DESCRIPTION

The L4620 is an integratedcircuit, designedfor the liquid level control in automotive applications. The liquid level is indicated by an attenuation between transmitted and received signal across a sensor tip in the lquid. If the attenuationexceedesan internal threshold- sensortip outsidethe liquidor liquid temperaturehigherthana determinedvalue- a squarewave alarm output indicates an unsufficient liquid condition.Ifthe liquidlevelisrestoredbeforetheend of a delay time the alarm is not activated.

■ DRIVES DIRECTLY 300 mA ALARM LOAD

■ PROGRAMMABLE INPUT POLARITY TO ACTIVATE THE OUTPUT STAGE

■ PROGRAMMABLE DELAY TIME

■ PROGRAMMABLE OUTPUT DUTY CYCLE

■ OUTPUT SHORT CIRCUIT PROTECTION

■ OVERVOLTAGEAND THERMAL PROTECTION