Product details

Iout (Max) (A) 4 Vin (Min) (V) 2.95 Vin (Max) (V) 5.5 Vout (Min) (V) 0.8 Vout (Max) (V) 5 Soft start Adjustable Features EMI Tested, Enable, Overcurrent protection, Tracking Operating temperature range (C) -55 to 125 Iq (Typ) (uA) 1700 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1160 Switching frequency (Min) (kHz) 700 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
Iout (Max) (A) 4 Vin (Min) (V) 2.95 Vin (Max) (V) 5.5 Vout (Min) (V) 0.8 Vout (Max) (V) 5 Soft start Adjustable Features EMI Tested, Enable, Overcurrent protection, Tracking Operating temperature range (C) -55 to 125 Iq (Typ) (uA) 1700 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1160 Switching frequency (Min) (kHz) 700 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77
  • Integrated Shielded Inductor
  • Flexible Start-up Sequencing Using External Soft Start, Tracking, and Precision Enable
  • Protection Against In-Rush Currents and Faults Such as Input UVLO and Output Short-Circuit
  • Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
  • Pin-to-Pin Compatible With
    • LMZ10503EXT (3-A/15-W Maximum)
    • LMZ10505EXT (5-A/25-W Maximum)
  • Fast Transient Response for Powering FPGAs and ASICs
  • Electrical Specifications
    • 20-W Maximum Total Output Power
    • Up to 4-A Output Current
    • Input Voltage Range 2.95 V to 5.5 V
    • Output Voltage Range 0.8 V to 5 V
    • ±1.63% Feedback Voltage Accuracy Over Temperature
  • Performance Benefits
    • Operates at High Ambient Temperatures
    • Low Radiated Emissions (EMI) Tested to EN55022 Class B Standard
    • Passes 10-V/m Radiated Immunity EMI Tested to Standard EN61000 4-3
    • Passes Vibration Standard
      • MIL-STD-883 Method 2007.2 Condition A
      • JESD22-B103B Condition 1
    • Passes Drop Standard
      • MIL-STD-883 Method 2002.3 Condition B
      • JESD22-B110 Condition B
  • Create a Custom Design Using the LMZ10504 With the WEBENCH® Power Designer
  • Integrated Shielded Inductor
  • Flexible Start-up Sequencing Using External Soft Start, Tracking, and Precision Enable
  • Protection Against In-Rush Currents and Faults Such as Input UVLO and Output Short-Circuit
  • Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
  • Pin-to-Pin Compatible With
    • LMZ10503EXT (3-A/15-W Maximum)
    • LMZ10505EXT (5-A/25-W Maximum)
  • Fast Transient Response for Powering FPGAs and ASICs
  • Electrical Specifications
    • 20-W Maximum Total Output Power
    • Up to 4-A Output Current
    • Input Voltage Range 2.95 V to 5.5 V
    • Output Voltage Range 0.8 V to 5 V
    • ±1.63% Feedback Voltage Accuracy Over Temperature
  • Performance Benefits
    • Operates at High Ambient Temperatures
    • Low Radiated Emissions (EMI) Tested to EN55022 Class B Standard
    • Passes 10-V/m Radiated Immunity EMI Tested to Standard EN61000 4-3
    • Passes Vibration Standard
      • MIL-STD-883 Method 2007.2 Condition A
      • JESD22-B103B Condition 1
    • Passes Drop Standard
      • MIL-STD-883 Method 2002.3 Condition B
      • JESD22-B110 Condition B
  • Create a Custom Design Using the LMZ10504 With the WEBENCH® Power Designer

The LMZ10504EXT power module is a complete, easy-to-use, DC-DC solution capable of driving up to a 4-A load with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. The LMZ10504EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ10504EXT can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. 1-MHz fixed-frequency PWM switching provides a predictable EMI characteristic. Two external compensation components can be adjusted to set the fastest response time, while allowing the option to use ceramic or electrolytic output capacitors. Externally programmable soft-start capacitor facilitates controlled start-up. The LMZ10504EXT is a reliable and robust solution with the following features: lossless cycle-by-cycle peak current limit to protect for overcurrent or short-circuit fault, thermal shutdown, input undervoltage lockout, and prebiased start-up. The LMZ10504EXT is also fully-enabled for WEBENCH® and Power Designer tools.

The LMZ10504EXT power module is a complete, easy-to-use, DC-DC solution capable of driving up to a 4-A load with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. The LMZ10504EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ10504EXT can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. 1-MHz fixed-frequency PWM switching provides a predictable EMI characteristic. Two external compensation components can be adjusted to set the fastest response time, while allowing the option to use ceramic or electrolytic output capacitors. Externally programmable soft-start capacitor facilitates controlled start-up. The LMZ10504EXT is a reliable and robust solution with the following features: lossless cycle-by-cycle peak current limit to protect for overcurrent or short-circuit fault, thermal shutdown, input undervoltage lockout, and prebiased start-up. The LMZ10504EXT is also fully-enabled for WEBENCH® and Power Designer tools.

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LMZ10503 ACTIVE 5.5V, 3A Power Module in Leaded Surface Mount TO Package Check out the LMZ10503 as an alternative without MIL specification.
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Technical documentation

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Type Title Date
* Data sheet LMZ10504EXT 4-A Power Module With 5.5-V Maximum Input Voltage for Demanding and Rugged Applications datasheet (Rev. J) 15 Apr 2019
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) 22 Mar 2017
Application note AN-2013 LMZ1050x/LMZ1050xEXT SIMPLE SWITCHER Power Module (Rev. E) 02 Feb 2017
Application note Design Summary LMZ1xxx and LMZ2xxx Power Module Family (Rev. B) 20 Jan 2016
Application note AN-2013 LMZ1050x/LMZ1050xEXT SIMPLE SWITCHER Power Module (Rev. D) 17 Sep 2015
Application note AN-2027 Inverting Application for the LMZ14203 SIMPLE SWITCHER Power Module (Rev. A) 06 May 2013
User guide AN-2074 LMZ1050xEXT Evaluation Board (Rev. B) 24 Apr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note AN-2026 Effect of PCB Design on Thermal Performance of SIMPLE SWITCHER Modules (Rev. A) 23 Apr 2013
Application note AN-2052 Texas Instruments SIMPLE SWITCHER Power Modules and EMI (Rev. C) 23 Apr 2013
Application note AN-2078 PCB Layout for Texas Instruments SIMPLE SWITCHER Power Modules (Rev. A) 23 Apr 2013
Design guide SIMPLE SWITCHER® Design Guide 11 Apr 2011
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

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Evaluation board

LMZ10504EXTEVAL — Simple Switcher® Extended Temp Power Module 5.5Vin, 4A Eval Board

The SIMPLE SWITCHER power module evaluation board is optimized for peak performance and increased flexibility. By incorporating additional ceramic and an aluminum filter capacitor, the power module EVAL board demonstrates the low output ripple, fast transient response, and low conducted and radiated (...)

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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 (...)
Calculation tool

LMZ1X-LMZXEXTDESIGN-CALC — LMZ1x/EXT Thermal Resistance Estimate

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