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LMZ14203 Scheda tecnica(PDF) 1 Page - Texas Instruments

Il numero della parte LMZ14203
Spiegazioni elettronici  LMZ14203 3A SIMPLE SWITCHER짰 Power Module with 42V Maximum Input Voltage
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Homepage  http://www.ti.com
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LMZ14203 Scheda tecnica(HTML) 1 Page - Texas Instruments

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LMZ14203
www.ti.com
SNVS632N – DECEMBER 2009 – REVISED MARCH 2013
LMZ14203 3A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage
Check for Samples: LMZ14203
1
KEY FEATURES
DESCRIPTION
2
Integrated Shielded Inductor
The LMZ14203 SIMPLE SWITCHER® power module
Simple PCB Layout
is an easy-to-use step-down DC-DC solution capable
of driving up to 3A load with exceptional power
Flexible Startup Sequencing Using External
conversion efficiency, line and load regulation, and
Soft-start and Precision Enable
output accuracy. The LMZ14203 is available in an
Protection Against Inrush Currents and Faults
innovative
package
that
enhances
thermal
such as Input UVLO and Output Short Circuit
performance
and
allows
for
hand
or
machine
–40°C to 125°C Junction Temperature Range
soldering.
Single Exposed Pad and Standard Pinout for
The LMZ14203 can accept an input voltage rail
Easy Mounting and Manufacturing
between 6V and 42V and deliver an adjustable and
highly accurate output voltage as low as 0.8V. The
Fast Transient Response for Powering FPGAs
LMZ14203 only requires three external resistors and
and ASICs
four external capacitors to complete the power
Low Output Voltage Ripple
solution. The LMZ14203 is a reliable and robust
Pin-to-pin Compatible Family:
design with the following protection features: thermal
shutdown, input under-voltage lockout, output over-
LMZ14203/2/1 (42V Max 3A, 2A, 1A)
voltage protection, short-circuit protection, output
LMZ12003/2/1 (20V Max 3A, 2A, 1A)
current limit, and allows startup into a pre-biased
Fully Enabled for Webench® Power Designer
output.
A
single
resistor
adjusts
the
switching
frequency up to 1 MHz.
APPLICATIONS
ELECTRICAL SPECIFICATIONS
Point of Load Conversions from 12V and 24V
Input Rail
18W Maximum Total Output Power
Time Critical Projects
Up to 3A Output Current
Space Constrained / High Thermal
Input voltage Range 6V to 42V
Requirement Applications
Output Voltage Range 0.8V to 6V
Negative Output Voltage Applications
Efficiency up to 90%
(See AN-2027 SNVA425)
PERFORMANCE BENEFITS
Operates at High Ambient Temperature with
no Thermal Derating
High Efficiency Reduces System Heat
Generation
Low Radiated Emissions (EMI) Complies with
EN55022 Class B Standard
Passes 10V/m Radiated Immunity EMI Test
Figure 1. Easy To Use 7 Pin Package
Standard EN61000 4-3
PFM 7 Pin Package
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 20°C/W, θJC = 1.9°C/W
RoHS Compliant
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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