TPS54331DDA

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TPS54331DDA

3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode

Packaging

Package | PIN: DDA | 8
Temp: S (-40 to 150)
Carrier: Partial Tube
Qty Price
1-9 $1.85
10-24 $1.65
25-99 $1.54
100-249 $1.34
250-499 $1.24
500-749 $1.04
750-999 $0.85
1000+ $0.78

Features

  • 3.5 to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current
  • High Efficiency at Light Loads With a Pulse Skipping Eco-mode™
  • Fixed 570 kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent Current
  • Adjustable Slow-Start Limits Inrush Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package or Thermally Enhanced SOIC8 PowerPAD™ Package
  • Create a Custom Design with WEBENCH Tools

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Texas Instruments  TPS54331DDA

The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a lowRDS(on) high-side MOSFET. To increase efficiency at light loads, a pulseskipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply-currentallows the device to be used in battery-powered applications. Current mode control with internalslope compensation simplifies the external compensation calculations and reduces component countwhile allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis ofthe input undervoltage lockout. An overvoltage transient protection circuit limits voltageovershoots during startup and transient conditions. A cycle-by-cycle current-limit scheme,frequency foldback and thermal shutdown protect the device and the load in the event of an overloadcondition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD packagethat have been internally optimized to improve thermal performance.