Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

LMR12015

AKTIV

Abwärtsspannungsregler, 20 Vin, 1,5 A, in LLP-10

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2300 Features Enable, Frequency synchronization Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2300 Features Enable, Frequency synchronization Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 90
WSON (DSC) 10 9 mm² 3 x 3
  • Input Voltage Range of 3 V to 20 V
  • Output Voltage Range of 1 V to 18 V
  • LMR12015 and LMR12020 Deliver 1.5-A and 2-A Maximum Output Current, Respectively
  • 2-MHz Switching Frequency
  • Frequency Synchronization from 1 MHz to 2.35 MHz
  • 70-nA Shutdown Current
  • 1% Voltage-Reference Accuracy
  • Peak-Current-Mode PWM Operation
  • Thermal Shutdown
  • Internally Compensated
  • Internal Soft Start
  • Tight Accuracy for Powering Digital ICs
  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost
  • Space-Saving WSON (3 × 3 × 0.8 mm) Packaging
  • Create a custom design using the LMR12015 WEBENCH® Power Designer or LMR12020 WEBENCH® Power Designer
  • Input Voltage Range of 3 V to 20 V
  • Output Voltage Range of 1 V to 18 V
  • LMR12015 and LMR12020 Deliver 1.5-A and 2-A Maximum Output Current, Respectively
  • 2-MHz Switching Frequency
  • Frequency Synchronization from 1 MHz to 2.35 MHz
  • 70-nA Shutdown Current
  • 1% Voltage-Reference Accuracy
  • Peak-Current-Mode PWM Operation
  • Thermal Shutdown
  • Internally Compensated
  • Internal Soft Start
  • Tight Accuracy for Powering Digital ICs
  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost
  • Space-Saving WSON (3 × 3 × 0.8 mm) Packaging
  • Create a custom design using the LMR12015 WEBENCH® Power Designer or LMR12020 WEBENCH® Power Designer

The LMR120xx regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 10-pin WSON package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components the LMR12015/20 is easy to use. The ability to drive 1.5-A or 2-A loads, with an internal 150-mΩ NMOS switch results in the best power density available. The control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included featuring an ultra-low shutdown current of 70 nA. The LMR12015/20 utilizes peak current mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

The LMR120xx regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 10-pin WSON package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components the LMR12015/20 is easy to use. The ability to drive 1.5-A or 2-A loads, with an internal 150-mΩ NMOS switch results in the best power density available. The control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included featuring an ultra-low shutdown current of 70 nA. The LMR12015/20 utilizes peak current mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LMR120xx 20-VIN, 1.5-A or 2-A Step-Down Voltage Regulator in WSON Package datasheet (Rev. B) PDF | HTML 14 Jun 2019
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mär 2024
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
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-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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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WSON (DSC) 10 Ultra Librarian

Bestellen & Qualität

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