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SPX3940AM3-L-1.8

Description
Fixed Positive LDO Regulator, 1.8V, 0.55V Dropout, PDSO4, SOT-223, 4 PIN
CategoryPower/power management    The power supply circuit   
File Size199KB,11 Pages
ManufacturerMaxLinear Inc
Environmental Compliance
Download Datasheet Parametric View All

SPX3940AM3-L-1.8 Overview

Fixed Positive LDO Regulator, 1.8V, 0.55V Dropout, PDSO4, SOT-223, 4 PIN

SPX3940AM3-L-1.8 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerMaxLinear Inc
package instructionLSOP,
Reach Compliance Codecompliant
ECCN codeEAR99
Maximum drop-back voltage 10.55 V
Maximum input voltage16 V
Minimum input voltage2.8 V
JESD-30 codeR-PDSO-G4
JESD-609 codee3
length6.5024 mm
Humidity sensitivity level1
Number of functions1
Number of terminals4
Working temperatureTJ-Max125 °C
Working temperature TJ-Min-40 °C
Maximum output current 11 A
Maximum output voltage 11.845 V
Minimum output voltage 11.755 V
Nominal output voltage 11.8 V
Package body materialPLASTIC/EPOXY
encapsulated codeLSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height1.7 mm
surface mountYES
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch2.3 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3.505 mm
®
SPX3940
1A Low Dropout Voltage Regulator
Fixed Output, Fast Response
FEATURES
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
APPLICATIONS
Powering VGA & Sound Card
Automotive Electronics
LCD Monitors
Cordless Telephones
Power PC
TM
Supplies
SPX3940
3 Pin TO-263
1
2
3
V
IN
GND
V
OUT
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
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
6.8µF
+
1
SPX3940
2
3
+
10µF
V
OUT
Figure 1. Fixed Output Linear Regulator.
Date: 5/25/04
SPX3940 1A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
1

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