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Product details

Parameters

Vin (Min) (V) 6 Vin (Max) (V) 75 Vout (Min) (V) 1.23 Vout (Max) (V) 70 Iout (Max) (A) 1.5 Iq (Typ) (uA) 1000 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 500 Features Enable, Frequency Synchronization, Over Current Protection, Tracking Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other Buck converters (integrated switch)

Features

  • LM5575Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (−40°C to + 125°C Operating Junction Temperature)
  • Integrated 75V, 330mΩ N-channel MOSFET
  • Ultra-wide Input Voltage Range from 6V to 75V
  • Adjustable Output Voltage as Low as 1.225V
  • 1.5% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50kHz and 500kHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • Automotive Grade Product Datasheet that is AEC-Q100 Grade 0 Qualified is Available Upon Request.
    • (−40°C to + 150°C Operating Junction Temperature)

Package

  • HTSSOP-16EP (Exposed Pad)

WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

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Description

The LM5575 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75V, the LM5575 delivers 1.5A of continuous output current with an integrated 330mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5575 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced HTSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM5575 is supported by the full suite of WEBENCH On-Line design tools.

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LM5164 ACTIVE 6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ 6-V to 100-V Input, 1-A synchronous buck DC/DC converter with ultra-low IQ.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 24
Type Title Date
* Datasheet LM5575/LM5575Q SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator datasheet (Rev. G) Apr. 04, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) Jul. 03, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles How to increase system reliability and simplify design using DC/DC converters Jun. 13, 2016
Technical articles The importance of accurate switching frequency and current limit when selecting buck regulators Apr. 19, 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) Apr. 19, 2016
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) Sep. 12, 2014
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) May 06, 2013
User guide AN-1569 LM5575 Evaluation Board (Rev. C) Apr. 26, 2013
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 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 Quick Start Guide for a 1.5 Amp Buck Regulator Using the LM5575 and LM25575 (Rev. B) Apr. 23, 2013
Application note Understanding and Applying Current-Mode Control Theory Aug. 19, 2007
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

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

Hardware development

EVALUATION BOARD Download
49
Description

The LM5575 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5575 regulator IC. The evaluation board provides a 5V output with a 1.5A current capability. The ultra-wide input voltage ranges (...)

Features
  • Integrated 75V, 330Wm N-Channel MOSFET
  • Ultra-wide input voltage range from 6V to 75V
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Master or slave frequency synchronization
  • Adjustable soft-start
  • (...)

Design tools & simulation

SIMULATION MODEL Download
SNVM033A.ZIP (86 KB) - PSpice Model
SIMULATION MODEL Download
SNVM351.ZIP (17 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SNVM352.TSC (146 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SNVM963A.ZIP (4 KB) - PSpice Model
SIMULATION MODEL Download
SNVMBI2.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SNVMBI3.ZIP (95 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
  • (...)
CALCULATION TOOL Download
CALCULATION TOOL Download

Reference designs

REFERENCE DESIGNS Download
Non sync buck controller with 20 to 27V input and 4.5 to 17V @ 1.4A output
PMP7772 — PMP7772 is a non sync buck regulator. It has an input of 20V to 27V and output of 4.5V to 17V @ 1.4A. LM5575 uses Emulated Current Mode control architecture which provides inherent line regulation, tight load transient response and ease of loop compensation without the usual limitation of low duty (...)
Design files

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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