Integrated Circuits (ICs)

LM5574QMTX/NOPB

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CONV DC-DC 6V TO 75V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.225V 0.5A AUTOMOTIVE AEC-Q100 16-PIN TSSOP T/R

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Search across all available documentation for this part.

DocumentsOvercoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A)AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)+18

Integrated Circuits (ICs)

LM5574QMTX/NOPB

Active

Texas Instruments

CONV DC-DC 6V TO 75V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.225V 0.5A AUTOMOTIVE AEC-Q100 16-PIN TSSOP T/R

Deep-Dive with AI

DocumentsOvercoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A)AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)+18

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5574QMTX/NOPB

Current - Output	500 mA
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	50 kHz
Function	Step-Down
Grade	Automotive
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	16-TSSOP
Package / Case [x]	0.173 in
Package / Case [y]	4.4 mm
Qualification	AEC-Q100
Supplier Device Package	16-TSSOP
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

LM5574-Q1 Series

75V, 0.5A Step-Down Switching Regulator

Part	Qualification	Output Type	Supplier Device Package	Voltage - Output (Min/Fixed)	Function	Output Configuration	Grade	Topology	Number of Outputs	Frequency - Switching [Max]	Frequency - Switching [Min]	Current - Output	Voltage - Input (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Voltage - Input (Min) [Min]	Package / Case [x]	Package / Case	Package / Case [y]	Voltage - Output (Max) [Max]	Voltage - Output [Max]	Voltage - Output [Min]	Main Purpose	Utilized IC / Part	Voltage - Input [Min]	Voltage - Input [Max]	Regulator Topology	Supplied Contents	Outputs and Type	Outputs and Type	Board Type
Texas Instruments LM5574QMTX/NOPB	AEC-Q100	Adjustable	16-TSSOP	1.225 V	Step-Down	Positive	Automotive	Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V
Texas Instruments LM5574BLDT/NOPB												500 mA										70 V	1.23 V	DC/DC Step Down	LM5574	6 V	75 V	Buck	Board(s)	Non-Isolated	1	Bare (Unpopulated)
Texas Instruments LM5574MT		Adjustable	16-TSSOP	1.225 V	Step-Down	Positive		Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V
Texas Instruments LM5574Q0MTX/NOPB	AEC-Q100	Adjustable	16-TSSOP	1.225 V	Step-Down	Positive	Automotive	Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V
Texas Instruments LM5574QMT/NOPB	AEC-Q100	Adjustable	16-TSSOP	1.225 V	Step-Down	Positive	Automotive	Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V
Texas Instruments LM5574MTX/NOPB		Adjustable	16-TSSOP	1.225 V	Step-Down	Positive		Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V
Texas Instruments LM5574MT/NOPB		Adjustable	16-TSSOP	1.225 V	Step-Down	Positive		Buck	1	500 kHz	50 kHz	500 mA	75 V	-40 °C	125 ¯C	Surface Mount	6 V	0.173 in	16-TSSOP	4.4 mm	70 V

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	$ 3.89
		10	$ 3.50
		25	$ 3.30
		100	$ 2.86
		250	$ 2.72
		500	$ 2.44
		1000	$ 2.06
	Digi-Reel®	1	$ 3.89
		10	$ 3.50
		25	$ 3.30
		100	$ 2.86
		250	$ 2.72
		500	$ 2.44
		1000	$ 2.06
	Tape & Reel (TR)	2500	$ 1.95
		5000	$ 1.88
Texas Instruments	LARGE T&R	1	$ 2.74
		100	$ 2.40
		250	$ 1.68
		1000	$ 1.36

Description

General part information

LM5574-Q1 Series

The LM5574-Q1 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 LM5574-Q1 delivers 0.5 A of continuous output current with an integrated 750 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 LM5574-Q1 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM5574-Q1 is supported by the full suite of WEBENCH On-Line design tools.

Documents

Technical documentation and resources

LM5574QMTX/NOPB

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LM5574QMTX/NOPB

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Technical Specifications

LM5574-Q1 Series

Pricing

Description

LM5574-Q1 Series

Documents

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

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

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

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

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

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

Cap Drop Offline Supply for E-Meters

Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

Understanding and Applying Current-Mode Control Theory

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

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

AN-1568 LM5574 Evaluation Board (Rev. C)

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

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

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

Input and Output Capacitor Selection

LM5574-Q1 Simple Switcher® 75 V, 0.5 A Step-Down Switching Regulator datasheet (Rev. C)

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

LM5574-Q1 Series