L4936N集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF中文資料

L4936N屬于集成電路（IC）的線性+開關穩(wěn)壓器。由意法半導體集團制造生產的L4936N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(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。

DESCRIPTION

TheL4936N/NHare monolithic integrateddual voltage regulators with two very low dropout outputs and additionalfunctionssuchas power-onresetand input voltage sense. They are designed for supplying microcomputer controlled systems specially in automotive applications.

■ STANDBY OUTPUT VOLTAGE PRECISION 5V ± 2

■ OUTPUT2 TRACKED TO THE STANDBY OUTPUT

■ OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE

■ VERY LOW QUIESCENT CURRENT, LESS THAN 250μA, IN STANDBY MODE

■ OUTPUT 2 VOLTAGE SETTABLE FROM 5 TO 20V

■ OUTPUT CURRENTS : I01 = 50mA,I02 = 500mA

■ VERY LOW DROPOUT (max 0.4V/0.6V)

■ OPERATING TRANSIENT SUPPLY VOLTAGE UP TO 40V

■ POWER-ON RESET CIRCUIT SENSING THE STANDBY OUTPUT VOLTAGE

■ POWER-ON RESET DELAY PULSE DEFINED BY THE EXTERNAL CAPACITOR

■ EARLY WARNING OUTPUT FOR SUPPLY UNDER VOLTAGE

■ THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTIONS