LM25574-Q1

AKTIV

Abwärtsschaltregler, 42 V, 0,5 A

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Datenblatt

document-pdfAcrobat LM25574-Q1 42-V, 0.5-A Step-Down Switching Regulator datasheet (Englisch) PDF | HTML

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.

TPS560430-Q1

AKTIV

Synchroner SIMPLE SWITCHER®-Abwärts-Stromwandler für die Automobilindustrie, 4 V bis 36 V, 0,6 A Smaller footprint in SOT-23 package, integrated compensation and synchronous rectification.

LM25574-Q1

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Automotive

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

42

Vin (min) (V)

6

Vout (max) (V)

40

Vout (min) (V)

1.23

Features

Frequency synchronization, Over Current Protection, Soft Start Adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

95

Rating

Automotive

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

42

Vin (min) (V)

6

Vout (max) (V)

40

Vout (min) (V)

1.23

Features

Frequency synchronization, Over Current Protection, Soft Start Adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

95

TSSOP (PW)

16

32 mm² (5 mm × 6.4 mm)

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
Integrated 42-V, 750-mΩ N-Channel MOSFET
Ultra-Wide Input Voltage From 6 V to 42 V
Adjustable Output Voltage as Low as 1.225 V
1.5% Feedback Reference Accuracy
Operating Frequency Adjustable Between 50 kHz and 1 MHz With Single Resistor
Master or Slave Frequency Synchronization
Adjustable Soft-Start
Emulated Current Mode Control Architecture
Wide Bandwidth Error Amplifier
Built-In Protection
TSSOP-16 Package
Create a Custom Design Using the LM25574-Q1 With the WEBENCH^® Power Designer

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
Integrated 42-V, 750-mΩ N-Channel MOSFET
Ultra-Wide Input Voltage From 6 V to 42 V
Adjustable Output Voltage as Low as 1.225 V
1.5% Feedback Reference Accuracy
Operating Frequency Adjustable Between 50 kHz and 1 MHz With Single Resistor
Master or Slave Frequency Synchronization
Adjustable Soft-Start
Emulated Current Mode Control Architecture
Wide Bandwidth Error Amplifier
Built-In Protection
TSSOP-16 Package
Create a Custom Design Using the LM25574-Q1 With the WEBENCH^® Power Designer

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.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LM25574-Q1 42-V, 0.5-A Step-Down Switching Regulator datasheet	PDF \| HTML	13.10.2017
	Anwendungshinweis	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25.03.2024
	Whitepaper	Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A)		03.07.2018
	Anwendungshinweis	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12.09.2014
	Anwendungshinweis	AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)		06.05.2013
	Anwendungshinweis	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24.04.2013
	Anwendungshinweis	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23.04.2013
	Anwendungshinweis	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23.04.2013
	Anwendungshinweis	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23.04.2013
	Anwendungshinweis	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23.04.2013
	Anwendungshinweis	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23.04.2013
	Anwendungshinweis	Understanding and Applying Current-Mode Control Theory		19.08.2007
	Anwendungshinweis	Input and Output Capacitor Selection		19.09.2005
	Weitere Dokumente	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		12.07.2005
	Anwendungshinweis	AN-643 EMI/RFI Board Design (Rev. B)		03.05.2004

Design und Entwicklung

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