Product details

Vin (Min) (V) 3 Vin (Max) (V) 20 Vout (Min) (V) 0.8 Vout (Max) (V) 17 Iout (Max) (A) 1 Iq (Typ) (uA) 1500 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 3 Vin (Max) (V) 20 Vout (Min) (V) 0.8 Vout (Max) (V) 17 Iout (Max) (A) 1 Iq (Typ) (uA) 1500 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6
  • Input Voltage Range of 3 V to 20 V
  • Output Voltage Range of 0.8 V to 17 V
  • Output Current up to 1 A
  • 1.6 MHz (LMR12010X) and 3 MHz (LMR12010Y) Switching Frequencies
  • Low Shutdown IQ, 30 nA Typical
  • Internal Soft Start
  • Internally Compensated
  • Current-Mode PWM Operation
  • Thermal Shutdown
  • Tiny Overall Solution Reduces System Cost
  • Thin 6-Pin SOT-23 Package (2.97 × 1.65 × 1 mm)
  • Create a custom design using the LMR12010 with the WEBENCH® Power Designer
  • Input Voltage Range of 3 V to 20 V
  • Output Voltage Range of 0.8 V to 17 V
  • Output Current up to 1 A
  • 1.6 MHz (LMR12010X) and 3 MHz (LMR12010Y) Switching Frequencies
  • Low Shutdown IQ, 30 nA Typical
  • Internal Soft Start
  • Internally Compensated
  • Current-Mode PWM Operation
  • Thermal Shutdown
  • Tiny Overall Solution Reduces System Cost
  • Thin 6-Pin SOT-23 Package (2.97 × 1.65 × 1 mm)
  • Create a custom design using the LMR12010 with the WEBENCH® Power Designer

The LMR12010 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin thin SOT23 package. It provides 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 and online design support through WEBENCH, the LMR12010 is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 1.6 MHz (LMR12010X) or 3 MHz (LMR12010Y), allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LMR12010 utilizes 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 LMR12010 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin thin SOT23 package. It provides 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 and online design support through WEBENCH, the LMR12010 is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 1.6 MHz (LMR12010X) or 3 MHz (LMR12010Y), allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LMR12010 utilizes 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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Technical documentation

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Type Title Date
* Data sheet LMR12010 3-V to 20-V, 1-A Step-Down DC/DC Switching Regulator in SOT-23 datasheet (Rev. B) PDF | HTML 14 Jun 2019
User guide LMR12010 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 09 Dec 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Quantifying the value of wide VIN 15 Jun 2016
Technical article DC/DC converter datasheets – System losses demystified 25 Apr 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) PDF | HTML 19 Apr 2016
Technical article DC/DC converter datasheets – System efficiency demystified 18 Apr 2016
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 May 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMR12010YMKDEMO — LMR12010 SIMPLE SWITCHER® 20Vin, 1A Step-Down Regulator in SOT-23 Demo Board

The LMR12010 is a step down DC-DC regulator that operates at the following switching frequencies: the LMR12010X at 1.6MHz and the LMR12010Y at 3MHz. The demo board is configured to convert 5V input to 1.8V output at 1A load current using the Y version. The tiny low profile thin SOT23 package allows (...)

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Simulation model

LMR12010X PSpice Transient Model LMR12010X PSpice Transient Model

Simulation model

LMR12010Y PSpice Average Model LMR12010Y PSpice Average Model

Simulation model

LMR12010Y PSpice Transient Model LMR12010Y PSpice Transient Model

Simulation model

LMR12010X PSpice Average Model LMR12010X PSpice Average Model

Simulation model

LMR12010X TINA-TI Transient Load Transient Reference Design LMR12010X TINA-TI Transient Load Transient Reference Design

Simulation model

LMR12010X TINA-TI Transient Spice Model LMR12010X TINA-TI Transient Spice Model

Simulation model

LMR12010X TINA-TI Transient Startup Reference Design LMR12010X TINA-TI Transient Startup Reference Design

Simulation model

LMR12010X Unencrypted PSpice Average Model LMR12010X Unencrypted PSpice Average Model

Simulation model

LMR12010Y Unencrypted PSpice Average Model LMR12010Y Unencrypted PSpice Average Model

Simulation model

LMR12010X Unencrypted PSpice Transient Model LMR12010X Unencrypted PSpice Transient Model

Simulation model

LMR12010Y Unencrypted PSpice Transient Model LMR12010Y Unencrypted PSpice Transient Model

Simulation tool

PSPICE-FOR-TI PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SOT-23-THIN (DDC) 6 View options

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