LM431AC 可調精密并聯
穩壓器的典型應用。 TL431 和 TL431A 是 3 端子可調并聯穩壓器，在適用的汽車和商業溫度范圍內具有指定的熱穩定性。輸出電壓可通過兩個外部電阻設置為 VREF（約 2.5V）和 36V 之間的任意值。這些器件的典型
輸出阻抗為 0.2 歐姆。有源輸出電路提供非常敏銳的開啟特性，使這些器件成為許多應用中
齊納二極管的絕佳替代品，例如板載調節、可調
電源和
開關電源
說明
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Typical Application for LM431AC Adjustable Precision Shunt Regulator. The TL431 and TL431A are 3-terminal adjustable shunt regulators with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. These devices have a typical output impedance of 0.2 ohm. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies
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