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LMR23615

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SIMPLE SWITCHER®, 36-V, 1.5-A Synchronous Step-Down Converter

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Data sheet

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open-in-new Compare alternates
Same functionality with different pin-out to the compared device
LMR33620 ACTIVE SIMPLE SWITCHER® 3.8V to 36V, 2A Synchronous Buck Converter With Ultra-Low EMI Smaller footprint, higher efficiency, lower IQ and lower EMI.
TPSM33615 ACTIVE 3-V to 36-V input, 1 to 15-V output, 1.5-A synchronous buck power module Smaller design with an integrated-inductor power module.

LMR23615

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Iq (typ) (µA) 75 Duty cycle (max) (%) 97
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Iq (typ) (µA) 75 Duty cycle (max) (%) 97
WSON (DRR) 12 9 mm² 3 x 3
  • 4-V to 36-V input range
  • 1.5-A Continuous output current
  • Integrated synchronous rectification
  • Current-mode control with internal compensation
  • Minimum switch ON-time: 60 ns
  • Adjustable switching frequency
  • PFM mode at light load
  • Frequency synchronization to external clock
  • 75-µA Quiescent current
  • Soft start into a prebiased load
  • High-duty-cycle operation supported
  • Output short-circuit protection with hiccup mode
  • Thermal protection
  • 12-Pin WSON wettable flanks package with PowerPAD™
  • Use the LMZM22602 module for faster time to market
  • Create a custom design using the LMR23615 with the WEBENCH Power Designer
  • 4-V to 36-V input range
  • 1.5-A Continuous output current
  • Integrated synchronous rectification
  • Current-mode control with internal compensation
  • Minimum switch ON-time: 60 ns
  • Adjustable switching frequency
  • PFM mode at light load
  • Frequency synchronization to external clock
  • 75-µA Quiescent current
  • Soft start into a prebiased load
  • High-duty-cycle operation supported
  • Output short-circuit protection with hiccup mode
  • Thermal protection
  • 12-Pin WSON wettable flanks package with PowerPAD™
  • Use the LMZM22602 module for faster time to market
  • Create a custom design using the LMR23615 with the WEBENCH Power Designer

The LMR23615 SIMPLE SWITCHER is an easy-to-use 36-V, 1.5-A synchronous step-down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various industrial applications for power conditioning from unregulated sources. Peak current mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes the device suitable for battery-powered systems. An ultra-low 2-µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop-compensation design and also minimizes the external components needed. An extended family is available in 2.5-A (LMR23625) and 3-A (LMR23630) load-current options in pin-to-pin compatible packages, allowing simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.

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The LMR23615 SIMPLE SWITCHER is an easy-to-use 36-V, 1.5-A synchronous step-down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various industrial applications for power conditioning from unregulated sources. Peak current mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes the device suitable for battery-powered systems. An ultra-low 2-µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop-compensation design and also minimizes the external components needed. An extended family is available in 2.5-A (LMR23625) and 3-A (LMR23630) load-current options in pin-to-pin compatible packages, allowing simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.

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Type Title Date
* Data sheet LMR23615 SIMPLE SWITCHER® 36-V, 1.5-A Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 11 Aug 2020
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
EVM User's guide LMR23615 EVM User's Guide 03 May 2017

Design & development

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

Evaluation board

LMR23615EVM — Wide Vin Synchronous Step-down Converter Evaluation Module

The LMR23615EVM is a fully assembled and tested circuit for evaluating the LMR23615DRR step-down converter. The LMR23615EVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 1.5A. The board has jumper connectors to select output options, enable or disable the (...)
User guide: PDF
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Simulation model

LMR23615 Non-Inverting and Inverting PSpice Transient Model

SNVMBD4.ZIP (222 KB) - PSpice Model
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Simulation model

LMR23615 Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMBD3.ZIP (6 KB) - PSpice Model
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WSON (DRR) 12 Ultra Librarian
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