Integrated Circuits (ICs)

LM5576MHX/NOPB

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6V TO 75V, 3A WIDE VIN STEP-DOWN REGULATOR

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Search across all available documentation for this part.

DocumentsAN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+18

Integrated Circuits (ICs)

LM5576MHX/NOPB

Active

Texas Instruments

6V TO 75V, 3A WIDE VIN STEP-DOWN REGULATOR

Deep-Dive with AI

DocumentsAN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+18

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5576MHX/NOPB

Current - Output	3 A
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	50 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	20-PowerTSSOP
Package / Case	0.173 in
Package / Case [custom]	4.4 mm
Supplier Device Package	20-HTSSOP
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	75 V
Voltage - Input (Min) [Min]	6 V
Voltage - Output (Max) [Max]	70 V
Voltage - Output (Min/Fixed)	1.225 V

LM5576-Q1 Series

75V, 3A Step-Down Switching Regulator

Part	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Number of Outputs	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Topology	Package / Case	Package / Case [custom]	Package / Case	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Current - Output	Voltage - Input (Min) [Min]	Output Configuration	Function	Utilized IC / Part	Voltage - Output [Max]	Voltage - Output [Min]	Outputs and Type	Outputs and Type	Main Purpose	Supplied Contents	Voltage - Input [Min]	Voltage - Input [Max]	Regulator Topology	Board Type	Grade	Qualification	Frequency - Switching	Voltage - Output
Texas Instruments LM5576MH/NOPB	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down
Texas Instruments LM5576BLDT/NOPB																3 A				LM5576	70 V	1.23 V	Non-Isolated	1	DC/DC Step Down	Board(s)	6 V	75 V	Buck	Partially Populated - Main IC Only
Texas Instruments LM5576QMH/NOPB	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down												Automotive	AEC-Q100
Texas Instruments LM5576Q0MHX/NOPB	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down												Automotive	AEC-Q100
Texas Instruments LM5576EVAL																3 A				LM5576			Non-Isolated	1	DC/DC Step Down	Board(s)	7 V	75 V	Buck	Fully Populated			300 kHz	5 V
Texas Instruments LM5576MHX	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down
Texas Instruments LM5576QMHX/NOPB	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down												Automotive	AEC-Q100
Texas Instruments LM5576EVAL/NOPB																3 A				LM5576			Non-Isolated	1	DC/DC Step Down	Board(s)	7 V	75 V	Buck	Fully Populated			300 kHz	5 V
Texas Instruments LM5576MHX/NOPB	Surface Mount	1.225 V	75 V	70 V	1	500 kHz	50 kHz	20-HTSSOP	Buck	20-PowerTSSOP	4.4 mm	0.173 in	Adjustable	-40 °C	125 ¯C	3 A	6 V	Positive	Step-Down

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 7.87
		10	$ 5.39
		25	$ 4.75
		100	$ 4.03
		250	$ 3.68
		500	$ 3.47
		1000	$ 3.30
	Digi-Reel®	1	$ 7.87
		10	$ 5.39
		25	$ 4.75
		100	$ 4.03
		250	$ 3.68
		500	$ 3.47
		1000	$ 3.30
	Tape & Reel (TR)	2500	$ 1.76
		5000	$ 1.69
Newark	Each (Supplied on Cut Tape)	1	$ 7.51
		10	$ 7.18
		25	$ 6.82
		50	$ 6.52
		100	$ 6.24
		250	$ 6.04
		500	$ 5.90
		1000	$ 5.80
Texas Instruments	LARGE T&R	1	$ 2.73
		100	$ 2.39
		250	$ 1.68
		1000	$ 1.35

Description

General part information

LM5576-Q1 Series

The LM5576Q0 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 LM5576Q0 delivers 3A of continuous output current with an integrated 170mΩ 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 LM5576Q0 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 TSSOP-20 package featuring an exposed die attach pad for thermal dissipation. The LM5576Q0 is supported by the full suite of WEBENCH On-Line design tools.

Documents

Technical documentation and resources

LM5576MHX/NOPB

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LM5576MHX/NOPB

Deep-Dive with AI

Technical Specifications

LM5576-Q1 Series

Pricing

Description

LM5576-Q1 Series

Documents

AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)

AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)

AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)

AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)

AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)

Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576 and LM25576 (Rev. B)

Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A)

LM5576/-Q1 SIMPLE SWITCHER® 75 V, 3 A Step-Down Switching Regulator datasheet (Rev. J)

Semiconductor and IC Package Thermal Metrics (Rev. D)

AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)

Power Management Guide 2018 (Rev. R)

Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)

AN-1197 Selecting Inductors for Buck Converters (Rev. B)

AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)

AN-1570 LM5576 Evaluation Board (Rev. B)

AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

Understanding and Applying Current-Mode Control Theory

Input and Output Capacitor Selection

AN-643 EMI/RFI Board Design (Rev. B)

LM5576-Q1 Series