LMZ12003

ACTIVE

3A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage

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Product details

Parameters

Iout (Max) (A) 3 Vin (Min) (V) 4.5 Vin (Max) (V) 20 Vout (Min) (V) 0.8 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (mA) 1 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 200 Switching frequency (Typ) (kHz) 800 Duty cycle (Max) (%) 92.5 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77 open-in-new Find other Buck modules (integrated inductor)

Features

  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Flexible Start-up Sequencing Using External Soft-
    start Capacitor 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 FPGAs and ASICs
  • Low Output Voltage Ripple
  • Pin-to-Pin Compatible With Devices:
    • LMZ14203/2/1 (42-V Maximum 3 A, 2 A, 1 A)
    • LMZ12003/2/1 (20-V Maximum 3 A, 2 A, 1 A)
  • Fully WEBENCH® Power Designer Enabled
  • Electrical Specifications
    • 18-W Maximum Total Power Output
    • Up to 3-A Output Current
    • Input Voltage Range 4.5 V to 20 V
    • Output Voltage Range 0.8 V to 6 V
    • Efficiency up to 92%
  • Performance Benefits
    • Operates at High Ambient Temperature With
      No Thermal Derating
    • High Efficiency Reduces System Heat
      Generation
    • Low Radiated Emissions (EMI) Tested to
      EN55022 Class B Standard
    • Passes 10-V/m Radiated Immunity EMI Test
      Standard EN61000 4-3
open-in-new Find other Buck modules (integrated inductor)

Description

The LMZ12003 SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ12003 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ12003 can accept an input voltage rail between 4.5 V and 20 V and can deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ12003 only requires three external resistors and four external capacitors to complete the power solution. The LMZ12003 is a reliable and robust design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short circuit protection, output current limit, and this device allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.

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

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Type Title Date
* Datasheet LMZ12003 3-A Simple Switcher® Power Module with 20-V Maximum Input Voltage datasheet (Rev. O) Aug. 31, 2015
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 2018
White papers Comparing the Merits of Integrated Power Modules versus Discrete Regulators (Rev. B) Sep. 15, 2016
Application notes Design Summary LMZ1xxx and LMZ2xxx Power Module Family (Rev. B) Jan. 20, 2016
Application notes AN-2027 Inverting Application for the LMZ14203 SIMPLE SWITCHER Power Module (Rev. A) May 06, 2013
User guides AN-2024 LMZ1420x / LMZ1200x Evaluation Board (Rev. E) Apr. 24, 2013
User guides LMZ12003 3A Demo Board SIMPLE SWITCHER� Power Module Quick Start Guide (Rev. B) Apr. 24, 2013
Application notes AN-2026 Effect of PCB Design on Thermal Performance of SIMPLE SWITCHER Modules (Rev. A) Apr. 23, 2013
Application notes AN-2052 Texas Instruments SIMPLE SWITCHER Power Modules and EMI (Rev. C) Apr. 23, 2013
Application notes AN-2078 PCB Layout for Texas Instruments SIMPLE SWITCHER Power Modules (Rev. A) Apr. 23, 2013
Application notes AN-2200 Precision Current Limiting with the LMP8646 and LMZ12003 (Rev. A) Apr. 23, 2013
More literature SIMPLE SWITCHER® Power Modules for Broadcast Video Apr. 02, 2012
More literature SIMPLE SWITCHER® Power Modules for Communications Infrastructure Apr. 02, 2012
More literature SIMPLE SWITCHER® Power Modules for Factory Automation Apr. 02, 2012
More literature SIMPLE SWITCHER® Power Modules for Medical Apr. 02, 2012
More literature SIMPLE SWITCHER® Power Modules for Military Apr. 02, 2012
More literature SIMPLE SWITCHER® Power Modules for Test and Measurement Apr. 02, 2012
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations Jul. 12, 2005

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$20.00
Description

The SIMPLE SWITCHER power module demonstration board is optimized for peak performance and small footprint. The output voltage and fast transient response can be adjusted by replacing the small passive components. The good thermal performance of the power modules is showcased using a 2-layer 1oz (...)

Features
  • Integrated shielded inductor (inside module)
  • VIN = 4.5V to 20V
  • Precision enable UVLO - 6V
  • 1.8V output (output voltage is adjustable by changing 1 or 2 resistors)
  • Operates at full load up to 80 °C ambient at 12V input
  • Efficiency
    • Up to 92% (LMZ14203/LMZ12003)
  • Thermal performance
    • θJA = 20°C/W
    • θJC = 1.9°C/W
EVALUATION BOARDS Download
document-generic User guide
$25.00
Description

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 (...)

Features
  • Integrated shielded inductor (inside module)
  • VIN = 4.5V to 20V
  • Precision enable UVLO - 4.5V
  • 1.8V output (output voltage is adjustable by changing 1 or 2 resistors)
  • Operates at full load up to 80°C ambient at 12V input
  • Efficiency
    • Up to 92% (LMZ14203/LMZ12003)
  • Thermal performance
    • θJA = 20°C/W
    • θJC = 1.9°C/W
  • Uses 0805 (...)

Design tools & simulation

SIMULATION MODELS Download
SNVM155.ZIP (239 KB) - PSpice Model
SIMULATION MODELS Download
SNVM752.ZIP (3 KB) - PSpice Model
CALCULATION TOOLS Download
LMZ1x/EXT Thermal Resistance Estimate
LMZ1X-LMZXEXTDESIGN-CALC

CAD/CAE symbols

Package Pins Download
TO-PMOD (NDW) 7 View options

Ordering & quality

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