LMR10510

ACTIVE

3V to 5.5V, 1A Step-Down DC/DC Switching Regulator in SOT-23 Package

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Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Control mode Current Mode Duty cycle (Max) (%) 94 Type Converter Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 WSON (NGG) 6 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • 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

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Description

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
* Datasheet LMR10510 5.5-VIN, 1-A Step-Down Voltage Regulator in SOT-23 and WSON Packages datasheet (Rev. C) Jun. 07, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Technical articles Quantifying the value of wide VIN Jun. 15, 2016
Application notes Absolute Maximum Ratings for Soldering (Rev. D) Jun. 09, 2016
Technical articles DC/DC converter datasheets – System losses demystified Apr. 25, 2016
Application notes Semiconductor and IC Package Thermal Metrics (Rev. C) Apr. 19, 2016
Technical articles DC/DC converter datasheets – System efficiency demystified Apr. 18, 2016
Selection guides SIMPLE SWITCHER Overview Brochure (Rev. B) Mar. 18, 2016
User guides AN-2184 LMR10510/LMR10515/LMR10520 Demo Board (Rev. A) Apr. 26, 2013
Application notes AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) Apr. 24, 2013
Application notes AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) Apr. 23, 2013
Application notes AN-1197 Selecting Inductors for Buck Converters (Rev. B) Apr. 23, 2013
Application notes AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) Apr. 23, 2013
Application notes AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) Apr. 23, 2013
Application notes AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) Apr. 23, 2013
Application notes AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) Apr. 23, 2013
Application notes AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) Apr. 23, 2013
Application notes AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) Apr. 23, 2013
Application notes Input and Output Capacitor Selection Sep. 19, 2005
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations Jul. 12, 2005
Application notes AN-643 EMI/RFI Board Design (Rev. B) May 03, 2004

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$20.00
Description

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 (...)

Features
  • 3.0V to 5.5V Input Voltage Range
  • 1.8V Output Voltage (Default Setting)
  • 1A Output Current
  • Switching Frequency of 3 MHz
  • Small Solution Size (13 mm x 12 mm)

Design tools & simulation

SIMULATION MODELS Download
SNVM130.ZIP (184 KB) - PSpice Model
SIMULATION MODELS Download
SNVM192.ZIP (184 KB) - PSpice Model
SIMULATION MODELS Download
SNVM542.TSC (140 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM543.TSC (83 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM544.TSC (77 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM545.ZIP (11 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM546.TSC (124 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM936.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SNVM937.ZIP (2 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Monte-Carlo Simulation on AM57x Using OpenCL for DSP Acceleration Reference Design
TIDEP0046 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Power and Thermal Design Considerations Using TI's AM57x Processor Reference Design
TIDEP0047 This TI Design (TIDEP0047) is a reference platform based on the AM57x processor and companion TPS659037 power management integrated circuit (PMIC).  This TI Design specifically highlights important power and thermal design considerations and techniques for systems designed with AM57x and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
4 Port USB 3.0 Hub Reference Design
TIDA-00288 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options
WSON (NGG) 6 View options

Ordering & quality

Support & training

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