Product details

Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1 Iq (Typ) (uA) 3300 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) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1 Iq (Typ) (uA) 3300 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 (DBV) 5 5 mm² 2.9 x 1.6 WSON (NGG) 6 9 mm² 3 x 3
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.6 V to 4.5 V
  • Output Current up to 1 A
  • 1.6-MHz (LMR10510X) and 3-MHz (LMR10510Y) Switching Frequencies
  • Low Shutdown IQ, 30 nA Typical
  • Internal Soft Start
  • Internally Compensated
  • Current-Mode PWM Operation
  • Thermal Shutdown
  • SOT-23 (2.92 × 2.84 × 1 mm) and WSON
    (3 × 3 × 0.8 mm) Packaging
  • Tiny Overall Solution Reduces System Cost
  • Create a custom design using the LMR10510 with the WEBENCH® Power Designer
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.6 V to 4.5 V
  • Output Current up to 1 A
  • 1.6-MHz (LMR10510X) and 3-MHz (LMR10510Y) Switching Frequencies
  • Low Shutdown IQ, 30 nA Typical
  • Internal Soft Start
  • Internally Compensated
  • Current-Mode PWM Operation
  • Thermal Shutdown
  • SOT-23 (2.92 × 2.84 × 1 mm) and WSON
    (3 × 3 × 0.8 mm) Packaging
  • Tiny Overall Solution Reduces System Cost
  • Create a custom design using the LMR10510 with the WEBENCH® Power Designer

The LMR10510 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 5-pin SOT-23 and a 6-pin WSON 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. The LMR10510 is internally compensated, so it is simple to use and requires few external components. The ability to drive 1-A loads with an internal 130-mΩ PMOS switch results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.6 V.

The LMR10510 is a constant frequency PWM buck regulator IC that delivers a 1-A load current. The regulator has a preset switching frequency of 1.6 MHz or 3 MHz. This high frequency allows the LMR10510 to operate with small surface mount capacitors and inductors, resulting in a DC/DC converter that requires a minimum amount of board space. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30 nA. The LMR10510 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 LMR10510 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 5-pin SOT-23 and a 6-pin WSON 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. The LMR10510 is internally compensated, so it is simple to use and requires few external components. The ability to drive 1-A loads with an internal 130-mΩ PMOS switch results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.6 V.

The LMR10510 is a constant frequency PWM buck regulator IC that delivers a 1-A load current. The regulator has a preset switching frequency of 1.6 MHz or 3 MHz. This high frequency allows the LMR10510 to operate with small surface mount capacitors and inductors, resulting in a DC/DC converter that requires a minimum amount of board space. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30 nA. The LMR10510 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 LMR10510 5.5-VIN, 1-A Step-Down Voltage Regulator in SOT-23 and WSON Packages datasheet (Rev. C) 07 Jun 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note QFN and SON PCB Attachment (Rev. B) 24 Aug 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Quantifying the value of wide VIN 15 Jun 2016
Application note Absolute Maximum Ratings for Soldering (Rev. D) 09 Jun 2016
Technical article DC/DC converter datasheets – System losses demystified 25 Apr 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) 19 Apr 2016
Technical article DC/DC converter datasheets – System efficiency demystified 18 Apr 2016
User guide AN-2184 LMR10510/LMR10515/LMR10520 Demo Board (Rev. A) 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-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

LMR10510YSDDEMO — LMR10510 Small Footprint LLP Buck Regulator 3 MHz 1A Demo Board

The LMR10510/LMR10515/LMR10520 is a PWM DC/DC buck (step-down) regulator. With a switching frequency of 3MHz or 1.6MHz the overall solution size is very compact and requires a minimum number of components. The LMR10510/LMR10515/LMR10520 Demo Board is designed to provide the design engineer with a (...)

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Simulation model

LMR10510X PSpice Transient Model

SNVM130.ZIP (184 KB) - PSpice Model
Simulation model

LMR10510Y PSpice Transient Model

SNVM192.ZIP (184 KB) - PSpice Model
Simulation model

LMR10510X TINA-TI_STEADY_Reference Design

SNVM542.TSC (140 KB) - TINA-TI Reference Design
Simulation model

LMR10510X TINA-TI_LOAD_Transient Reference Design

SNVM543.TSC (83 KB) - TINA-TI Reference Design
Simulation model

LMR10510X TINA-TI_LINE_Transient Reference Design

SNVM544.TSC (77 KB) - TINA-TI Reference Design
Simulation model

LMR10510X TINA-TI Transient Spice Model

SNVM545.ZIP (11 KB) - TINA-TI Spice Model
Simulation model

LMR10510X TINA-TI_STARTUP_Reference Design

SNVM546.TSC (124 KB) - TINA-TI Reference Design
Simulation model

LMR10510X Unencrypted PSpice Transient Model

SNVM936.ZIP (2 KB) - PSpice Model
Simulation model

LMR10510Y Unencrypted PSpice Transient Model

SNVM937.ZIP (2 KB) - PSpice 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 (...)
Reference designs

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TI’s high performance ARM® Cortex®-A15 based AM57x processors also integrate C66x DSPs. These DSPs were designed to handle high signal and data processing tasks that are often required by industrial, automotive and financial applications. The AM57x OpenCL implementation makes it easy (...)
Reference designs

TIDEP0047 — Power and Thermal Design Considerations Using TI's AM57x Processor Reference Design

This is a reference design based on the AM57x processor and companion TPS659037 power management integrated circuit (PMIC).  This design specifically highlights important power and thermal design considerations and techniques for systems designed with AM57x and TPS659037.  It includes (...)
Reference designs

TIDA-00288 — 4 Port USB 3.0 Hub Reference Design

This verified reference design is a four-port USB 3.0 compliant hub. It provides simultaneous SuperSpeed and high-speed/full-speed connections on the upstream port and provides SuperSpeed, high-speed, full- speed, or low-speed connections on the downstream ports. The hub design provides power (...)
Package Pins Download
SOT-23 (DBV) 5 View options
WSON (NGG) 6 View options

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