
1 2 3 4 5
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2 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
26
V
Power Dissipation(Note 2)
PD
Internally limited
Maximum Junction Temperature
TJ
+150
°C
Storage Temperature
TSTG
-40 ~ +150
°C
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°C, the LM2937 will go into
thermal shutdown.
THERMAL DATA
PARAMETER
SYMBOL
Thermal Resistance Junction- Ambient
Thermal Resistance Junction- Case
TO-220
TO-263
θJA
RATINGS
65
73
TO-263-5
73
TO-220
3
TO-263
θJC
UNIT
°C/W
4
TO-263-5
4
ELECTRICAL CHARACTERISTICS
(VIN=VNOM+5V, IOUT=500mA, COUT=10µF, TJ=Ta=25°C, unless otherwise specified.)
For LM2937-3.3V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
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
IOUT=500mA
IOUT=50mA
tF≤100ms, RL=100Ω
VOUT ≥-0.6V, RL=100Ω
tF<1ms, RL=100Ω
MIN
3.21
0.6
60
-15
-50
TYP
3.30
9
3
2
10
100
12
0.5
110
1.0
75
-30
-75
MAX
3.39
30
30
10
20
TYP
5.00
15
5
2
10
150
20
0.5
110
MAX
5.15
50
50
10
20
1.0
250
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
A
V
V
V
For LM2937-5.0V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
TEST CONDITIONS
5mA≤IOUT≤500mA
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VOUT+2V)≤VIN ≤26V, IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
IOUT=500mA
IOUT=50mA
UNISONIC TECHNOLOGIES CO., LTD
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MIN
4.85
1.0
250
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
3 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
SYMBOL
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
tF≤100ms, RL=100Ω
VOUT ≥-0.6V, RL=100Ω
tF<1ms, RL=100Ω
MIN
0.6
60
-15
-50
TYP
1.0
75
-30
-75
MAX
UNIT
A
V
V
V
MIN
7.76
TYP
8.00
24
8
2
10
240
32
0.5
110
1.0
75
-30
-75
MAX
8.24
80
80
10
20
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
A
V
V
V
TYP
10.00
30
10
2
10
300
40
0.5
110
1.0
75
-30
-75
MAX
10.30
100
100
10
20
TYP
12.00
36
12
2
10
360
44
0.5
110
1.0
75
-30
-75
MAX
12.36
120
120
10
20
For LM2937-8.0V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
5mA≤IOUT≤500mA
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= Vo+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
IOUT=500mA
IOUT=50mA
tF≤100ms, RL=100Ω
VOUT ≥-0.6V, RL=100Ω
tF<1ms, RL=100Ω
0.6
60
-15
-50
1.0
250
For LM2937-10.0V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
5mA≤IOUT≤500mA
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
IOUT=500mA
IOUT=50mA
tF≤100ms ,RL=100Ω
VOUT≥-0.6V ,RL=100Ω
tF<1ms ,RL=100Ω
MIN
9.70
0.6
60
-15
-50
1.0
250
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
A
V
V
V
For LM2937-12.0V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
MIN
5mA≤IOUT≤500mA
11.64
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
IOUT=500mA
IOUT=50mA
0.6
tF≤100ms, RL=100Ω
60
VOUT≥-0.6V, RL=100Ω
-15
tF<1ms, RL=100Ω
-50
UNISONIC TECHNOLOGIES CO., LTD
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1.0
250
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
A
V
V
V
4 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Cont.)
For LM2937-15.0V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
SYMBOL
VOUT
△VOUT
△VOUT
Quiescent Current
IQ
Output Noise Voltage
Long Term Stability
eN
Dropout Voltage
VD
Short Circuit Current
Peak Line Transient Voltage
Reverse DC Input Voltage
Reverse Transient Input Voltage
ISC
TIN
VRIN
VTRRI
TEST CONDITIONS
MIN
5mA≤IOUT≤500mA
14.55
VOUT+2V≤VIN≤26V, IOUT=5mA
5mA≤IOUT≤500mA
(VOUT+2V)≤VIN ≤26V,IOUT=5mA
VIN= VOUT+5V, IOUT=500mA
10Hz-100kHz, IOUT=5mA
1000Hrs
IOUT=500mA
IOUT=50mA
0.6
tF≤100ms, RL=100Ω
60
VOUT≥-0.6V, RL=100Ω
-15
tF<1ms, RL=100Ω
-50
TYP
15.00
45
15
2
10
450
56
0.5
110
1.0
75
-30
-75
MAX
15.45
150
150
10
20
TYP
MAX
0.8
50
100
1.0
250
UNIT
V
mV
mV
mA
mA
µVrms
mV
V
mV
A
V
V
V
ON/OFF CONTROL (For 5 pins only)
PARAMETER
ON/OFF Threshold Voltage ON
ON/OFF Threshold Voltage OFF
ON/OFF Threshold Current
SYMBOL
VON
VOFF
ION/OFF
TEST CONDITIONS
IOUT≦0.5A
IOUT≦0.5A
VON/OFF=2.0V, IOUT=0.5A
UNISONIC TECHNOLOGIES CO., LTD
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MIN
2.0
UNIT
V
V
μA
5 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
V IN
UNREGULATED
INPUT
1
UTC LM2937-XX
CIN*
10 μF
3
VOUT
2
REGULATED
OUTPUT
COUT**
10μF
IQ
ON/OFF CONTROL APPLICATION
V IN
UNREGULATED
INPUT
CIN*
10 μF
4
UTC LM2937-XX
N/C
1
3
IQ
5
VOUT
2
ON/OFF
REGULATED
OUTPUT
COUT**
10μF
* 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 3Ω.
