Datasheet SPX2937M3-12, SPX2937M3-15, SPX2937M3-2.5, SPX2937M3-3.3, SPX2937M3-5.0 Datasheet (Sipex Corporation)
...Page 1
SPX2937
500mA Low Dropout Voltage Regulators
(PRELIMINARY INFORMATION)
FEATURES
Output Current 500mA at 15V, 12V, 10V, 8V, 5V, 3.3V and 2.5V
•
Internal Short Circuit Current Limit
•
Dropout Voltage 0.5V at 500mA Output
•
Extremely Tight Load and Line Regulation
•
Very Low Temperature Coefficient
•
Mirror Image Insertion Protection
•
Direct Replacement For LM2937 Socket
•
PRODUCT DESCRIPTION
The SPX2937 is a low power positive voltage regulator. The SPX2937 offers 500mA output current with a dropout voltage of only
0.5V and over temperature dropout is up to 1V. The quiescent current is 10mA at differential output of 5V and output current of
500mA. A higher quiescent current can exist when the device is in dropout mode (V
The regulator will automatically shut down to protect both the internal circuits and the load. This device also features short circuit and
thermal overload protection.
The SPX2937 is offered in a 3-pin TO-220 package compatible with other 5 volt and 3.3 volt regulators, TO-263 and SOT-223. This
device offers a variety of output voltages 15V, 12V, 10V, 8V, 5V, 3.3V and 2.5V. SPX2937 is a direct replacement to LM2937.
APPLICATIONS
Battery Powered Systems
•
Cordless Telephones
•
Automotive Electronics
•
Portable/ Palm Top / Notebook Computers
•
Portable Consumer Equipment
•
Portable Instrumentation
•
SMPS Post-Regulator
•
Voltage Reference
•
- V
IN
OUT
3V )
≤
SOT-223 (M3)
SPX2937
132
VINGND V
Top View
PIN CONNECTIONS
TO-263-3 (T)
SPX2937
1
2
OUT
V
GND V
OUT
Top View
TO-220-3 (U)
3
IN
SPX2937
1
23
V
GND
OUT
Front View
V
IN
Rev. 10/30/00
Page 2
SPX2937
ABSOLUTE MAXIMUM RATINGS
Power Dissipation..........................................Internally Limited Input Supply Voltage ................................................... +20V
Lead Temp. (Soldering, 10 Seconds) .............................. 260°C Feedback Input Voltage ..................................-1.5V to +20V
Storage Temperature Range ......................... -65°C to +150°C Shutdown Input Voltage..................................-0.3V to +20V
Operating Junction Temperature Range ........ -40°C to +125°C Error Comparator Output ................................ -0.3V to +20V
ESD Rating ............................................................2KV Min
ELECTRICAL CHARACTERISTICS
Boldface
PARAMETER CONDITIONS SPX2937-2.5
Output Voltage
Line Regulation
Load Regulation
type apply over the entire operating temperature range. All other specifications are T
Min Typ Max
5mA ≤I
V
+2V≤V
O
=5mA
I
O
50mA≤I
≤0.75A
O
≤
IN
500mA
≤
O
20V
2.42
2.38
7.5
2.5
at V
= VO + 5V, IO = 500mA, CO = 10 µF, unless otherwise specified. Limits in
IN
2.5 2.56
2.62
25
25
SPX2937-3.3
Min Typ Max
3.20
3.3 3.40
3.14
9.9
3.3
3.46
33
33
= 25°C.
A
SPX2937-5.0
Min Typ Max
4.85
4.75
5.0 5.15
15
5
5.25
50
50
SPX2937-8.0
Min Typ Max
7.76
8.0 8.24
7.60
24
8
8.40
80
80
UNITS
V
mV
mV
Dropout Voltage I
Quiescent
Current
Output Noise
Voltage
Ripple Rejection FO = 120Hz, 1V
Long Term
Stability
Short Circuit
Current
Maximum Line
Transient
Reverse Polarity
DC Input
Voltage
Reverse Polarity
Transient Input
Voltage
= 50 mA
L
I
= 500mA
L
V
+ 2V ≤V
O
= 5mA
I
O
V
IN=VO
I
=500mA
O
10Hz - 100kHz
I
= 5mA
O
I
= 500mA
O
10 13.2 20 32 mV/ 1000Hr
0.6 1.0
R
O
T ≤ 100ms
R
= 100Ω
O
R
= 100Ω
O
T ≤ 100ms
IN
+5V
= 100Ω
≤
20V
RMS
110
2
75 99 150 240
60
60
-15 -30
-50
250
0.5
1.0
10
10
54
75
-75
20
72 60
110
2
0.6
60
-15 -30 -15 -30 -15 -30 V
-50
250
0.5
1.0
10
10
20
72 60
54
1.0 1.0
75
-75
110
0.5
2
54
60
-50
10
72 60
0.60
75
-75
250
1.0
10
20
110
2
54
1.0
60
-50
0.5
10
72 dB
0.60
75 V
-75 V
250
1.0
10
20
mV
V
mA
mA
V
µ
RMS
A
Rev. 10/30/00
Page 3
SPX2937
ELECTRICAL CHARACTERISTICS
Boldface
type apply over the entire operating temperature range. All other specifications are T
PARAMETER CONDITIONS
Output Voltage
Line Regulation
5mA ≤I
V
O
IO=5mA
Load Regulation
5mA≤I
O
+2V≤V
≤
O
≤500mA
20V
≤
IN
500mA
at V
= VO + 5V, IO = 500mA, CO = 10 µF, unless otherwise specified. Limits in
IN
SPX2937-10
Min Typ Max
9.70
10.0 10.3
9.50
10.5
SPX2937-12
Min Typ Max
11.64
12.0 12.36
11.40
30 100 36
10 100 12
12.60
120
120
= 25°C.
