LMR14203

Name: LMR14203
Brand: TI
SKU: LMR14203
Price: 0.929 USD

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DC/DC-Abwärtsschaltregler, 4,5 bis 42 V, 0,3 A, in SOT-23

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Datenblatt

document-pdfAcrobat SIMPLE SWITCHER 42Vin, 0.3A Step-Dwn V-Reg in SOT-23 datasheet (Rev. C) (Englisch)

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LMR14203

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

0.3

Vin (min) (V)

4.5

Vin (max) (V)

42

Switching frequency (min) (kHz)

950

Switching frequency (max) (kHz)

1500

Features

Enable, Over Current Protection

Control mode

current mode

Vout (min) (V)

0.765

Vout (max) (V)

34

Iq (typ) (µA)

1300

Duty cycle (max) (%)

87

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

0.3

Vin (min) (V)

4.5

Vin (max) (V)

42

Switching frequency (min) (kHz)

950

Switching frequency (max) (kHz)

1500

Features

Enable, Over Current Protection

Control mode

current mode

Vout (min) (V)

0.765

Vout (max) (V)

34

Iq (typ) (µA)

1300

Duty cycle (max) (%)

87

SOT-23-THN (DDC)

6

8.12 mm² 2.9 x 2.8

Input Voltage Range of 4.5V to 42V
Output Voltage Range of 0.765V to 34V
Output Current up to 0.3A
1.25 MHz Switching Frequency
Low Shutdown Iq, 16 µA Typical
Short Circuit Protected
Internally Compensated
Soft-Start Function
Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
Fully Enabled for WEBENCH® Power Designer

Performance Benefits

Tight Accuracy for Powering Digital ICs
Extremely Easy to Use
Tiny Overall Solution Reduces System Cost

All trademarks are the property of their respective owners.

Input Voltage Range of 4.5V to 42V
Output Voltage Range of 0.765V to 34V
Output Current up to 0.3A
1.25 MHz Switching Frequency
Low Shutdown Iq, 16 µA Typical
Short Circuit Protected
Internally Compensated
Soft-Start Function
Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
Fully Enabled for WEBENCH® Power Designer

Performance Benefits

Tight Accuracy for Powering Digital ICs
Extremely Easy to Use
Tiny Overall Solution Reduces System Cost

All trademarks are the property of their respective owners.

The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low R_DSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.

The LMR14203 is optimized for up to 300 mA load current.

Additional features include: thermal shutdown, V_IN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.

The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low R_DSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.

The LMR14203 is optimized for up to 300 mA load current.

Additional features include: thermal shutdown, V_IN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.

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Alle anzeigen 20

	Typ	Titel		Datum
*	Data sheet	SIMPLE SWITCHER 42Vin, 0.3A Step-Dwn V-Reg in SOT-23 datasheet (Rev. C)		04 Apr 2013
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25 Mär 2024
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Technical article	Quantifying the value of wide VIN	PDF \| HTML	15 Jun 2016
	Technical article	DC/DC converter datasheets – System losses demystified	PDF \| HTML	25 Apr 2016
	Technical article	DC/DC converter datasheets – System efficiency demystified	PDF \| HTML	18 Apr 2016
	Application note	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12 Sep 2014
	User guide	AN-2185 LMR14203/LMR14206 Demonstation Board (Rev. B)		26 Apr 2013
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24 Apr 2013
	Application note	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23 Apr 2013
	Application note	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23 Apr 2013
	Application note	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23 Apr 2013
	Application note	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		23 Apr 2013
	Application note	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23 Apr 2013
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23 Apr 2013
	Application note	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23 Apr 2013
	Application note	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23 Apr 2013
	Application note	Input and Output Capacitor Selection		19 Sep 2005
	More literature	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		12 Jul 2005
	Application note	AN-643 EMI/RFI Board Design (Rev. B)		03 Mai 2004

Design und Entwicklung

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Evaluierungsplatine

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The LMR14203/06 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a variety of applications from automotive to power conditioning of unregulated sources. The LMR14203/LMR14006 Evaluation Board is designed to provide the design engineer with a fully (...)

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LMR14203

DC/DC-Abwärtsschaltregler, 4,5 bis 42 V, 0,3 A, in SOT-23

Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei gleicher Anschlussbelegung

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung

LMR14203

Produktdetails

Performance Benefits

Performance Benefits

Technische Dokumentation

Design und Entwicklung

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