DESCRIPTION

The L78M00AB series of three-terminal positive regulators is available in TO-220 and DPAK packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

■ OUTPUT CURRENT TO 0.5A

■ OUTPUT VOLTAGES OF 5; 6; 8; 9; 10; 12; 15; 18; 20; 24V

■ THERMAL OVERLOAD PROTECTION

■ SHORT CIRCUIT PROTECTION

■ OUTPUT TRANSITION SOA PROTECTION

■ ±2 OUTPUT VOLTAGE TOLERANCE

■ GUARANTEED IN EXTENDED TEMPERATURE RANGE

L78M18ABDT屬于集成電路（IC） > 線性 + 開關穩(wěn)壓器。意法半導體（ST）集團制造生產(chǎn)的L78M18ABDT穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。