Product details

Iout (Max) (A) 6 Vin (Min) (V) 4.5 Vin (Max) (V) 14.5 Vout (Min) (V) 1.2 Vout (Max) (V) 5.5 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Power Good, Remote Sense, Tracking Iq (Typ) (uA) 13400 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 780 Switching frequency (Min) (kHz) 480 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
Iout (Max) (A) 6 Vin (Min) (V) 4.5 Vin (Max) (V) 14.5 Vout (Min) (V) 1.2 Vout (Max) (V) 5.5 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Power Good, Remote Sense, Tracking Iq (Typ) (uA) 13400 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 780 Switching frequency (Min) (kHz) 480 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
B1QFN (RUQ) 47 135 mm² 9 x 15
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 9-mm × 15-mm × 2.8-mm package
  • Efficiencies Up To 96%
  • Wide-Output Voltage Adjust
    1.2 V to 5.5 V, with 1% Reference Accuracy
  • Optional Split Power Rail allows
    Input Voltage Down to 1.7 V
  • Adjustable Switching Frequency
    (480 kHz to 780 kHz)
  • Synchronizes to an External Clock
  • Adjustable Slow-Start
  • Output Voltage Sequencing and Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Over Temperature Protection
  • Pre-bias Output Start-up
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 13°C/W
  • Meets EN55022 Class B Emissions
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31506H With the WEBENCH® Power Designer
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 9-mm × 15-mm × 2.8-mm package
  • Efficiencies Up To 96%
  • Wide-Output Voltage Adjust
    1.2 V to 5.5 V, with 1% Reference Accuracy
  • Optional Split Power Rail allows
    Input Voltage Down to 1.7 V
  • Adjustable Switching Frequency
    (480 kHz to 780 kHz)
  • Synchronizes to an External Clock
  • Adjustable Slow-Start
  • Output Voltage Sequencing and Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Over Temperature Protection
  • Pre-bias Output Start-up
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 13°C/W
  • Meets EN55022 Class B Emissions
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31506H With the WEBENCH® Power Designer

The LMZ31506H power module is an easy-to-use integrated power solution that combines a 6-A DC-to-DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as 3 external components and eliminates the loop compensation and magnetics part selection process.

The 9×15×2.8 mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design with greater than 90% efficiency and excellent power dissipation with a thermal impedance of 13°C/W junction to ambient. The device delivers the full 6-A rated output current at 85°C ambient temperature without airflow.

The LMZ31506H offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering performance DSPs and FPGAs. Advanced packaging technology afford a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

The LMZ31506H power module is an easy-to-use integrated power solution that combines a 6-A DC-to-DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as 3 external components and eliminates the loop compensation and magnetics part selection process.

The 9×15×2.8 mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design with greater than 90% efficiency and excellent power dissipation with a thermal impedance of 13°C/W junction to ambient. The device delivers the full 6-A rated output current at 85°C ambient temperature without airflow.

The LMZ31506H offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering performance DSPs and FPGAs. Advanced packaging technology afford a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

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Technical documentation

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Type Title Date
* Data sheet LMZ31506H 6-A Power Module With 4.5V-14.5V Input datasheet (Rev. B) 11 Apr 2018
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
Application note Soldering Requirements for BQFN Packages (Rev. C) 05 Mar 2020
Application note Working With QFN Power Modules (Rev. A) 08 Jun 2017
Application note Adjusting LMZ3 Output Voltage with LM10010/1 11 Feb 2014
Application note Powering LMZ3 SIMPLE SWITCHER Power Modules From 3.3 V 02 Jul 2013
EVM User's guide Using the LMZ31506EVM, LMZ31503EVM, LMZ31506HEVM 02 Jul 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note Understanding and Applying Current-Mode Control Theory 19 Aug 2007
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 Jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 May 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMZ31506HEVM-692 — SIMPLE SWITCHER® 6A Synchronous Buck Power Module Evaluation Board

The Texas Instruments LMZ31506HEVM-692 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMZ31506H 6A SIMPLE SWITCHER® power module. The EVM incorporates a DC/DC converter with output voltage (5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V) and frequency (480 kHz to 780 kHz) (...)
Not available on TI.com
Simulation model

LMZ31506H PSpice Transient Model LMZ31506H PSpice Transient Model

Simulation model

LMZ31506H Unencrypted PSpice Transient Model LMZ31506H Unencrypted PSpice Transient Model

Simulation tool

PSPICE-FOR-TI PSpice® for TI design and simulation tool

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 (...)
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B1QFN (RUQ) 47 View options

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