Product details

Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 3 Iq (Typ) (uA) 75 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1
Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 3 Iq (Typ) (uA) 75 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1
HSOIC (DDA) 8 19 mm² 4.9 x 3.9 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 2
    • Device CDM ESD Classification:
      • SOIC and WSON With RT — Level C4B
      • WSON With PGOOD — Level C5
  • 4-V to 36-V Input Range
  • 3-A Continuous Output Current
  • Minimum Switch-On Time: 60 ns
  • Internal Compensation for Ease of Use
  • 400 kHz Switching Frequency and Adjustable Switching Frequency Options
  • 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 LMR23630-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 2
    • Device CDM ESD Classification:
      • SOIC and WSON With RT — Level C4B
      • WSON With PGOOD — Level C5
  • 4-V to 36-V Input Range
  • 3-A Continuous Output Current
  • Minimum Switch-On Time: 60 ns
  • Internal Compensation for Ease of Use
  • 400 kHz Switching Frequency and Adjustable Switching Frequency Options
  • 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 LMR23630-Q1 With the WEBENCH® Power Designer

The LMR23630-Q1 SIMPLE SWITCHER® is an easy-to-use 36-V, 3-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 constant frequency 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 2.5-A (LMR23625-Q1) load current options in pin-to-pin compatible package 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 LMR23630-Q1 SIMPLE SWITCHER® is an easy-to-use 36-V, 3-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 constant frequency 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 2.5-A (LMR23625-Q1) load current options in pin-to-pin compatible package 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 LMR23630-Q1 SIMPLE SWITCHER® 36-V, 3-A Synchronous Step-Down Converter datasheet (Rev. B) 05 Mar 2018
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
User guide LMR23630A-Q1 EVM User's Guide 08 Nov 2016

Design & development

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Evaluation board

LMR23630EVM — LMR23630DDR Wide Vin Synchronous Step-down Converter Evaluation Module

The LMR23630EVM is a fully assembled and tested circuit for evaluating the LMR23630DRR step-down converter. The LMR23630EVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 3A. The board has jumper connectors to select output options, enable or disable the (...)
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LMR23630A Non-Inverting and Inverting PSpice Transient Model

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LMR23630AF Non-Inverting and Inverting PSpice Transient Model

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LMR23630AF Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMAU1.ZIP (7 KB) - PSpice Model
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LMR23630 Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMBC1.ZIP (7 KB) - PSpice Model
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LMR23630 Non-Inverting and Inverting PSpice Transient Model

SNVMBC2.ZIP (223 KB) - PSpice Model
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LMR23630F Non-Inverting and Inverting PSpice Transient Model

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LMR23630F Unencrypted Non-Inverting and Inverting PSpice Transient Model

SNVMBC4.ZIP (7 KB) - PSpice Model
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LMR23630AP Non-Inverting and Inverting PSpice Transient Model

SNVMBC5.ZIP (224 KB) - PSpice Model
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LMR23630AP Unencrypted Non-Inverting and Inverting PSpice Transient Model

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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 (...)
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SO PowerPAD (DDA) 8 View options
WSON (DRR) 12 View options

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