TPS54231 (正在供货)

具有 Eco-mode™ 的 3.5 至 28V 输入、2A、570kHz 降压转换器

具有 Eco-mode™ 的 3.5 至 28V 输入、2A、570kHz 降压转换器 - TPS54231


  • TPS54331  -  Looking for a device with more output current? Try the TPS54331.
  • TPS54239E  -  Looking for a device with lower input voltage? Try the TPS54239E.
  • TPS54232  -  Looking for a device with higher switching frequency? Try the TPS54232.
  • TPS54233  -  Looking for a device with lower switching frequency? Try the TPS54233.


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.


  • 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
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • Fixed 570-kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent
  • Adjustable Slow-Start Limits Inrush
  • 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
    • 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


参数 与其它产品相比 降压转换器 (集成开关)

Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Package Group
TPS54231 TPS54331 TPS54336A TPS54531
3.5    3.5    4.5    3.5   
28    28    28    28   
0.8    0.8    0.8    0.8   
25    25    25    25   
2    3    3    5   
1    1    1    1   
570    570    340    570   
570    570    340    570   
0.075    0.11    0.6    0.11   
Light Load Efficiency
UVLO Adjustable   
Light Load Efficiency
UVLO Adjustable   
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable   
Light Load Efficiency   
Current Mode    Current Mode    Current Mode    Current Mode   
90    90    90    90   
-40 to 150    -40 to 150    -40 to 150    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
SO PowerPAD   
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WEBENCH® Designer TPS54231

  最小   最大 范围
输入电压  V 3.5 to 28.0V
输出电压  V 0.8 to 25V
输出电流  A ≤ 2A
环境温度  °C -40 to 150°C

覆盖面积 BOM成本 效率

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