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Product details

Parameters

Iout (Max) (A) 2 Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 0.8 Vout (Max) (V) 3.6 Soft start Fixed Features EMI Tested, Enable, Light Load Efficiency, Power Good Operating temperature range (C) -40 to 125 Iq (Typ) (mA) 0.072 Iq (Typ) (uA) 72 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 3200 Switching frequency (Min) (kHz) 2500 Switching frequency (Typ) (kHz) 3000 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
  • 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

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Description

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
* Datasheet LMZ20502 2-A Nano Module datasheet (Rev. D) Aug. 24, 2018
Application notes Soldering Considerations for Power Modules Nov. 26, 2018
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 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
Technical articles Smart power-supply designs for smart factories Dec. 07, 2015
Application notes AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) Apr. 23, 2013
Application notes AN-2169 LMZ10501 and LMZ10500 SIMPLE SWITCHER Nano Module (Rev. A) Apr. 23, 2013
User guides AN-2283 LMZ20502 / LMZ20501 Evaluation Board Oct. 09, 2012
Application notes Understanding and Applying Current-Mode Control Theory Aug. 19, 2007
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

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
20
Description

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 (...)

Features
  • Vin = 2.7V to 5.5V
  • Vout = 1.8V
  • 2A max load
  • 3.0 x 6.5 cm overall PCB size

Design tools & simulation

SIMULATION MODELS Download
SNVM475.ZIP (64 KB) - PSpice Model
SIMULATION MODELS Download
SNVM772.ZIP (4 KB) - PSpice Model
SIMULATION TOOLS 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
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Space Optimized Wide Vin Triple-Output Power Module Reference Design
TIDA-00783 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.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
7V to 40V Wide Input, 3-Output SIMPLE SWITCHER® Reference Design Using LMR14050 and LMZ20502
PMP10743 The reference design shows the wide input voltage capability, simple layout, and small solution size of the LMR14050 SIMPLE SWITCHER® Buck Converter and the LMZ20502 Nano Module. The LMR14050 provides a 5V output rail which feeds into two LMZ20502 Nano Modules.  The modules provide a 3.3V (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Minature 2A Power Supply with LMZ20502 Nano Module - Reference Design
PMP10595 The PMP10595 reference design is a miniature 1.8V, 2A output power supply using the SIMPLE SWITCHER® LMZ20502 nano module. The reference design takes advantage of the miniature package and high level integration of the LMZ20502 to achieve small solution size, which is about 5mm x 6mm (30 sq (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
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