3V to 17V, 0.65A Step-Down DC/DC Power Module in 3.5mm × 3.5mm Package


Product details


Iout (Max) (A) 0.65 Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.9 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Light Load Efficiency, Power Good Operating temperature range (C) -40 to 125 Iq (Typ) (mA) 0.017 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1250 Switching frequency (Typ) (kHz) 2000 Duty cycle (Max) (%) 100 Type Module Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)


  • Integrated Inductor
  • Miniature 3.5 mm × 3.5 mm × 1.75 mm Package
  • 35-mm² Solution Size (Single Sided)
  • –40°C to 125°C Junction Temperature Range
  • Adjustable Output Voltage
  • Integrated Compensation
  • Adjustable Soft-Start Function
  • Starts into Pre-Biased Loads
  • Power Good and Enable Pins
  • Seamless Transition to Power-Save Mode
  • Up to 650 mA Output Current
  • Input Voltage Range 3 V to 17 V
  • Output Voltage Range 0.9 V to 6 V
  • Efficiency up to 95 %
  • 1.5-µA Shutdown Current
  • 17-µA Quiescent Current
  • Create a Custom Design Using the LMZ21700 With WEBENCH® Power Designer

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


The LMZ21700 Nano Module is an easy-to-use step-down DC/DC solution capable of driving up to 650-mA load in space-constrained applications. Only an input capacitor, an output capacitor, a soft-start capacitor, and two resistors are required for basic operation.

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

Technical documentation

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Type Title Date
* Datasheet LMZ21700 650-mA Nano Module With 17-V Maximum Input Voltage datasheet (Rev. D) Aug. 24, 2018
Application notes Practical Thermal Design With DC/DC Power Modules (Rev. A) Nov. 20, 2019
Application notes Soldering Considerations for Power Modules Nov. 26, 2018
Technical articles FPGA power made simple: design steps Nov. 20, 2017
White papers Benefits and trade-offs of various power-module package options Aug. 02, 2017
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. A) Mar. 28, 2017
Technical articles SIMPLE SWITCHER® 25th anniversary Feb. 01, 2015
User guides LMZ21701/LMZ21700 SIMPLE SWITCHER Nano Module Eval Board (Rev. A) Oct. 27, 2014
Selection guides Power Management for Xilinx FPGAs Feb. 04, 2014
User guides LMZ21701/LMZ21700 SIMPLE SWITCHER Nano Module Eval Board Oct. 05, 2012
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations Jul. 12, 2005
Application notes AN-643 EMI/RFI Board Design (Rev. B) May 03, 2004

Design & development

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Hardware development

document-generic User guide

The LMZ21700 SIMPLE SWITCHER® nano module is an easy-to-use DC/DC solutions optimized for space constrained applications. The LMZ21700EVM is capable of delivering up to 650 mA load with excellent power conversion efficiency, output voltage accuracy, line and load regulation and load transient (...)

  • Vin=5V to 17V
  • Vout=3.3V (default setting)
  • 650mA max load

Design tools & simulation

SNVM534.ZIP (594 KB) - PSpice Model
SNVM773.ZIP (6 KB) - PSpice Model

Reference designs

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TIDA-010008 — This reference design features multiple approaches for  protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
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Xilinx Kintex UltraScale XCKU040 FPGA Power Solution, 6W Reference Design
PMP10630 The PMP10630 reference design is a complete high density power solution for Xilinx® Kintex® UltraScale™ XCKU040 FPGA. This design uses an optimal combination of SIMPLE SWITCHER® modules and LDOs to provide all the necessary voltage rails in a small solution size of 36 x 43 mm (1.4 (...)
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2.2MHz Switching, Synchronous Split Supply Reference Design for 12V Battery with all Protections
PMP10651 PMP10651 is a low noise, multi-output SMPS design where LM53603 is used in Inverting Buck-Boost Fly buck topology to generate positive and negative supply needed in multiple noise sensitive applications such as powering High Speed Video Amplifier, RF amplifier, Precision Low noise amplifier (...)
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FPGA Power Made Simple

A discussion of key design considerations for designing a power supply for an FPGA, with a focus on power module solutions. Topics include system architecture,

Posted: 23-Jan-2015
Duration: 53:09

Visit www.simpleswitcher.com for more information

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