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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM5576

現行

6V 至 75V、3A 大範圍 Vin 降壓穩壓器

立即訂購
產品規格表

LM5576

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 6 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Iq (typ) (µA) 1000 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 6 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 70 Iq (typ) (µA) 1000 Duty cycle (max) (%) 95
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • LM5576-Q1 is an Automotive Grade Product that
    is AEC-Q100 grade 1 Qualified (−40°C
    to + 125°C Operating Junction Temperature) and
    AEC-Q100 Grade 0 Qualified (−40°C to + 150°C
    + 150°COperating Junction Temperature)
  • Integrated 75 V, 170 mΩ N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% (Q1) and 1.65% (Q0) Feedback Reference
    Accuracy
  • Operating Frequency Adjustable Between 50 kHz
    and 500 kHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • HTSSOP-20EP (Exposed Pad)
  • LM5576-Q1 is an Automotive Grade Product that
    is AEC-Q100 grade 1 Qualified (−40°C
    to + 125°C Operating Junction Temperature) and
    AEC-Q100 Grade 0 Qualified (−40°C to + 150°C
    + 150°COperating Junction Temperature)
  • Integrated 75 V, 170 mΩ N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% (Q1) and 1.65% (Q0) Feedback Reference
    Accuracy
  • Operating Frequency Adjustable Between 50 kHz
    and 500 kHz with Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-in Protection
  • HTSSOP-20EP (Exposed Pad)

The LM5576 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 - 75 V, the LM5576 delivers 3 A of continuous output current with an integrated 170 mΩ 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 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 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-20 package featuring an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH On-Line design tools.

The LM5576 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 - 75 V, the LM5576 delivers 3 A of continuous output current with an integrated 170 mΩ 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 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 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-20 package featuring an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH On-Line design tools.
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類型 標題 日期
* Data sheet LM5576/-Q1 SIMPLE SWITCHER® 75 V, 3 A Step-Down Switching Regulator datasheet (Rev. J) PDF | HTML 2014年 3月 3日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 2018年 7月 3日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 2013年 5月 6日
EVM User's guide AN-1570 LM5576 Evaluation Board (Rev. B) 2013年 4月 26日
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
Application note Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576 and LM25576 (Rev. B) 2013年 4月 23日
Application note Understanding and Applying Current-Mode Control Theory 2007年 8月 19日
Application note Input and Output Capacitor Selection 2005年 9月 19日
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日

設計與開發

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開發板

LM5576EVAL — 75V、3A 降壓式切換穩壓器評估模組

The LM5576 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5576 regulator IC. The evaluation board provides a 5V output with a 3A current capability. The ultra-wide input voltage ranges from (...)

使用指南: PDF
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模擬型號

LM5576 Non-Inverting and Inverting PSpice Transient Model (Rev. C)

SNVM292C.ZIP (1168 KB) - PSpice Model
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模擬型號

LM5576 Non-Inverting and Inverting Unencrypted PSpice Transient Model (Rev. C)

SNVM935C.ZIP (5 KB) - PSpice Model
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模擬型號

LM5576 TINA-TI Transient Inverting Buck Boost Startup Reference Design

SNVMBP7.TSC (677 KB) - TINA-TI Reference Design
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模擬型號

LM5576 TINA-TI Transient Line Transient Reference Design

SNVMBP5.TSC (565 KB) - TINA-TI Reference Design
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模擬型號

LM5576 TINA-TI Transient Load Transient Reference Design (Rev. A)

SNVM548A.TSC (566 KB) - TINA-TI Reference Design
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模擬型號

LM5576 TINA-TI Transient Spice Model (Rev. A)

SNVM549A.ZIP (10 KB) - TINA-TI Spice Model
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模擬型號

LM5576 TINA-TI Transient Start-up Reference Design (Rev. A)

SNVM547A.TSC (661 KB) - TINA-TI Reference Design
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模擬型號

LM5576 TINA-TI Transient Steady State Reference Design

SNVMBP6.TSC (647 KB) - TINA-TI Reference Design
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計算工具

LM2557X-557XQUICK-CALC — LM(2)557x 快速入門 SIMPLE SWITCHER 元件計算機

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計算工具

SIMPLESWITCHER-COMPONENT-CALC — 可下載的 LM(2)557x 快速入門 SIMPLE SWITCHER 元件計算機

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HTSSOP (PWP) 20 Ultra Librarian
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