L4971D REGULATEUR AJUSTABLE 3.3V…50V / 1.5A

DESCRIPTION

The L4971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed. 

■ UP TO 1.5A STEP DOWN CONVERTER

■ OPERATING INPUT VOLTAGE FROM 8V TO 55V
■ PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
■ OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V
■ SWITCHING FREQUENCY ADJUSTABLE UP TO 500KHz
■ VOLTAGE FEEDFORWARD
■ ZERO LOAD CURRENT OPERATION
■ INTERNAL CURRENT LIMITING (PULSE-BY-PULSE AND HICCUP MODE)
■ INHIBIT FOR ZERO CURRENT CONSUMPTION
■ PROTECTION AGAINST FEEDBACK DISCONNECTION
■ THERMAL SHUTDOWN
■ SOFT START FUNCTION