Voltage References | TLV431B

低压精确可调分路稳压器

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TLV431A 系列和 B 系列为精确低电压分路稳压器，可基于 1.24V 至 16V 的宽电压范围进行编程。 TLV431A 系列在 25 °C 下的保证参考精度为 1.0%，在 -40 °C 至 85 °C 的完整工业温度范围内精度为 2.0%。 对于 TLV431B 系列，准确度更高，分别为 0.5% 和 1.0%。 此类器件具有明确的低电流开启特性，在 100mA 至 20mA 的运行电流范围内的动态阻抗低至 0.20 W。 此功能组合使得此系列可完美替代需要精确参考电压的多种应用电路中的齐纳二极管。 结合使用光耦合器时，TLV431A 可用作误差放大器，用于控制隔离低输出电压（3.0V 至 3.3V）开关电源中的反馈环路。 此类器件采用经济型 TO-92 和微型尺寸 TSOP-5 和 SOT23-3 封装。

  • Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply Error Amplifier
  • Adjustable Voltage or Current Linear and Switching Power Supplies
  • Voltage Monitoring
  • Current Source and Sink Circuits
  • Analog and Digital Circuits Requiring Precision References
  • Low Voltage Zener Diode Replacements
  • Programmable Output Voltage Range of 1.24 V to 16 V
  • Voltage Reference Tolerance +/-1.0%
  • Sharp Low Current Turn-On Characteristic
  • Low Dynamic Output Impedance of 0.20 W from 100 mA to 20 mA
  • Wide Operating Current Range of 50 mA to 20 mA
  • Micro Miniature TSOP-5 and TO-92 Packages
  • Pb-Free Package is Available

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