LMR23630-Q1 Automotive Qualified SIMPLE SWITCHER® 4V to 36V,3A Synchronous Step-Down Converter | TI.com

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Automotive Qualified SIMPLE SWITCHER® 4V to 36V,3A Synchronous Step-Down Converter



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.


  • 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

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Product Option
  Min   Max Range
Vin  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 125°C


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Package Group Rating Type Package size: mm2:W x L (PKG)
LMR23630-Q1 Order now 4     36     1     34     3     1     200     2200     0.075     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
Wettable Flanks Package
Soft Start Fixed    
Current Mode     99     -40 to 125     SO PowerPAD | 8
SON | 12    
Automotive     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
12SON: 9 mm2: 3 x 3 (SON | 12)