PRECISE 12 V OUTPUTS LOW DROPOUT VOLTAGE (500 mV typ at 1.5A) VERY LOW QUIESCENT CURRENT THERMAL SHOUTDOWN SHORT CIRCUIT PROTECTION REVERSE POLARITY PROTECTION DESCRIPTION The L4940 series of three terminal positive regulators is available in TO-220 package and with several fixed output voltages, making it useful in a wide range of industrial and consumer applications. Thanks to its very low input/output voltage drop, these devices are particularly suitable for battery powered equipments, reducing consumption and prolonging battery life. Each type employs internal current limiting, antisaturation circuit, thermal shutdown and safe area protection.

Symbol VI VIR Forward Input Voltage Reverse Input Voltage V IO Ptot Tj, Tstg Output Current Power Dissipation Junction and Storage Temperature = 240 Internally Limited Internally Limited 150 °C Description Values 30 -15 Unit V

Symbol R th-j-case R th-j-amb Description Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Value 3 50 Unit °C/W