LMZ14203TZX-ADJ datasheet(1/18 Pages) NSC

Part #	LMZ14203TZX-ADJ

Description	3A SIMPLE SWITCHER짰Power Module with 42V Maximum Input Voltage

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Manufacturer	NSC [National Semiconductor (TI)]

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LMZ14203

June 10, 2010

3A SIMPLE SWITCHER® Power Module with 42V Maximum

Input Voltage

Easy to use 7 pin package

30107086

TO-PMOD 7 Pin Package

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

θ

JA = 20°C/W, θJC = 1.9°C/W

RoHS Compliant

Electrical Specifications

■ 18W maximum total output power

■ Up to 3A output current

■ Input voltage range 6V to 42V

■ Output voltage range 0.8V to 6V

■ Efficiency up to 90%

Key Features

■ Integrated shielded inductor

■ Simple PCB layout

■ Flexible startup sequencing using external soft-start and

precision enable

■ Protection against inrush currents and faults such as input

UVLO and output short circuit

■ – 40°C to 125°C junction temperature range

■ Single exposed pad and standard pinout for easy

mounting and manufacturing

■ Fast transient response for powering FPGAs and ASICs

■ Low output voltage ripple

■ Pin-to-pin compatible family:

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

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

■ Fully enabled for Webench® Power Designer

Applications

■ Point of load conversions from 12V and 24V input rail

■ Time critical projects

■ Space constrained / high thermal requirement applications

■ Negative output voltage applications (See AN-2027)

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 standard

EN61000 4-3

System Performance

Efficiency V

IN = 24V VOUT = 5.0V

30107036

Thermal derating curve

V

IN = 24V, VOUT = 5.0V,

30107037

Radiated Emissions (EN 55022 Class B)

from Evaluation Board

30107038

301070

www.national.com

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LMZ14203TZX-ADJ Datasheet(PDF) 1 Page - National Semiconductor (TI)

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