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LMZ14203 bảng dữ liệu(PDF) 1 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 6V to 42V, 3A Power Module in Leaded SMT-TO Package
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LMZ14203 bảng dữ liệu(HTML) 1 Page - Texas Instruments

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LMZ14203
SNVS632R – DECEMBER 2009 – REVISED OCTOBER 2015
LMZ14203 SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded SMT-TO Package
1 Features
2 Applications
1
Integrated Shielded Inductor
Point of Load Conversions From 12-V and 24-V
Input Rail
Simple PCB Layout
Time-Critical Projects
Flexible Start-Up Sequencing Using External Soft-
Start and Precision Enable
Space Constrained and High Thermal
Requirement Applications
Protection Against Inrush Currents and Faults
Such as Input UVLO and Output Short Circuit
Negative Output Voltage Applications
(See AN-2027 SNVA425)
–40°C to 125°C Junction Temperature Range
Single Exposed Pad and Standard Pinout for Easy
3 Description
Mounting and Manufacturing
The LMZ14203 SIMPLE SWITCHER power module
Fast Transient Response for Powering FPGAs
is an easy-to-use step-down DC-DC solution that can
and ASICs
drive
up
to
3-A
load
with
exceptional
power
Low Output Voltage Ripple
conversion efficiency, line and load regulation, and
output accuracy. The LMZ14203 is available in an
Pin-to-Pin Compatible Family:
innovative
package
that
enhances
thermal
LMZ1420x (42 V Maximum 3 A, 2 A, 1 A)
performance
and
allows
for
hand
or
machine
LMZ1200x (20 V Maximum 3 A, 2 A, 1 A)
soldering.
Fully Enabled for WEBENCH® Power Designer
The LMZ14203 can accept an input voltage rail
Electrical Specifications
between 6 V and 42 V and deliver an adjustable and
highly accurate output voltage as low as 0.8 V. The
18-W Maximum Total Output Power
LMZ14203 only requires three external resistors and
Up to 3-A Output Current
four external capacitors to complete the power
Input Voltage Range 6 V to 42 V
solution. The LMZ14203 is a reliable and robust
design with the following protection features: thermal
Output Voltage Range 0.8 V to 6 V
shutdown, input UVLO, output overvoltage protection,
Efficiency up to 90%
short-circuit protection, output current limit, and
Performance Benefits
allows start-up into a prebiased output. A single
Operates at High Ambient Temperature With
resistor adjusts the switching frequency up to 1 MHz.
No Thermal Derating
Device Information(1)(2)
High Efficiency Reduces System Heat
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Generation
LMZ14203
TO-PMOD (7)
10.16 mm × 9.85 mm
Low Radiated Emissions (Electromagnetic
(1) For all available packages, see the orderable addendum at
Interference [EMI]) Tested With EN55022
the end of the data sheet.
Class B Standard
(2) Peak reflow temperature equals 245°C. See SNAA214 for
Passes 10-V/m Radiated Immunity EMI Test
more details.
Standard EN61000 4-3
Simplified Application Schematic
Efficiency 12-V Input at 25°C
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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