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Automotive 5.5V to 36V, 500kHz Fixed Frequency 3A Buck Converter


Package | PIN: DDA | 8
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.98
10-24 $3.58
25-99 $3.34
100-249 $3.00
250-499 $2.80
500-749 $2.43
750-999 $2.11
1000+ $2.06


  • Qualified for Automotive Applications
  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 3-A Continuous (4-A Peak) Output Current
  • High Efficiency up to 95% Enabled by 110-mΩ
    Integrated MOSFET Switch
  • Wide Output Voltage Range: Adjustable Down to
    1.22 V With 1.5% Initial Accuracy
  • Internal Compensation Minimizes External Parts
  • Fixed 500-kHz Switching Frequency for Small
    Filter Size
  • Improved Line Regulation and Transient
    Response by Input Voltage Feed Forward
  • System Protected by Overcurrent Limiting,
    Overvoltage Protection, and Thermal Shutdown
  • –40°C to 125°C Operating Junction Temperature
  • Available in Small Thermally Enhanced 8-Pin
    SOIC PowerPAD Package

Texas Instruments  TPS5430QDDARQ1

The TPS5430-Q1 is a high output current PWM converter that integrates a low-resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions, an undervoltage lockout (UVLO) circuit to prevent start-up until the input voltage reaches 5.5 V, an internally set slow-start circuit to limit inrush currents, and a voltage feed-forward circuit to improve the transient response. Using the enable (ENA) pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection (OVP), and thermal shutdown. To reduce design complexity and external component count, the TPS5430-Q1 feedback loop is internally compensated. The TPS5430-Q1 regulates a wide variety of power sources including 24-V buses.

The TPS5430-Q1 device is available in a thermally enhanced, easy-to-use 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and the WEBENCH® software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.