Product details

Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1.5 Iq (Typ) (uA) 3300 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Rating Catalog Regulated outputs (#) 1 Control mode Current Mode Duty cycle (Max) (%) 94
Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1.5 Iq (Typ) (uA) 3300 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Rating Catalog Regulated outputs (#) 1 Control mode Current Mode Duty cycle (Max) (%) 94
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 1.5 A
  • 1.6-MHz (LMR10515X) and 3-MHz (LMR10515Y) 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
  • SOT-23 (2.92 × 2.84 × 1 mm) and
    WSON (3 × 3 × 0.8 mm) Packaging
  • Create a custom design using the LMR10515 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 1.5 A
  • 1.6-MHz (LMR10515X) and 3-MHz (LMR10515Y) 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
  • SOT-23 (2.92 × 2.84 × 1 mm) and
    WSON (3 × 3 × 0.8 mm) Packaging
  • Create a custom design using the LMR10515 with the WEBENCH® Power Designer

The LMR10515 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. With a minimum of external components, the LMR10515 is easy to use. The ability to drive 1.5-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 30ns, 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 LMR10515 is internally compensated, so it is simple to use and requires few external components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. 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 LMR10515 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 over-voltage protection.

The LMR10515 is internally compensated, so it is simple to use and requires few external components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. 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 LMR10515 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 LMR10515 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. With a minimum of external components, the LMR10515 is easy to use. The ability to drive 1.5-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 30ns, 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 LMR10515 is internally compensated, so it is simple to use and requires few external components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. 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 LMR10515 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 over-voltage protection.

The LMR10515 is internally compensated, so it is simple to use and requires few external components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. 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 LMR10515 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 LMR10515 5.5-VIN, 1.5-A Step-Down Voltage Regulator in SOT-23 and WSON Packages datasheet (Rev. D) PDF | HTML 10 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) PDF | HTML 24 Aug 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Absolute Maximum Ratings for Soldering (Rev. D) 09 Jun 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) PDF | HTML 19 Apr 2016
EVM User's 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.

Simulation model

LMR10515X PSpice Transient Model

SNVM158.ZIP (189 KB) - PSpice Model
Simulation model

LMR10515X TINA-TI Reference Design

SNVM553.TSC (495 KB) - TINA-TI Reference Design
Simulation model

LMR10515X TINA-TI Transient Reference Design

SNVM552.TSC (469 KB) - TINA-TI Reference Design
Simulation model

LMR10515X TINA-TI Transient Spice Model

SNVM554.ZIP (11 KB) - TINA-TI Spice Model
Simulation model

LMR10515X Unencrypted PSpice Transient Model

SNVM938.ZIP (2 KB) - PSpice Model
Simulation model

LMR10515Y PSpice Transient Model

SNVM171.ZIP (192 KB) - PSpice Model
Simulation model

LMR10515Y Unencrypted PSpice Transient Model

SNVM939.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 (...)
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SOT-23 (DBV) 5 View options
WSON (NGG) 6 View options

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