TPS5450DDA

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TPS5450DDA

5.5V to 36V Input, 5A, 500kHz Step Down Converter

Packaging

Package | PIN: DDA | 8
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $4.63
10-24 $4.16
25-99 $3.89
100-249 $3.49
250-499 $3.25
500-749 $2.83
750-999 $2.45
1000+ $2.40

Features

  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 5-A Continuous (6-A Peak) Output Current
  • High Efficiency Greater Than 90% 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 Part Count
  • Fixed 500-kHz Switching Frequency for Small Filter Size
  • 18-µA Shutdown Supply Current
  • 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 Range
  • Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™
    Package

Texas Instruments  TPS5450DDA

The TPS5450 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 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 ENA pin, shutdown supply current is reduced to 18 μA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

The TPS5450 device is available in a thermally-enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.