LMZ12003

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SNVS636M – DECEMBER 2009 – REVISED MARCH 2013

LMZ12003 3A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage

Check for Samples: LMZ12003

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FEATURES

DESCRIPTION

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•

Integrated Shielded Inductor

The LMZ12003 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 Capacitor and Precision Enable

output accuracy. The LMZ12003 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 LMZ12003 can accept an input voltage rail

Easy Mounting and Manufacturing

between 4.5V and 20V and deliver an adjustable and

highly accurate output voltage as low as 0.8V. The

•

Fast Transient Response for FPGAs and

LMZ12003 only requires three external resistors and

ASICs

four external capacitors to complete the power

•

Low Output Voltage Ripple

solution. The LMZ12003 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 Webench® Power Designer Enabled

output.

A

single

resistor

adjusts

the

switching

frequency up to 1 MHz.

APPLICATIONS

ELECTRICAL SPECIFICATIONS

•

Point of Load Conversions from 5V and 12V

Input Rail

•

18W Maximum Total Power Output

•

Time Critical Projects

•

Up to 3A Output Current

•

Space Constrained High Thermal Requirement

•

Input Voltage Range 4.5V to 20V

Applications

•

Output Voltage Range 0.8V to 6V

•

Negative Output Voltage Applications

•

Efficiency up to 92%

(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)

RoHS Compliant

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

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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.