A
SPX2937-15
Min Typ Max
14.55
15.0 15.45
14.25
45
15
15.75
150
150
UNITS
V
mV
mV
Dropout Voltage I
Quiescent Current
Output Noise
Voltage
Long Term
Stability
Short Circuit
= 50 mA
L
I
= 500mA
L
V
+ 2V ≤V
O
20V
≤
IN
IO = 5mA
V
+5V
IN=VO
I
=500mA
O
10Hz- 100kHz
I
= 5mA
O
51
0.5
2
10
250
1.0
10
20
110
0.5
2
10
300 360 450
63 44 56 mV/ 1000Hr
45
1.0
0.6
1.0
250
1.0
10
20
0.6
110
0.5
2
10
1.0
250
1.0
10
20
0.6
µ
mV
V
mA
mA
V
RMS
A
Current
Maximum Line
Transient
Reverse Polarity
DC Input Voltage
Reverse Polarity
Transient Input
R
= 100Ω
O
T ≤ 100ms
R
= 100Ω
O
R
= 100Ω
O
T ≤ 100ms
60
-15
-15
-50
75
-30
-30
-75
-15
-15
-50
75
60
-30
-30
-75
-15
60
-15
-50
75 V
-30
-30
-75 V
V
Voltage
APPLICATION HINTS
EXTERNAL CAPACITORS
The stability of the SPX2937 requires a 10µF or greater capacitor between output and ground. Oscillation could occur without this capacitor. Most
types of tantalum or aluminum electrolytic works fine here. For operations below -25°C solid tantalum is recommended since the many aluminum
types have electrolytes that freeze at about -30°C. The ESR of about 5Ω or less and resonant frequency above 500 kHz are the most important
parameters in the value of the capacitor. The capacitor value may be increased without limit.
At lower values of output current, less output capacitance is required for stability. For the currents below 10mA the value of the capacitor can be
reduced to 22µF and 0.15µF for 1mA.
Rev. 10/30/00
Page 4
SPX2937
ORDERING INFORMATION
Ordering No. Output Voltages Packages
SPX2937U3-2.5
SPX2937U3-3.3
SPX2937U3-5.0
SPX2937U3-8.0
SPX2937U3-10
SPX2937U3-12
SPX2937U3-15
SPX2937T3-2.5
SPX2937T3-3.3
SPX2937T3-5.0
SPX2937T3-8.0
SPX2937T3-10
SPX2937T3-12
SPX2937T3-15
SPX2937M3-2.5
SPX2937M3-3.3
SPX2937M3-5.0
SPX2937M3-8.0
SPX2937M3-10
SPX2937M3-12
SPX2937M3-15
2.5V 3 Lead TO-220
3.3V 3 Lead TO-220
5.0V 3 Lead TO-220
8.0V 3 Lead TO-220
10.0V 3 Lead TO-220
12.0V 3 Lead TO-220
15.0V 3 Lead TO-220
2.5V 3 Lead TO-263
3.3V 3 Lead TO-263
5.0V 3 Lead TO-263
8.0V 3 Lead TO-263
10.0V 3 Lead TO-263
12.0V 3 Lead TO-263
15.0V 3 Lead TO-263
2.5V 3 Lead SOT-223
3.3V 3 Lead SOT-223
5.0V 3 Lead SOT-223
8.0V 3 Lead SOT-223
10.0V 3 Lead SOT-223
12.0V 3 Lead SOT-223
15.0V 3 Lead SOT-223
SIGNAL PROCESSING EXCELLENCE
Corporation
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described
hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 10/30/00
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