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Power modules (integrated inductor)

LMZ20502

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2.7V to 5.5V, 2A High Density Nano Module

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Data sheet

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TPSM82822 ACTIVE 5.5-V input, 2-A step-down module with integrated inductor in 2 x 2.5 x 1.1-mm μSIP package Newer solution with smaller BOM size, lower Iq, higher voltage accuracy
TPSM828512 ACTIVE 2.7-V to 6-V, 2-A low-noise step-down module with integrated inductor in QFN package Smaller QFN package

LMZ20502

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck, Synchronous Buck Type Module Iout (max) (A) 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0.8 Vout (max) (V) 3.6 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3200 Features EMI Tested, Enable, Light Load Efficiency, Power good Control mode current mode Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck, Synchronous Buck Type Module Iout (max) (A) 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0.8 Vout (max) (V) 3.6 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3200 Features EMI Tested, Enable, Light Load Efficiency, Power good Control mode current mode Duty cycle (max) (%) 100
USIP (SIL) 8 See data sheet
  • Integrated Inductor
  • Miniature 3.5 mm × 3.5 mm × 1.75 mm Package
  • 2-A Maximum Load Current
  • Input Voltage Range of 2.7 V to 5.5 V
  • Adjustable Output Voltage Range of 0.8 V to 3.6 V
  • ± 1% Feedback Tolerance Over Temperature
  • 2.4-µA (maximum) Quiescent Current In Shutdown
  • 3-MHz Fixed PWM Switching Frequency
  • –40°C to 125°C Junction Temperature Range
  • Power Good Flag Function
  • Pin-Selectable Switching Modes
  • Internal Compensation and Soft Start
  • Current Limit, Thermal Shutdown, and UVLO Protection
  • Create a Custom Design Using the LMZ20502 With WEBENCH® Power Designer
  • Integrated Inductor
  • Miniature 3.5 mm × 3.5 mm × 1.75 mm Package
  • 2-A Maximum Load Current
  • Input Voltage Range of 2.7 V to 5.5 V
  • Adjustable Output Voltage Range of 0.8 V to 3.6 V
  • ± 1% Feedback Tolerance Over Temperature
  • 2.4-µA (maximum) Quiescent Current In Shutdown
  • 3-MHz Fixed PWM Switching Frequency
  • –40°C to 125°C Junction Temperature Range
  • Power Good Flag Function
  • Pin-Selectable Switching Modes
  • Internal Compensation and Soft Start
  • Current Limit, Thermal Shutdown, and UVLO Protection
  • Create a Custom Design Using the LMZ20502 With WEBENCH® Power Designer

The LMZ20502 nano module regulator is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 2 A of load from an input of up to 5.5 V, with exceptional efficiency and output accuracy in a very small solution size. The innovative package contains the regulator and inductor in a small 3.5 mm × 3.5 mm × 1.75 mm volume, thus saving board space and eliminating the time and expense of inductor selection. The LMZ20502 requires only five external components and has a pin-out designed for simple, optimum PCB layout. The device provides an easy-to-use complete design with a minimum number of external components and the TI WEBENCH® design tool. TI’s WEBENCH tool includes features such as external component calculation, electrical simulation, and WebTherm™. For soldering information, refer to the following document: SNOA401.

The LMZ20502 nano module regulator is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 2 A of load from an input of up to 5.5 V, with exceptional efficiency and output accuracy in a very small solution size. The innovative package contains the regulator and inductor in a small 3.5 mm × 3.5 mm × 1.75 mm volume, thus saving board space and eliminating the time and expense of inductor selection. The LMZ20502 requires only five external components and has a pin-out designed for simple, optimum PCB layout. The device provides an easy-to-use complete design with a minimum number of external components and the TI WEBENCH® design tool. TI’s WEBENCH tool includes features such as external component calculation, electrical simulation, and WebTherm™. For soldering information, refer to the following document: SNOA401.
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Technical documentation

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Type Title Date
* Data sheet LMZ20502 2-A Nano Module datasheet (Rev. D) PDF | HTML 24 Aug 2018
Application note Soldering Considerations for Power Modules (Rev. C) PDF | HTML 14 Mar 2024
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
Technical article FPGA power made simple: design steps PDF | HTML 20 Nov 2017
White paper Benefits and trade-offs of various power-module package options 02 Aug 2017
Technical article Smart power-supply designs for smart factories PDF | HTML 07 Dec 2015
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note AN-2169 LMZ10501 and LMZ10500 SIMPLE SWITCHER Nano Module (Rev. A) 23 Apr 2013
User guide AN-2283 LMZ20502 / LMZ20501 Evaluation Board 09 Oct 2012
Application note Understanding and Applying Current-Mode Control Theory 19 Aug 2007
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

LMZ20502EVM — LMZ20502 2A SIMPLE SWITCHER® Nano Module Evaluation Board

The LMZ20502EVM evaluation board is capable of driving up to 2A load with excellent power conversion efficiency, output voltage accuracy, line and load regulation and load transient response. The evaluation board is configured for 1.8V output voltage from 2.7V to 5.5V input, based on the resistor (...)

User guide: PDF
Not available on TI.com
Simulation model

LMZ20502 PSpice Transient Model

SNVM475.ZIP (64 KB) - PSpice Model
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Simulation model

LMZ20502 Unencrypted PSpice Transient Model

SNVM772.ZIP (4 KB) - PSpice Model
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Reference designs

TIDA-00783 — Space Optimized Wide Vin Triple-Output Power Module Reference Design

The TIDA-00783.1 reference design is a triple output wide Vin power module design. It provides 3.3V, 1.8V and 1.2V output, at 6W total power. The layout is optimized for space constrained applications.
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010011 — High efficiency power supply architecture reference design for protection relay processor module

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
USIP (SIL) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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