LM5576

現行

6V 至 75V、3A 大範圍 Vin 降壓穩壓器

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產品規格表

document-pdfAcrobat LM5576 75V, 3A, Step-Down Switching Regulator datasheet (Rev. K) (英文) PDF | HTML

LM5576

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Topology

Buck

Iout (max) (A)

Vin (max) (V)

Vin (min) (V)

Vout (max) (V)

Vout (min) (V)

1.23

Features

Enable, Frequency synchronization, Over Current Protection, Tracking

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

Rating

Catalog

Topology

Buck

Iout (max) (A)

Vin (max) (V)

Vin (min) (V)

Vout (max) (V)

Vout (min) (V)

1.23

Features

Enable, Frequency synchronization, Over Current Protection, Tracking

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

HTSSOP (PWP)

41.6 mm² (6.5 mm × 6.4 mm)

Ultra-wide input voltage range from 6V to 75V
Integrated 75V, 170mΩ N-channel MOSFET
Adjustable output voltage as low as 1.225V
1.5% feedback reference accuracy
Operating frequency adjustable between 50kHz and 500kHz with single resistor
Controller or peripheral frequency synchronization
Adjustable soft start
Emulated current mode control architecture
Wide bandwidth error amplifier
Built-in protection
HTSSOP-20EP (exposed pad)
Create a custom design using the LM5576 with the WEBENCH Power Designer

Ultra-wide input voltage range from 6V to 75V
Integrated 75V, 170mΩ N-channel MOSFET
Adjustable output voltage as low as 1.225V
1.5% feedback reference accuracy
Operating frequency adjustable between 50kHz and 500kHz with single resistor
Controller or peripheral frequency synchronization
Adjustable soft start
Emulated current mode control architecture
Wide bandwidth error amplifier
Built-in protection
HTSSOP-20EP (exposed pad)
Create a custom design using the LM5576 with the WEBENCH Power Designer

The LM5576 is an easy-to-use, 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 6V to 75V, the LM5576 delivers 3A of continuous output current with an integrated 170mΩ N-Channel MOSFET. The regulator uses 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 ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 makes sure of robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a power-enhanced, 20-pin HTSSOP package that features an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH circuit design and selection simulation services online design tools.

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重要文件	類型	標題	格式選項	日期
*	資料表	LM5576 75V, 3A, Step-Down Switching Regulator datasheet (Rev. K)	PDF \| HTML	2025/11/3
	應用說明	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	2024/3/25
	白皮書	Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A)		2018/7/3
	選擇指南	Power Management Guide 2018 (Rev. R)		2018/6/25
	應用說明	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		2014/9/12
	應用說明	AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)		2013/5/6
	應用說明	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		2013/4/24
	應用說明	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		2013/4/23
	應用說明	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		2013/4/23
	應用說明	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		2013/4/23
	應用說明	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		2013/4/23
	應用說明	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		2013/4/23
	應用說明	Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576 and LM25576 (Rev. B)		2013/4/23
	應用說明	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		2013/4/23
	應用說明	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		2013/4/23
	應用說明	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		2013/4/23
	應用說明	Understanding and Applying Current-Mode Control Theory		2007/8/19
	應用說明	Input and Output Capacitor Selection		2005/9/19
	更多文件說明	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		2005/7/12
	應用說明	AN-643 EMI/RFI Board Design (Rev. B)		2004/5/3

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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 (...)

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