LMZ14203EXT

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SNVS666E – JUNE 2010 – REVISED APRIL 2013

LMZ14203EXT 3A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage

for Military and Rugged Applications

Check for Samples: LMZ14203EXT

1

FEATURES

DESCRIPTION

2

•

– 55°C to 125°C Junction Temperature Range

The

LMZ14203EXT

SIMPLE

SWITCHER

power

•

Integrated Shielded Inductor

module is an easy-to-use step-down DC-DC solution

capable of driving up to 3A load with exceptional

•

Simple PCB Layout

power conversion efficiency, line and load regulation,

•

Flexible Startup Sequencing Using External

and output accuracy. The LMZ14203EXT is available

Soft-Start and Precision Enable

in an innovative package that enhances thermal

•

Protection Against Inrush Currents and Faults

performance

and

allows

for

hand

or

machine

such as Input UVLO and Output Short Circuit

soldering.

•

Single Exposed Pad and Standard Pinout for

The LMZ14203EXT 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

LMZ14203EXT only requires three external resistors

and ASICs

and four external capacitors to complete the power

•

Low output Voltage Ripple

solution. The LMZ14203EXT is a reliable and robust

•

Pin-to-pin Compatible Family:

design with the following protection features: thermal

shutdown, input under-voltage lockout, output over-

–

LMZ14203EXT/2EXT/1EXT

voltage protection, short-circuit protection, output

(42V Max 3A, 2A, 1A)

current limit, and allows startup into a pre-biased

–

LMZ12003/2/1 (20V Max 3A, 2A, 1A)

output.

A

single

resistor

adjusts

the

switching

–

LMZ14203/2/1 (42V Max 3A, 2A, 1A)

frequency up to 1 MHz.

•

Fully Enabled for Webench® Power Designer

ELECTRICAL SPECIFICATIONS

APPLICATIONS

•

18W Maximum Total Output Power

•

Point of Load Conversions from 12V and 24V

•

Up to 3A Output Current

Input Rail

•

Input Voltage Range 6V to 42V

•

Time Critical Projects

•

Output Voltage Range 0.8V to 6V

•

Space Constrained / High Thermal

•

Efficiency up to 90%

Requirement Applications

•

Negative Output Voltage Applications (See AN-

PERFORMANCE BENEFITS

2027 SNVA425)

•

Low Radiated Emissions / High Radiated

Immunity

•

Passes vibration Standard MIL-STD-883

Method 2007.2 Condition A JESD22–B103B

Condition 1

•

Passes Drop Standard MIL-STD-883 Method

2002.3 Condition B JESD22–B110 Condition B

Figure 1. Easy To Use 7 Pin Package

PFM 7 Pin Package

10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)

RoHS Compliant

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2013, 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.