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PDF SPX2940 Data sheet ( Hoja de datos )
| Número de pieza | SPX2940 | |
| Descripción | Low Dropout Voltage Regulator | |
| Fabricantes | Sipex Corporation | |
| Logotipo |  |
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®
SPX2940
1A Low Dropout Voltage Regulator
Fixed Output, Fast Response
FEATURES
■ Guaranted 1.5A Peak Current
■ Low Quiescent Current
■ Low Dropout Voltage of 280mV at 1A
■ Extremely Tight Load and Line Regulation
■ Extremely Fast Transient Response
■ Reverse-battery Protection
■ Internal Thermal Protection
■ Internal Short Circuit Current Limit
■ Replacement for LM2940, MIC2940A,
AS2940
■ Standard TO-220 and TO-263 packages
SPX2940
3 Pin TO-263
1 23
VIN GND VOUT
Now Available in Lead Free Packaging
APPLICATIONS
■ Powering VGA & Sound Card
■ LCD Monitors
■ USB Power Supply
■ Power PCTM Supplies
■ SMPS Post-Regulator
■ PDA or Notebook Computer
■ High Efficiency Linear Power Supplies
■ Portable Instrumentation
■ Constant Current Regulators
■ Cordless Telephones
■ Automotive Electronics
DESCRIPTION
The SPX2940 is a 1A, accurate voltage regulators with a low drop out voltage of 280mV (typical)
at 1A. These regulators are specifically designed for low voltage applications that require a low
dropout voltage and a fast transient response. They are fully fault protected against over-current,
reverse battery, and positive and negative voltage transients.
The SPX2940 is offered in 3-pin TO-220 & TO-263 packages. For a 3A version, refer to the
SPX29300 data sheet.
TYPICAL APPLICATIONS CIRCUIT
VIN
6.8µF+
1 SPX2940 3
2
VOUT
+10µF
Figure 1. Fixed Output Linear Regulator.
Date: 5/25/04
SPX2940 1A Low Dropout Voltage Regulator
1
© Copyright 2004 Sipex Corporation
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
52.0
50.0
48.0
46.0
44.0
42.0
40.0
3.3V Device
VIN = 4.3V
38.0
IL = 1.5A
CL = 10µF
36.0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 12. Ground Current vs Temperature at ILOAD= 1.5A
100
95
90
85
80
75
70
-40
3.3V Device
VIN = 3.2V
IL = 1.5A
CL = 10µF
-20 0
20 40 60 80
Temperature (°C)
100 120
Figure 13. Ground Current vs Temperature in Dropout
at ILOAD=1.5A
350
330
310
290
270
250
230
210
3.3V Device
IL = 750mA
190 CL = 10µF
170
150
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
Figure 14. Dropout Voltage vs Temperature at
ILOAD= 750mA
500
480
460
440
420
400
380 3.3V Device
IL = 750A
360 CL = 10µF
340
320
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 15. Dropout Voltage vs Temperature at
ILOAD= 1.5mA
35
30
25
20
15
10 3.3V Device
VIN = 3.2V
5
IL = 750mA
CL = 10µF
0
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
Figure 16. Enable Current vs Temperature for VEN= 16V
2.00
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
1.10
1.00
-40
-20
0
3.3V Device
VIN = 3.2V
IL = 750mA
CL = 10µF
20 40 60 80
Temperature (°C)
100 120
Figure 17. Enable Threshold vs Temperature
Date: 5/25/04
SPX2940 1A Low Dropout Voltage Regulator
5
© Copyright 2004 Sipex Corporation
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SPX2940.PDF ] | |
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