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  • TPS57040QDRCRQ1

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TPS57040QDRCRQ1 Overview

The TPS57040-Q1 device is a 42-V 0.5-A step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, input supply current to 116 μA. Using the enable pin, shutdown supply current is reduced to 1.5 μA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power-good signal indicates the output is within 92% to 109% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS57040-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD package (DGQ) and a 10-pin SON package (DRC).



  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-mode Control Scheme
  • 116-μA Operating Quiescent Current
  • 1.5-μA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • Undervoltage and Overvoltage Power-good Output
  • Adjustable Undervoltage Lockout Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • Supported by SwitcherPro Software Tool

Product Parameters

  • genericPartNumber


  • partDescription

    Automotive 3.5V to 42V, 500mA Buck Converter with Eco-Mode™

  • statusDescription

    This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

  • packageQtyCarrier

    3000|LARGE T&R

  • orderablePartNumber


  • statusDisplay


  • packageQuantity


  • packagePins

    VSON (DRC)|10

Technical Documents

  • Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence ExterDetails>>

  • TPS54xx0-Q1 and TPS57xx0-Q1 Pin Open and Short Test Results (Rev. B)Details>>

  • TPS54xxx-Q1 and TPS57xxx-Q1 Devices EMC Performance Comparison StudyDetails>>

  • Passing CISPR25 Radiated Emissions Using the TPS54160-Q1 (Rev. A)Details>>

  • Design Considerations for DC-DC Converters in Fast-Input Slew Rate ApplicationsDetails>>

Other distributor's price

Distributor Part # Mfg. Description Price
digikey TPS57040QDRCRQ1 Rochester Electronics LLC IC REG BUCK ADJ 500MA 10VSON








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