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LMZ31520 ACTIVE 3V to 14.5V, 20A Step-Down Power Module in 15x16x5.8mm QFN Package This product offers a smaller-size QFN module and additional features such as light-load efficiency, power Good and remote sense.

Product details


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Package | Pins | Size

Surface Mount Module (EUL) 10 901 mm² 38.99 x 23.11 Through-Hole Module (EUK) 10 901 mm² 38.99 x 23.11 open-in-new Find other Buck modules (integrated inductor)


  • Up to 18 A Output Current
  • 12-V Input Voltage
  • Wide-Output Voltage Adjust
    (1.2 V to 5.5 V/(0.8 V to 1.8 V)
  • Efficiencies up to 95%
  • 195 W/in3 Power Density
  • On/Off Inhibit
  • Output Voltage Sense
  • Pre-Bias Startup
  • Under-Voltage Lockout
  • Auto-Track™ Sequencing
  • Margin Up/Down Controls
  • Output Over-Current Protection
    (Non-Latching, Auto-Reset)
  • Over-Temperature Protection
  • Operating Temperature: –40°C to 85°C
  • Point-of-Load Alliance (POLA™) Compatible
  • Safety Agency Approvals:
    UL/IEC/CSA-22.2 60950-1
    • Complex multi-voltage, multi-processor systems

POLA, TMS320 are trademarks of Texas Instruments.

open-in-new Find other Buck modules (integrated inductor)


The PTH12020 series of non-isolated power modules offers OEM designers a combination of high performance, small footprint, and industry leading features. As part of a new class of power modules, these products provide designers with the flexibility to power the most complex multi-processor digital systems using off-the-shelf catalog parts.

The series employs double-sided surface mount construction and provides highperformance step-down power conversion for up to 18A of output current from a 12-V input bus voltage. The output voltage of the W-suffix parts can be set to any value over the range, 1.2V to 5.5V. The L-suffix parts have an adjustment range of 0.8V to 1.8V. The output voltage is set using a single resistor.

This series includes Auto-Track™ sequencing. Auto-Track sequencing simplifies the task of supply voltage sequencing in a power system by enabling modules to track each other, or any external voltage, during power up and power down. Other operating features include an on/off inhibit, output voltage adjust (trim), margin up/down controls, and the ability to start up into an existing output voltage or prebias. For improved load regulation, an output voltage sense is provided. A non-latching over-current trip and overtemperature shutdown feature protects against load faults.

Target applications include complex multivoltage, multiprocessor systems that incorporate the industry's high-speed DSPs, microprocessors and bus drivers.

For start-up into a non-prebiased output, review page 14 in the Application Information section.

For start-up into a prebiased output, review page 18 in the Application Information section.

open-in-new Find other Buck modules (integrated inductor)

Technical documentation

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No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet 18 A 12-V Input Non-Isolated Wide-Output Modules datasheet (Rev. I) Mar. 11, 2009
Application note High-Temperatures Soldering Requirements for Plug-in Power, Surface-Mount Pdts (Rev. A) Aug. 13, 2009
Application note New power modules improve surface-mount manufacturability Jul. 14, 2005

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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Surface Mount Module (EUL) 10 View options
Through-Hole Module (EUK) 10 View options

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