LMR10520

ACTIVE

5.5Vin, 2A Step-Down Voltage Regulator in SOT-23 and LLP

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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) 2 Iq (Typ) (mA) 3.3 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

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 2 A
  • 1.6-MHz (LMR10520X) and 3-MHz (LMR10520Y) 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
  • WSON (3 × 3 × 0.8 mm) Packaging
  • Create a custom design using the LMR10520 with the WEBENCH® Power Designer

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Description

The LMR10520 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in 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 LMR10520 is easy to use. The ability to drive 2-A loads with an internal 150-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 LMR10520 is internally compensated, so it is simple to use and requires few external components. 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 LMR10520 uses 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 LMR10520 5.5-VIN, 2-A Step-Down Voltage Regulator in WSON datasheet (Rev. C) Jun. 13, 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
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Absolute Maximum Ratings for Soldering (Rev. D) Jun. 09, 2016
Application notes Semiconductor and IC Package Thermal Metrics (Rev. C) Apr. 19, 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-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

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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)
  • 2A Output Current
  • Switching Frequency of 3 MHz
  • Small Solution Size (13 mm x 12 mm)

Design tools & simulation

SIMULATION MODELS Download
SNVM159.ZIP (193 KB) - PSpice Model
SIMULATION MODELS Download
SNVM193.ZIP (194 KB) - PSpice Model
SIMULATION MODELS Download
SNVM940.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SNVM941.ZIP (2 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
WSON (NGG) 6 View options

Ordering & quality

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