LMR36015

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4.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter

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Product details

Parameters

Vin (Min) (V) 4.2 Vin (Max) (V) 60 Vout (Min) (V) 1 Vout (Max) (V) 57 Iout (Max) (A) 1.5 Iq (Typ) (mA) 0.023 Iq (Typ) (uA) 23 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 1000 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RNX) 12 6 mm² 3 x 2 open-in-new Find other Buck converters (integrated switch)

Features

  • Functional Safety-Capable
  • Designed for reliable and rugged applications
    • Input transient protection up to 66 V
    • Junction temperature range –40°C to +150°C
    • 0.4-V dropout with 1.5-A load (typical)
  • Suited for scalable industrial power supplies
  • Low power dissipation across load spectrum
    • 90% efficiency at 400 kHz (24 VIN, 5 VOUT, 1 A)
    • 93% efficiency at 400 kHz (12 VIN, 5 VOUT, 1 A)
    • Increased light load efficiency in PFM
    • Low operating quiescent current of 26 µA
  • Small 2-mm × 3-mm HotRod™ package
  • Solution with few external components
  • LMR36006-Q1 and LMR36015-Q1 available in 400 kHz and 2.1 MHz, adjustable output, and fixed 3.3 VOUT
  • Optimized for ultra low EMI requirements
    • Meets CISPR25 class 5 standard
    • Hotrod™ package minimizes switch node ringing
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
  • Create a custom design using the LMR36015 with the WEBENCH Power Designer

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Description

The LMR36015 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, up to 1.5 A of output current is delivered over a wide input voltage range of 4.2 V to 60 V. Tolerance goes up to 66 V.The transient tolerance reduces the necessary design effort to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36015 uses peak-current-mode control to provide optimal efficiency and output voltage accuracy. Load transient performance is improved with FPWM feature in the 1-MHz regulator. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status eliminating the requirement for an external supervisor.

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Technical documentation

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Type Title Date
* Datasheet LMR36015 4.2-V to 60-V, 1.5-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. D) Sep. 01, 2020
Application notes Working with Inverting Buck-Boost Converters (Rev. A) May 14, 2020
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Technical articles How semiconductor technologies are changing automotive lighting roadmaps Oct. 23, 2019
Application notes Achieving CISPR-22 EMI Standards With HotRod™ Buck Designs (Rev. A) Sep. 17, 2019
Application notes High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision Aug. 05, 2019
Application notes Understanding Mode Transitions for LMR33620/30 and LMR36006/15 Apr. 04, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems Sep. 10, 2018
Technical articles How a DC/DC converter package and pinout design can enhance automotive EMI performance Sep. 04, 2018
Technical articles A review of EMI standards, part 2 – radiated emissions Jul. 05, 2018
User guides LMR360xxxEVM User's Guide Mar. 14, 2018
Application notes Output Ripple Voltage for Buck Switching Regulator (Rev. A) Oct. 13, 2014
Application notes Accurately measuring efficiency of ultralow-IQ devices Jan. 22, 2014
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

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
49
Description
The LMR36015 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR36016 synchronous step-down converter.  The LMR36015 provides exceptional efficiency and accuracy in a very small solution size.
Features
  • Inegrated synchronous rectification
  • Low operating quiescent current
  • High efficiency at light loads
  • Short minimum on-time

Design tools & simulation

SIMULATION MODELS Download
SNVMBH9.ZIP (7 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBI0.ZIP (173 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBQ5.ZIP (8 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBQ6.ZIP (152 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBR1.ZIP (154 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBR2.ZIP (8 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBT1.ZIP (155 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBT2.ZIP (161 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBT7.ZIP (160 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBU9.TSC (649 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOLS Download
SNVC234.ZIP (442 KB)

Reference designs

REFERENCE DESIGNS Download
Wide Vin Power Supply Reference Design for Space-Constrained Industrial Sensors
PMP15040 — This reference design provides an example of how to power FPGAs, ASICs, or MCUs in industrial sensor applications when space-constraints are a primary concern. The wide 6-V to 60-V input voltage range and the use of ultra-small and highly efficient DC/DC converters makes the design well suited for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Safety power supply for motor drives reference design
TIDA-010052 — This reference design implements a safe-power supply for powering up microcontrollers in an architecture featuring two MCUs. The design has several protection features including overvoltage protection and short circuit protection to prevent the MCUs from getting damaged. The DC/DCs, LMR36515 and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Two-Stage Power Supply Reference Design for Field Transmitters
PMP15039 — This dual output reference design provides an example of how to power FPGAs, ASICs, or MCUs when space-constraints are a primary concern. The wide 6-V to 60-V input voltage range and the use of ultra-small and highly efficient DC/DC converters makes the design well suited for applications like (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN-HR (RNX) 12 View options

Ordering & quality

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