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SPX3940U-2.5 Datasheet

  • SPX3940U-2.5

  • 1A Low Dropout Voltage Regulator Fixed Output, Fast Response

  • 11頁

  • SIPEX

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SPX3940
1A Low Dropout Voltage Regulator
Fixed Output, Fast Response
FEATURES
鈻?/div>
1% Output Accuracy SPX3940A
鈻?/div>
Guaranteed 1.5A Peak Current
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Low Quiescent Current
鈻?/div>
Low Dropout Voltage of 280mV at 1A
鈻?/div>
Extremely Tight Load and Line Regulation
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Extremely Fast Transient Response
鈻?/div>
Reverse-battery Protection
鈻?/div>
Internal Thermal Protection
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Internal Short Circuit Current Limit
鈻?/div>
Replacement for LM3940
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Standard SOT-223, TO-220
and TO-263 packages
APPLICATIONS
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Powering VGA & Sound Card
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Automotive Electronics
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LCD Monitors
鈻?/div>
Cordless Telephones
鈻?/div>
Power PC
TM
Supplies
SPX3940
3 Pin TO-263
1
2
3
V
IN
GND
V
OUT
Now Available in Lead Free Packaging
鈻?/div>
SMPS Post-Regulator
鈻?/div>
Laptop, Palmtop, and Note-
book Computer
鈻?/div>
High Efficiency Linear Power
Supplies
鈻?/div>
Portable Instrumentation
鈻?/div>
Constant Current Regulators
DESCRIPTION
The SPX3940 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 SPX3940 is offered in 3-pin SOT-223, TO-220 & TO-263 packages. For a 3A version, refer
to the SPX29300 data sheet.
TYPICAL APPLICATIONS CIRCUIT
V
IN
6.8碌F
+
1
SPX3940
2
3
+
10碌F
V
OUT
Figure 1. Fixed Output Linear Regulator.
Date: 5/25/04
SPX3940 1A Low Dropout Voltage Regulator
漏 Copyright 2004 Sipex Corporation
1

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