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Buck modules (integrated inductor)

LMZ21700

ACTIVE

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

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Data sheet

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NEW 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.

LMZ21700

ACTIVE
Data sheet Order now

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 Iq (Typ) (uA) 17 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1250 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
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 Iq (Typ) (uA) 17 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1250 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LMZ21700 650-mA Nano Module With 17-V Maximum Input Voltage datasheet (Rev. D) PDF | HTML 24 Aug 2018
User guide LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide (Rev. B) PDF | HTML 10 Jan 2022
Application note Soldering Considerations for Power Modules (Rev. B) PDF | HTML 17 May 2021
Application note Practical Thermal Design With DC/DC Power Modules (Rev. A) 20 Nov 2019
Technical article FPGA power made simple: design steps 20 Nov 2017
White paper Benefits and trade-offs of various power-module package options 02 Aug 2017
Technical article SIMPLE SWITCHER® 25th anniversary 02 Feb 2015
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

LMZ21700EVM — LMZ21700 650mA SIMPLE SWITCHER® Nano Module Evaluation Board

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 (...)

User guide: PDF | HTML
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Simulation model

LMZ21700 PSpice Unencrypted Transient Model (Rev. A)

SNVM534A.ZIP (616 KB) - PSpice Model
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Simulation model

LMZ21700 Unencrypted PSpice Transient Model

SNVM773.ZIP (6 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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Design guide: PDF
Schematic: PDF
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Test report: PDF
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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
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