LMR36015

ACTIVE

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

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4.2 Vin (max) (V) 60 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 57 Iq (typ) (µA) 23 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4.2 Vin (max) (V) 60 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 57 Iq (typ) (µA) 23 Duty cycle (max) (%) 98
VQFN-HR (RNX) 12 6 mm² 3 x 2
  • 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 2 6 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
  • 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 2 6 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

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.

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
* Data sheet LMR36015 4.2-V to 60-V, 1.5-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. D) PDF | HTML 01 Sep 2020
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note Working with Inverting Buck-Boost Converters (Rev. B) PDF | HTML 18 Oct 2022
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 Jul 2021
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
Functional safety information LMR36015-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. C) PDF | HTML 16 Apr 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article How semiconductor technologies are changing automotive lighting roadmaps PDF | HTML 24 Oct 2019
Application note Achieving CISPR-22 EMI Standards With HotRod™ Buck Designs (Rev. A) 17 Sep 2019
Application note Understanding Mode Transitions for LMR33620/30 and LMR36006/15 04 Apr 2019
Technical article How a DC/DC converter package and pinout design can enhance automotive EMI perform PDF | HTML 04 Sep 2018
Technical article A review of EMI standards, part 2 – radiated emissions PDF | HTML 05 Jul 2018
Technical article A review of EMI standards, part 1 – conducted emissions PDF | HTML 28 Jun 2018
Technical article Effects of IC package on EMI performance PDF | HTML 22 May 2018
User guide LMR360xxxEVM User's Guide 14 Mar 2018
Application note Output Ripple Voltage for Buck Switching Regulator (Rev. A) 13 Oct 2014
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014
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

Design & development

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

Evaluation board

LMR36015AEVM — Synchronous step-down converter evaluation module

The LMR36015 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR36015 synchronous step-down converter.  The LMR36015 provides exceptional efficiency and accuracy in a very small solution size.
User guide: PDF
Not available on TI.com
Simulation model

LMR34215FA-Q1 Unencrypted PSPICE TRANSIENT MODEL

SNVMBT7.ZIP (160 KB) - PSpice Model
Simulation model

LMR34215FSC5-Q1 Unencrypted PSPICE TRANSIENT MODEL

SNVMBT2.ZIP (161 KB) - PSpice Model
Simulation model

LMR34215SC5-Q1 Unencrypted PSPICE TRANSIENT MODEL

SNVMBT1.ZIP (155 KB) - PSpice Model
Simulation model

LMR36015A Non-Inverting and Inverting PSpice Transient Model

SNVMBI0.ZIP (173 KB) - PSpice Model
Simulation model

LMR36015B Non-Inverting and Inverting PSpice Transient Model

SNVMBR1.ZIP (154 KB) - PSpice Model
Simulation model

LMR36015FB Non-Inverting and Inverting PSpice Transient Model

SNVMBQ6.ZIP (152 KB) - PSpice Model
Simulation model

LMR36015FB TINA-TI Transient Model

SNVMBU9.TSC (649 KB) - TINA-TI Spice Model
Calculation tool

SNVC234 Mode Transitions Calculator LMR336x0 LMR360xx

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LMR33620 SIMPLE SWITCHER® 3.8V to 36V, 2A Synchronous Buck Converter With Ultra-Low EMI LMR33620-Q1 3.8-V to 36-V, 2-A synchronous step-down voltage converter LMR33630 SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI LMR33630-Q1 3.8-V to 36-V, 3-A synchronous step-down voltage converter LMR36006 4.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter LMR36006-Q1 4.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter LMR36015 4.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter LMR36015-Q1 4.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter
Calculation tool

SNVR484 LMR336x0 Component Calculator

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LMR33620 SIMPLE SWITCHER® 3.8V to 36V, 2A Synchronous Buck Converter With Ultra-Low EMI LMR33620-Q1 3.8-V to 36-V, 2-A synchronous step-down voltage converter LMR33630 SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI LMR33630-Q1 3.8-V to 36-V, 3-A synchronous step-down voltage converter LMR33640 SIMPLE SWITCHER® 3.8-V to 36-V, 4-A step-down converter in SOIC-8 package LMR36015 4.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter LMR36015-Q1 4.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter
Reference designs

PMP15040 — Wide Vin Power Supply Reference Design for Space-Constrained Industrial Sensors

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-010052 — Safety power supply for motor drives reference design

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010055 — Non-isolated power architecture with diagnostics reference design for protection relay modules

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP15039 — Two-Stage Power Supply Reference Design for Field Transmitters

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 (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RNX) 12 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

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