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Product details

Parameters

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Package | Pins | Size

DSBGA (YPA) 28 0 mm² 3.685 x 2.489 open-in-new Find other Buck converters (integrated switch)

Features

  • Input Voltage Range of 4.5 V to 42 V
  • Output Voltage Range of 0.8 V to 24 V
  • Output Current up to 1 A
  • Integrated low RDS(ON) Synchronous MOSFETs for High Efficiency
  • Up to 1 MHz Switching Frequency
  • Low Shutdown IQ, 25 µA Typical
  • Programmable Soft Start
  • No Loop Compensation Required
  • COT With ERM Architecture
  • Tiny Overall Solution Reduces System Cost
  • Integrated Synchronous MOSFETs Provides High Efficiency at Low Output Voltages
  • Stable with Low ESR Capacitors
  • 28-Bump DSBGA Packaging
  • Create a custom design using the LMR24010 with the WEBENCH® Power Designer
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Description

The LMR24210 synchronously rectified buck converter features all required functions to implement a highly efficient and cost effective buck regulator. It is capable of supplying 1 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LMR24210 does not rely on output capacitor ESR for stability, and is designed to work exceptionally well with ceramic and other very low ESR output capacitors. It requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the on-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC under-voltage lock-out, output overvoltage protection, thermal shutdown, and gate-drive undervoltage lockout. The LMR24210 is available in the small DSBGA low profile chip-scale package.

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Technical documentation

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Type Title Date
* Data sheet LMR24210 42-VIN, 1-A Step-Down Voltage Regulator in DSBGA Package datasheet (Rev. H) Jun. 14, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Absolute Maximum Ratings for Soldering (Rev. D) Jun. 09, 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) Apr. 19, 2016
Application note Cap Drop Offline Supply for E-Meters Jun. 16, 2015
Application note Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) Feb. 20, 2015
Application note Thermal Design Made Simple With LM43603 and LM46002 Sep. 15, 2014
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) Sep. 12, 2014
Application note Compensation Made SIMPLE With LM4360x, LM4600x Jul. 29, 2014
Application note Automotive Line Transient Protection Circuit Jul. 01, 2014
User guide AN-2170 LMR24210/20 Evaluation Board (Rev. A) Apr. 26, 2013
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) Apr. 24, 2013
User guide AN-2193 LMR24220 Multi-Rail Reference Board (Rev. A) Apr. 24, 2013
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) Apr. 23, 2013
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) Apr. 23, 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) Apr. 23, 2013
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) Apr. 23, 2013
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) Apr. 23, 2013
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) Apr. 23, 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) Apr. 23, 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) Apr. 23, 2013
Application note Input and Output Capacitor Selection Sep. 19, 2005
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
document-generic User guide
20
Description

The LMR24210/20 Step Down Switching Regulator features all required functions to implement a cost effective, efficient buck power converter capable of supplying up to 1.0A or 2.0A. The Constant On-Time (COT) regulation scheme requires no loop compensation, results in a fast load transient response (...)

Features
  • 4.5V to 42V Input Voltage Range
  • 3.3V Output Voltage (default setting)
  • Up to 1 A Output Current (LMR24210)
  • Switching Frequency of 500 KHz (default setting)
  • PCB size: 46.8mm x 27.4mm

Design tools & simulation

SIMULATION MODEL Download
SNVM221.ZIP (220 KB) - PSpice Model
SIMULATION MODEL Download
SNVM972.ZIP (3 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
  • (...)

CAD/CAE symbols

Package Pins Download
DSBGA (YPA) 28 View options

Ordering & quality

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