SPX3940AM3-3.3 Sipex Corporation, SPX3940AM3-3.3 Datasheet

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SPX3940AM3-3.3

Manufacturer Part Number
SPX3940AM3-3.3
Description
SPX3940AM3-3.31A Low Drop Out Voltage Regulator
Manufacturer
Sipex Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SPX3940AM3-3.3/TR
Manufacturer:
SIPEX/EXAR
Quantity:
20 000
FEATURES
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.
Date: 5/25/04
APPLICATIONS
Figure 1. Fixed Output Linear Regulator.
1% Output Accuracy SPX3940A
Guaranteed 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 LM3940
Standard SOT-223, TO-220
and TO-263 packages
Powering VGA & Sound Card
Automotive Electronics
LCD Monitors
Cordless Telephones
Power PC
TM
Supplies
V
IN
®
6.8µF
+
1A Low Dropout Voltage Regulator
SPX3940 1A Low Dropout Voltage Regulator
1
SPX3940
2
1
Fixed Output, Fast Response
Now Available in Lead Free Packaging
SMPS Post-Regulator
Laptop, Palmtop, and Note-
book Computer
High Efficiency Linear Power
Supplies
Portable Instrumentation
Constant Current Regulators
3
TYPICAL APPLICATIONS CIRCUIT
+
V
1
10µF
IN
3 Pin TO-263
SPX3940
GND
2
V
OUT
© Copyright 2004 Sipex Corporation
V
3
OUT
SPX3940
DESCRIPTION

Related parts for SPX3940AM3-3.3

SPX3940AM3-3.3 Summary of contents

Page 1

... Laptop, Palmtop, and Note- book Computer High Efficiency Linear Power Supplies Portable Instrumentation Constant Current Regulators TYPICAL APPLICATIONS CIRCUIT SPX3940 SPX3940 1A Low Dropout Voltage Regulator 1 SPX3940 SPX3940 3 Pin TO-263 GND OUT IN DESCRIPTION V OUT + 10µF © Copyright 2004 Sipex Corporation ...

Page 2

... Copyright 2004 Sipex Corporation RMS ...

Page 3

... Device 10µ 1.25 1.5 -40 -20 Figure 5. Ground Current vs Input Voltage SPX3940 1A Low Dropout Voltage Regulator 3 BLOCK DIAGRAM OUT R1 R2 GND 3.3V Device IL=4.3mA CL=10µF 0.25 0.5 0.75 1 1.25 1.5 IL (A) 3.3V Device 10µ 100 120 V (V) IN © Copyright 2004 Sipex Corporation ...

Page 4

... I =750mA LOAD SPX3940 1A Low Dropout Voltage Regulator 4 3.3V Device CL = 10µF 0.25 0.5 0.75 1 1.25 IL (A) 3.3V Device 10mA CL = 10µF - 100 120 Temperature (°C) 3.3V Device 750mA CL = 10µF - 100 Temperature (°C) © Copyright 2004 Sipex Corporation 1.5 120 ...

Page 5

... Figure 17. Enable Threshold vs Temperature EN SPX3940 1A Low Dropout Voltage Regulator 5 3.3V Device 10µ 100 120 Temperature (°C) 3.3V Device 10µ 100 120 Temperature (°C) 3.3V Device 750mA CL = 10µ 100 120 Temperature (°C) © Copyright 2004 Sipex Corporation ...

Page 6

... 7 95°C J Reliable operation is insured. SPX3940 SPX3940 1A Low Dropout Voltage Regulator 6 = 10V 5V 1.5A, IN OUT OUT = 1°C/W, θ = 2°C/W, and 7.5W. OUT OUT * (θ + θ + θ OUT + 10µF © Copyright 2004 Sipex Corporation ...

Page 7

... WITH PLATING - .420 - .625 .110 .066 .070 SPX3940 1A Low Dropout Voltage Regulator 7 PACKAGE: TO-263 SEATING PLANE See View C SEATING PLANE A1 L View BASE METAL SECTION B-B 3 PIN TO-263 © Copyright 2004 Sipex Corporation ...

Page 8

... SPX3940 1A Low Dropout Voltage Regulator 8 PACKAGE: 3 PIN TO-220 A B SEATING PLANE CHAMFER OPTIONAL BASE METAL CONTACT AREA 3 PIN TO-220 © Copyright 2004 Sipex Corporation ...

Page 9

... NOM MAX - 1. 0. 0.95 1.02 - 0.50 - 0.20 2.90 3.04 WITH PLATING - 2.64 1.30 1.40 0.50 0.60 - 8º SPX3940 1A Low Dropout Voltage Regulator 9 PACKAGE: 3 PIN SOT-23 SEE VIEW C VIEW A-A Gauge Plane Seating Plane L Ø L1 VIEW C A2 Seating Plane C SIDE VIEW b c SECTION B-B BASE METAL 3 PIN SOT-23 © Copyright 2004 Sipex Corporation ...

Page 10

... FAX: (408) 935-7600 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 herein; neither does it convey any license under its patent rights nor the rights of others. ...

Page 11

... SPX3940M3-3.3/TR 2% SPX3940M3-5.0 2% SPX3940M3-5.0/TR 2% Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX3940AM3-3.3/TR = standard; SPX3940AM3-L-3.3/TR = lead free /TR = Tape and Reel Pack quantity is 500 for TO-263 and 2,500 for SOT-23. Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office ...

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