L5971 Datasheet PDF - STMicroelectronics

DESCRIPTION
The L5971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 1.26V and 20V (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 6.5V TO 28V
■ PRECISE 1.26V (±1%) INTERNAL REFERENCE VOLTAGE
■ OUTPUT VOLTAGE ADJUSTABLE FROM 1.26V TO 20V
■ 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