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LMR23625-Q1

ACTIVE

Automotive Qualified SIMPLE SWITCHER®, 4V to 36V, 2.5A Synchronous Step-Down Converter

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Data sheet

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LMR33630AP-Q1 ACTIVE Automotive 3.8-V to 36-V, 3-A synchronous step-down voltage converter Smaller footprint, higher efficiency, lower IQ and lower EMI.

LMR23625-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 36 Vin (min) (V) 4 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, Wettable flanks package Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 75 Duty cycle (max) (%) 99 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 36 Vin (min) (V) 4 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, Wettable flanks package Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 75 Duty cycle (max) (%) 99 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 WSON (DRR) 12 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H1C
    • Device CDM ESD Classification Level C4A
  • 4-V to 36-V Input Range
  • 2.5-A Continuous Output Current
  • Integrated Synchronous Rectification
  • Minimum Switch-On Time: 60 ns
  • Internal Compensation for Ease of Use
  • Fixed 2.1-MHz Switching Frequency
  • PFM and Forced PWM Mode Options at Light Load
  • Frequency Synchronization to External Clock
  • 75-µA Quiescent Current at No Load for PFM Option
  • Power-Good Option
  • Soft Start into a Prebiased Load
  • High Duty-Cycle Operation Supported
  • Output Short-Circuit Protection With Hiccup Mode
  • 8-Pin HSOIC and 12-Pin WSON Wettable Flank with PowerPAD™ Package Options
  • Create a Custom Design Using the LMR23625-Q1 With the WEBENCH® Power Designer
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H1C
    • Device CDM ESD Classification Level C4A
  • 4-V to 36-V Input Range
  • 2.5-A Continuous Output Current
  • Integrated Synchronous Rectification
  • Minimum Switch-On Time: 60 ns
  • Internal Compensation for Ease of Use
  • Fixed 2.1-MHz Switching Frequency
  • PFM and Forced PWM Mode Options at Light Load
  • Frequency Synchronization to External Clock
  • 75-µA Quiescent Current at No Load for PFM Option
  • Power-Good Option
  • Soft Start into a Prebiased Load
  • High Duty-Cycle Operation Supported
  • Output Short-Circuit Protection With Hiccup Mode
  • 8-Pin HSOIC and 12-Pin WSON Wettable Flank with PowerPAD™ Package Options
  • Create a Custom Design Using the LMR23625-Q1 With the WEBENCH® Power Designer

The LMR23625-Q1 SIMPLE SWITCHER® is an easy-to-use 36-V, 2.5-A synchronous step down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various applications from industrial to automotive 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 it suitable for battery powered systems. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components. The device has option for fixed-frequency, forced-pulse-width-modulation (FPWM) mode to achieve small output voltage ripple at light load. An extended family is available in 1-A (LMR23610-Q1), 1.5-A (LMR23615-Q1), and 3-A (LMR23630-Q1) load current options in pin-to-pin compatible packages, which allows 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.

The LMR23625-Q1 SIMPLE SWITCHER® is an easy-to-use 36-V, 2.5-A synchronous step down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various applications from industrial to automotive 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 it suitable for battery powered systems. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components. The device has option for fixed-frequency, forced-pulse-width-modulation (FPWM) mode to achieve small output voltage ripple at light load. An extended family is available in 1-A (LMR23610-Q1), 1.5-A (LMR23615-Q1), and 3-A (LMR23630-Q1) load current options in pin-to-pin compatible packages, which allows 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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Technical documentation

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Type Title Date
* Data sheet LMR23625-Q1 SIMPLE SWITCHER® 36-V, 2.5-A Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 01 Mar 2018
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 15 Apr 2021
EVM User's guide LMR23625C-Q1 EVM User's Guide 08 Nov 2016

Design & development

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

Evaluation board

LMR23625CFPEVM — LMR23625CFPDDR Wide Vin Synchronous Step-down Converter Evaluation Module

The LMR23625CFPEVM is a fully assembled and tested circuit for evaluating the LMR23625CFPDRR step-down converter. The LMR23625CFPEVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 2.5A. The board has jumper connectors to select output options, enable or disable (...)
User guide: PDF
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Simulation model

LMR23625C Non-Inverting and Inverting PSpice Transient Model

SNVMAU2.ZIP (888 KB) - PSpice Model
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Simulation model

LMR23625C Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMAU3.ZIP (6 KB) - PSpice Model
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Simulation model

LMR23625CF Non-Inverting and Inverting PSpice Transient Model

SNVMAU9.ZIP (190 KB) - PSpice Model
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Simulation model

LMR23625CF Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMAU8.ZIP (7 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian
WSON (DRR) 12 Ultra Librarian
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