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


Package | PIN: DRR | 12
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.17
10-24 $2.86
25-99 $2.66
100-249 $2.33
250-499 $2.19
500-749 $1.86
750-999 $1.57
1000+ $1.50


  • 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™
  • Create a Custom Design Using the LMR23615 With the WEBENCH® Power Designer

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Texas Instruments  LMR23615DRRT

The LMR23615 SIMPLE SWITCHER® is aneasy-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 unregulatedsources. Peak current mode control is employed to achieve simple control-loop compensation andcycle-by-cycle current limiting. A quiescent current of 75 µA makes the device suitable forbattery-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-compensationdesign 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, allowingsimple, optimum PCB layout. A precision enable input allows simplification of regulator control andsystem power sequencing. Protection features include cycle-by-cycle current limit, hiccup-modeshort-circuit protection, and thermal shutdown due to excessive power dissipation.