TEXAS INSTRUMENTS  TPS54428DDA  DC-DC Switching Buck Step Down Regulator, Adjustable, 4.5V-18Vin, 760mV-7Vout, 4Aout, PPAD-8


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Product Overview

The TPS54428DDA is an adaptive on-time D-CAP2™ mode synchronous Buck Converter for use with networking home terminal. The TPS54428 enables system designers to complete the suite of various end-equipment power bus regulators with low component count and low standby current solution. The main control loop for the TPS54428 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54428 to maintain high efficiency during lighter load conditions. The TPS54428 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP and ultra-low ESR ceramic capacitors. The device operates from 4.5 to 18V VIN input. The output voltage can be programmed between 0.76 and 7V.
  • D-CAP2™ mode enables fast transient response
  • Low output ripple and allows ceramic output capacitor
  • Highly efficient integrated FETs optimized for lower duty cycle applications
  • High initial bandgap reference accuracy
  • Adjustable soft-start
  • pre-biased soft-start
  • Cycle-by-cycle overcurrent limit
  • Auto-skip Eco-mode™ for high efficiency at light load
  • High efficiency, less than 10µA at shutdown
  • Green product and no Sb/Br


Power Management; Consumer Electronics; Communications & Networking
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Product Information

  • Input Voltage Min 4.5V
  • Input Voltage Max 18V
  • No. of Outputs 1Outputs
  • DC / DC Converter IC Case SO PowerPAD
  • No. of Pins 8Pins
  • Output Current 4A
  • Output Voltage Min 760mV
  • Output Voltage Max 7V
  • Switching Frequency 650kHz
  • Topology Synchronous Buck (Step Down)
  • Operating Temperature Max 85°C
  • Packaging Cut Tape
  • Product Range -
  • MSL -
  • SVHC No SVHC (15-Jun-2015)

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  • CAD CadSoft_EAGLE (2.56KB) EN
  •   Simulation Model (71.79KB) EN
  • Product Change Notice (228.10KB) EN
  • Availability

    Availability:  312

    • 312 in stock for next day delivery (UK stock)
    Check stock and lead times
      More stock available week commencing 12/09/16

    Price for: Each

    Minimum order quantity: 1

    Order multiple quantity: 1

    Price: £0.98 £0.98



    Quantity List Price
    1 - 9 £0.98
    10 - 99 £0.84
    100 - 249 £0.82
    250 - 499 £0.803
    500 - 899 £0.786
    900 - 2999 £0.77
    3000 - 5999 £0.753
    6000+ £0.736

    Legislation and Environmental

    • Moisture Sensitivity Level: -
    • Country of Origin: China

      Country in which last significant manufacturing process was carried out

    • RoHS Compliant: Yes
        RoHS Certificate of Compliance
    • Tariff No: 85423190
    • Weight (kg): .012
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