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Power modules (integrated inductor)

LMZ21701

ACTIVE

3V to 17V, 1A Step-Down DC/DC Power Module in 3.5mm × 3.5mm Package

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Data sheet

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TPSM82903 ACTIVE 3-V to 17-V, 3-A, high-efficiency, low-IQ synchronous buck converter module with integrated inductor Higher efficiency with higher current, lower IQ, output discharge, and tracking in a smaller package.

LMZ21701

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 1 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6 Vout (min) (V) 0.9 Features EMI Tested, Enable, Light-load efficiency, Power good Operating temperature range (°C) -40 to 125 Type Module Duty cycle (max) (%) 100 Control mode Constant on-time (COT), DCS-Control Switching frequency (min) (kHz) 1250 Switching frequency (max) (kHz) 2500
Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 1 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6 Vout (min) (V) 0.9 Features EMI Tested, Enable, Light-load efficiency, Power good Operating temperature range (°C) -40 to 125 Type Module Duty cycle (max) (%) 100 Control mode Constant on-time (COT), DCS-Control Switching frequency (min) (kHz) 1250 Switching frequency (max) (kHz) 2500
USIP (SIL) 8 See data sheet
  • 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 Prebiased Loads
  • Power Good and Enable Pins
  • Seamless Transition to Power-Save Mode
  • Up to 1000 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 LMZ21701 With WEBENCH® Power Designer
  • 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 Prebiased Loads
  • Power Good and Enable Pins
  • Seamless Transition to Power-Save Mode
  • Up to 1000 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 LMZ21701 With WEBENCH® Power Designer

The LMZ21701 nano module is an easy-to-use step-down DC/DC solution capable of driving up to 1000-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.

The LMZ21701 nano module is an easy-to-use step-down DC/DC solution capable of driving up to 1000-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.

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Technical documentation

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Type Title Date
* Data sheet LMZ21701 1-A Nano Module With 17-V Maximum Input Voltage datasheet (Rev. E) PDF | HTML 29 Aug 2018
Application note Soldering Considerations for Power Modules (Rev. C) PDF | HTML 14 Mar 2024
User guide LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide (Rev. B) PDF | HTML 10 Jan 2022
Application note Practical Thermal Design With DC/DC Power Modules (Rev. A) 20 Nov 2019
White paper Benefits and trade-offs of various power-module package options 02 Aug 2017
User guide LMZ21701/LMZ21700 SIMPLE SWITCHER Nano Module Eval Board 05 Oct 2012
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

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

Evaluation board

LMZ21701EVM — LMZ21701 1A SIMPLE SWITCHER® Nano Module Evaluation Board

The LMZ21701 SIMPLE SWITCHER® nano module is an easy-to-use DC-DC solutions optimized for space constrained applications. The LMZ21701 EVM is capable of delivering up to 1A load with excellent power conversion efficiency, output voltage accuracy, line and load regulation and load transient (...)

User guide: PDF | HTML
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Simulation model

LMZ21701 PSpice Unencrypted Transient Model (Rev. A)

SNVM538A.ZIP (600 KB) - PSpice Model
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Simulation model

LMZ21701 TINA-TI Reference Design

SNVM989.TSC (183 KB) - TINA-TI Reference Design
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Simulation model

LMZ21701 TINA-TI Transient Spice Model

SNVM990.ZIP (57 KB) - TINA-TI Spice Model
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Simulation model

LMZ21701 Unencrypted PSpice Transient Model

SNVM774.ZIP (6 KB) - PSpice Model
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Reference designs

TIDA-010008 — Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications

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 (...)
Design guide: PDF
Schematic: PDF
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PMP4435 — 48Vin, 300W 1/8brick Digital Module with GaN FET Reference Design

The PMP4435 is a DC-DC isolated digital module with GaN mosfet reference design targeted for industrial and telecom applications. The DC input range is 36V-60V, with 12V typical and the output is 12V/5A. An digital controller UCD3138A is used in the design. The efficiency is up to 95.8% with good (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP10630 — Xilinx Kintex UltraScale XCKU040 FPGA Power Solution, 6W Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
USIP (SIL) 8 Ultra Librarian
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