Integrated Circuits (ICs)

LM25574QMT/NOPB

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42V, 0.5A STEP-DOWN SWITCHING REGULATOR

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Search across all available documentation for this part.

DocumentsLow EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+16

Integrated Circuits (ICs)

LM25574QMT/NOPB

Active

Texas Instruments

42V, 0.5A STEP-DOWN SWITCHING REGULATOR

Deep-Dive with AI

DocumentsLow EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+16

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM25574QMT/NOPB

Current - Output	500 mA
Frequency - Switching [Max]	1 MHz
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]	42 V
Voltage - Input (Min) [Min]	6 V
Voltage - Output (Max) [Max]	40 V
Voltage - Output (Min/Fixed)	1.225 V

LM25574-Q1 Series

42V, 0.5A Step-Down Switching Regulator

Part	Output Type	Topology	Voltage - Input (Min) [Min]	Output Configuration	Mounting Type	Current - Output	Qualification	Voltage - Input (Max) [Max]	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Package / Case [x]	Package / Case	Package / Case [y]	Function	Voltage - Output (Max) [Max]	Grade	Number of Outputs	Voltage - Output (Min/Fixed)
Texas Instruments LM25574Q0MT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574MTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V
Texas Instruments LM25574MTX	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V
Texas Instruments LM25574QMTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574QMT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574Q0MTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574MT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	276	$ 3.42
Texas Instruments	TUBE	1	$ 3.70
		100	$ 3.24
		250	$ 2.27
		1000	$ 1.83

Description

General part information

LM25574-Q1 Series

The LM25574-Q1 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 6 V to 42 V, the LM25574-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 1-MHz 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 LM25574-Q1 guarantees 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.

Documents

Technical documentation and resources

LM25574QMT/NOPB

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LM25574QMT/NOPB

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Technical Specifications

LM25574-Q1 Series

Pricing

Description

LM25574-Q1 Series

Documents

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

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

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

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

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

Understanding and Applying Current-Mode Control Theory

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

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

LM25574-Q1 42-V, 0.5-A Step-Down Switching Regulator datasheet

AN-1577 LM25574 Evaluation Board (Rev. B)

Input and Output Capacitor Selection

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

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

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

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

LM25574-Q1 Series