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


Product details


Iout (Max) (A) 3 Vin (Min) (V) 6 Vin (Max) (V) 20 Vout (Min) (V) 0.8 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Tracking Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 2600 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 950 Switching frequency (Min) (kHz) 650 Switching frequency (Typ) (kHz) 812 Duty cycle (Max) (%) 83 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)


  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Frequency Synchronization Input (650 kHz to 950
  • Flexible Start-up 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
  • Electrical Specifications
    • 18-W Maximum Total Output Power
    • Up to 3-A Output Current
    • Input Voltage Range 6 V to 20 V
    • Output Voltage Range 0.8 V to 6 V
    • Efficiency up to 92%
  • Performance Benefits
    • High Efficiency Reduces System Heat
    • Tested To EN55022 Class B(1)
    • Low Component Count, Only 5 External
    • Low Output Voltage Ripple
    • Uses PCB as Heat Sink, No Airflow Required
open-in-new Find other Buck modules (integrated inductor)


The LMZ22003 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load. The LMZ22003 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ22003 can accept an input voltage rail between 6 V and 20 V and can deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ22003 only requires two external resistors and three external capacitors to complete the power solution. The LMZ22003 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 this device allows start-up into a prebiased output. The sync input allows synchronization over the 650- to 950-kHz switching frequency range.

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

Technical documentation

Design & development

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Hardware development

document-generic User guide

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 (...)

  • VIN = 6V to 36V
    • LMZ22005/03 limited to 20V
  • Enable UVLO = 5.7V
  • VOUT = 3.3V
  • IOUT = 0 to 5A
    • LMZ23603 and LMZ22003 limited to 3A
  • θJA = 12°C / W, θJC = 1.9°C/W
  • PCB designed on four layers
    • Inner are 2 oz
    • Outer are 3oz.
  • Measures 3.5 in. x 3.5 in. (8.9 cm x 8.9 cm)
  • 62mil (.062 inch) thick of FR4 laminate material
  • Max (...)

Design tools & simulation

SNVM285.ZIP (165 KB) - PSpice Model
SNVM286.ZIP (50 KB) - PSpice Model
SNVM775.ZIP (1 KB) - PSpice Model
SNVM776.ZIP (2 KB) - PSpice Model
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
  • (...)

CAD/CAE symbols

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TO-PMOD (NDW) 7 View options

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