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QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
0.9
TJ=25℃
0.8
0.6
0.5
0.4
0.3
0.5
0.1
0
0
500
Output Voltage vs Temperature
20
Quiescent Current (mA)
5.02
5.00
4.98
4.96
4.94
0
40
80
Temperature (℃)
120
Quiescent Current vs Temperature
15
10
500mA
250mA
5
5mA
4.92
4.90
-40
0
80
40
Temperature (℃)
0
-40
120
Quiescent Current (mA)
60
0.5A
40
30
0.25A
20
0.05A
5
10 15
20
25
Input Voltage (V)
30
35
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40
80
Temperature (℃)
120
10
70
50
0
Quiescent Current vs Input Voltage
Quiescent Current vs Input Voltage
VOUT=5V
90 Ta=25℃
80
10
0
0
0.05A
RL =100Ω
5.04
100
0.25A
0.4
0.3
0.1
0
-40
100
200
300
400
Output Current(mA)
0.5A
0.6
0.2
5.06
Output Voltage (V)
0.7
0.2
5.08
Dropout Voltage vs Temperature
0.9
0.7
5.10
Quiescent Current (mA)
1.0
Dropout Voltage (V)
Dropout Voltage ( V)
0.8
Dropout Voltage vs Output Current
VIN=14V
9 VOUT=5V
TJ=25℃
8
7
6
5
4
3
2
1
0
0
100
300
400
200
Output Current (mA)
500
7 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
IOUT=50mA
VOUT=5 V
Ta=25℃
20
Output Voltage
Deviation (mV)
Output Voltage
Deviation (mV)
Load Transient Response
Line Transient Response
40
0
50
0
-50
Load
Current (A)
Input Voltage
Change (V)
-20
3V
0V
-10
0
10
20 30
Time (μs)
40
50
0
60
Ripple Rejection
-1
5.0
V IN=10V
V OUT=5 V
70 COUT=10μF
IOUT=50mA
4.0
Output Voltage (V)
Ripple Rejection (dB)
400
60
50
100
1K
10K
100K
Frequency (Hz)
4
5
6
5.0
6.0
Low Voltage Behavior
IOUT=500mA
VOUT=5 V
TJ=25℃
2.0
1M
Low Voltage Behavior
IOUT=500mA
TJ=25℃
15
VOUT=10V
10
8
V OUT=8 V
6
4
1.0
2.0
4.0
3.0
Input Voltage (V)
Low Voltage Behavior
IOUT=500mA
TJ=25℃
VOUT=15 V
12
VOUT=12 V
9
6
3
2
0
0
0
18
Output Voltage (V)
Output Voltage (V)
2
3
Time (μs)
3.0
0
10
12
1
1.0
40
14
0
2
4
6
10
8
Input Voltage (V)
12
14
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0
0
3
12
6
9
Input Voltage (V)
15
18
8 of 10
QW-R102-012.F
LM2937
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
Output at Voltage Extremes
Output Voltage (V)
10
RL =100Ω
VOUT=10V
8
VOUT=8V
VOUT=5V
2
VOUT=15V
12
VOUT=12V
8
4
0
0
-2
-30
RL =100Ω
16
6
4
Output at Voltage Extremes
20
Output Voltage (V)
12
-20 -10
0
20
10
Input Voltage (V)
30
-4
-30
40
VIN=14V
VOUT=5 V
COUT=10μF
IOUT=25mA
10
1.0
0.1
0.01
10
100
1K
10K 100K
Frequency (Hz)
1M
100
Equivalent Series Resistance (Ω)
Output Impedance (Ω)
Output Impedance
-20 -10
0
20
10
Input Voltage (V)
30
40
Output Capacitor ESR
VOUT=5V
COUT=10μF
10
1
STABLE
REGION
0.1
0.01
0
100
200
300 400
Output Current (mA)
500
Peak Output Current
1.5
Output Current (A)
VIN=14V
1.0
0.5
0
-40
0
40
80
Temperature (℃)
120
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9 of 10
QW-R102-012.F
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.
UNISONIC TECHNOLOGIES CO., LTD
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10 of 10
QW-R102-012.F
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