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


Product details


Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 2.5 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, Power Good, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 WSON (DRR) 12 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)


  • 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
open-in-new Find other Buck converters (integrated switch)


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.

open-in-new Find other Buck converters (integrated switch)

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet LMR23625-Q1 SIMPLE SWITCHER® 36-V, 2.5-A Synchronous Step-Down Converter datasheet (Rev. B) Mar. 01, 2018
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) Apr. 15, 2021
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide LMR23625C-Q1 EVM User's Guide Nov. 08, 2016

Design & development

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

Hardware development

document-generic User guide
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 (...)
  • 4V to 36V Input Voltage Range
  • Jumper Selectable Output Options (5V or 3.3V)
  • Up to 2.5A Output Current
  • 2.1MHz Switching Frequency
  • Frequency Synchronization to External Clock

Design tools & simulation

SNVMAU2.ZIP (888 KB) - PSpice Model
SNVMAU3.ZIP (6 KB) - PSpice Model
SNVMAU8.ZIP (7 KB) - PSpice Model
SNVMAU9.ZIP (190 KB) - PSpice Model
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 (...)
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options
WSON (DRR) 12 View options

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​