LMZ21700

ACTIVE

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

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Product details

Parameters

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) (uA) 17 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1250 Switching frequency (Typ) (kHz) 2000 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Features

  • 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)

Description

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)
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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 note Practical Thermal Design With DC/DC Power Modules (Rev. A) Nov. 20, 2019
Application note Soldering Considerations for Power Modules Nov. 26, 2018
Technical articles FPGA power made simple: design steps Nov. 20, 2017
White paper Benefits and trade-offs of various power-module package options Aug. 02, 2017
Technical articles SIMPLE SWITCHER® 25th anniversary Feb. 01, 2015
User guide LMZ21701/LMZ21700 SIMPLE SWITCHER Nano Module Eval Board (Rev. A) Oct. 27, 2014
User guide 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 note AN-643 EMI/RFI Board Design (Rev. B) May 03, 2004

Design & development

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Hardware development

EVALUATION BOARD Download
20
Description

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 (...)

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

Design tools & simulation

SIMULATION MODEL Download
SNVM534A.ZIP (616 KB) - PSpice Model
SIMULATION MODEL Download
SNVM773.ZIP (6 KB) - PSpice Model
SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications
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 (...)
document-generic Schematic
REFERENCE DESIGNS Download
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 (...)
document-generic Schematic
REFERENCE DESIGNS Download
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 (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
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Ordering & quality

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  • Ongoing reliability monitoring

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