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LMZ23603

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3A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage

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Data sheet

LMZ23603

ACTIVE
Data sheet Order now

Product details

Iout (Max) (A) 3 Vin (Min) (V) 6 Vin (Max) (V) 36 Vout (Min) (V) 0.8 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Tracking Iq (Typ) (uA) 2600 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 950 Switching frequency (Min) (kHz) 650 Duty cycle (Max) (%) 83 Topology Buck, Inverting Buck-Boost, Synchronous Buck
Iout (Max) (A) 3 Vin (Min) (V) 6 Vin (Max) (V) 36 Vout (Min) (V) 0.8 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Tracking Iq (Typ) (uA) 2600 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 950 Switching frequency (Min) (kHz) 650 Duty cycle (Max) (%) 83 Topology Buck, Inverting Buck-Boost, Synchronous Buck
TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77
  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Frequency Synchronization Input (650 kHz to 950
    kHz)
  • Flexible Startup Sequencing Using External Soft-
    start, Tracking and Precision Enable
  • Protection Against Inrush Currents and Faults
    Such as Input UVLO and Output Short Circuit
  • Junction Temperature Range –40°C to
    125°C
  • Single Exposed Pad and Standard Pinout for
    Easy Mounting and Manufacturing
  • Fast Transient Response for Powering FPGAs
    and ASICs
  • Fully Enabled for WEBENCH Power Designer
  • Pin Compatible With
    LMZ22005/LMZ23605/LMZ22003
  • Performance Benefits
    • High Efficiency Reduces System Heat
      Generation
    • Tested to EN55022 Class B(1)
      • See AN-2125 (SNVA473) and layout for
        information on device under test.
      • VIN = 24 V, VO = 3.3 V, IO = 3 A
    • Low component count, only 5 external
      components
    • Low output voltage ripple
    • Uses PCB as heat sink, no airflow
      required
  • Electrical Specifications
    • 18-W maximum total output power
    • Up to 3-A output current
    • Input voltage range 6 V to 36 V
    • Output voltage range 0.8 V to 6 V
    • Efficiency up to 92%
  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Frequency Synchronization Input (650 kHz to 950
    kHz)
  • Flexible Startup Sequencing Using External Soft-
    start, Tracking and Precision Enable
  • Protection Against Inrush Currents and Faults
    Such as Input UVLO and Output Short Circuit
  • Junction Temperature Range –40°C to
    125°C
  • Single Exposed Pad and Standard Pinout for
    Easy Mounting and Manufacturing
  • Fast Transient Response for Powering FPGAs
    and ASICs
  • Fully Enabled for WEBENCH Power Designer
  • Pin Compatible With
    LMZ22005/LMZ23605/LMZ22003
  • Performance Benefits
    • High Efficiency Reduces System Heat
      Generation
    • Tested to EN55022 Class B(1)
      • See AN-2125 (SNVA473) and layout for
        information on device under test.
      • VIN = 24 V, VO = 3.3 V, IO = 3 A
    • Low component count, only 5 external
      components
    • Low output voltage ripple
    • Uses PCB as heat sink, no airflow
      required
  • Electrical Specifications
    • 18-W maximum total output power
    • Up to 3-A output current
    • Input voltage range 6 V to 36 V
    • Output voltage range 0.8 V to 6 V
    • Efficiency up to 92%

The LMZ23603 SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load. The LMZ23603 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ23603 can accept an input voltage rail between 6 V and 36 V and deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ23603 only requires two external resistors and three external capacitors to complete the power solution. The LMZ23603 is a reliable and robust design with the following protection features: thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, output current limit, and allows start-up into a prebiased output. The sync input allows synchronization over the 650-kHz to 950-kHz switching frequency range.

The LMZ23603 SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load. The LMZ23603 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ23603 can accept an input voltage rail between 6 V and 36 V and deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ23603 only requires two external resistors and three external capacitors to complete the power solution. The LMZ23603 is a reliable and robust design with the following protection features: thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, output current limit, and allows start-up into a prebiased output. The sync input allows synchronization over the 650-kHz to 950-kHz switching frequency range.
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Technical documentation

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Type Title Date
* Data sheet LMZ23603 3-A SIMPLE SWITCHER® Power Module With 36-V Maximum Input Voltage datasheet (Rev. J) PDF | HTML 31 Aug 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Design Summary LMZ1xxx and LMZ2xxx Power Module Family (Rev. B) 20 Jan 2016
Application note AN-2027 Inverting Application for the LMZ14203 SIMPLE SWITCHER Power Module (Rev. A) 06 May 2013
User guide AN-2085 LMZ23605/03, LMZ22005/03 Evaluation Board (Rev. B) 24 Apr 2013
User guide AN-2125 LMZ23605/03, LMZ22005/03 Demonstration 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
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

Design & development

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

Evaluation board

LMZ23603EVAL — 3A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage Evaluation Board

The LMZ23605/03, LMZ22005/03 evaluation boards are designed to be an easy-to-use platform to evaluate the full capabilities of this family of SIMPLE SWITCHER® power modules. The PCB construction has excellent thermal performance and includes extra locations for optional components that may not be (...)

User guide: PDF
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Simulation model

LMZ23603 Unencrypted PSpice Average Model Package (Rev. A)

SNVM204A.ZIP (47 KB) - PSpice Model
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Simulation model

LMZ23603 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM205A.ZIP (40 KB) - PSpice Model
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Simulation model

LMZ23603 TINA-TI Transient Spice Model

SNVM564.ZIP (17 KB) - TINA-TI Spice Model
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Simulation model

LMZ23603 TINA-TI STARTUP Reference Design

SNVM565.TSC (191 KB) - TINA-TI Reference Design
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Simulation model

LMZ23603 TINA-TI STEADY STATE Reference Design

SNVM566.TSC (121 KB) - TINA-TI Reference Design
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Simulation model

LMZ23603 TINA-TI Average Reference Design

SNVM630.TSC (57 KB) - TINA-TI Reference Design
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Simulation model

LMZ23603 TINA-TI Average Spice Model

SNVM631.ZIP (8 KB) - TINA-TI Spice Model
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Simulation model

LMZ23603 Unencrypted PSpice Average Model

SNVM783.ZIP (1 KB) - PSpice Model
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Simulation model

LMZ23603 Unencrypted PSpice Transient Model

SNVM784.ZIP (2 KB) - PSpice Model
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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 (...)
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