DESCRIPTION

The L7900AC series of three-terminal negative regulators is available in TO-220 and D2PAK packages and several fixed output voltages. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L7800A positive standard series, they are particularly suited for split power supplies. In addition, the -5.2V is also available for ECL system. If adequate heat sinking is provided, they can deliver over 1.5A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

■ OUTPUT CURRENT UP TO 1.5 A

■ OUTPUT VOLTAGESOF -5; -5.2; -6; -8; -12; -15; -18; -20; -22; -24V

■ THERMAL OVERLOAD PROTECTION

■ SHORT CIRCUIT PROTECTION

■ OUTPUT TRANSITION SOA PROTECTION

L7912ACD2T屬于集成電路（IC） > 線性 + 開關穩(wěn)壓器。意法半導體（ST）集團制造生產的L7912ACD2T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換為熱量。對于大多數應用而言，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。