TPS54231D

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TPS54231D

3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™

Packaging

Package | PIN: D | 8
Temp: S (-40 to 150)
Carrier: Partial Tube
Qty Price
1-9 $1.56
10-24 $1.40
25-99 $1.30
100-249 $1.13
250-499 $1.05
500-749 $0.88
750-999 $0.72
1000+ $0.66

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 2 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
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes,
      CPE Equipment, LCD Displays, Peripherals, and
      Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners

Texas Instruments  TPS54231D

The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.