LMZ14203TZX-ADJ/NOPB

The LMZ14203 SIMPLE SWITCHER power module
is an easy-to-use step-down DC-DC solution that can
drive up to 3-A load with exceptional power
conversion efficiency, line and load regulation, and
output accuracy. The LMZ14203 is available in an
innovative package that enhances thermal
performance and allows for hand or machine
soldering.
The LMZ14203 can accept an input voltage rail
between 6 V and 42 V and deliver an adjustable and
highly accurate output voltage as low as 0.8 V. The
LMZ14203 only requires three external resistors and
four external capacitors to complete the power
solution. The LMZ14203 is a reliable and robust
design with the following protection features: thermal
shutdown, input UVLO, output overvoltage protection,
short-circuit protection, output current limit, and
allows start-up into a prebiased output. A single
resistor adjusts the switching frequency up to 1 MHz.

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    SPECIFICATION

    • Integrated Shielded Inductor & Simple PCB
    Layout
    • Flexible Start-Up Sequencing Using External SoftStart 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:
    – LMZ1420x (42 V Maximum 3 A, 2 A, 1 A)
    – LMZ1200x (20 V Maximum 3 A, 2 A, 1 A)
    • Fully Enabled for WEBENCH® Power Designer
    • Electrical Specifications
    – 18-W Maximum Total Output Power
    – Up to 3-A Output Current
    – Input Voltage Range 6 V to 42 V
    – Output Voltage Range 0.8 V to 6 V
    – Efficiency up to 90%
    • Performance Benefits
    – Operates at High Ambient Temperature With
    No Thermal Derating
    – High Efficiency Reduces System Heat
    Generation
    – Low Radiated Emissions (Electromagnetic
    Interference [EMI]) Tested With EN55022
    Class B Standard
    – Passes 10-V/m Radiated Immunity EMI Test
    Standard EN61000 4-3
    • Create a Custom Design Using the LMZ14203
    With the WEBENCH® Power Designer