STMicroelectronics L4973V5.1

L4973 Series 55 V 3.5 A Adjustable/Fixed Step Down Switching Regulator - DIP-18
L4973 Tube Matte Tin (Sn) Active DC to DC switching regulator 24V 7.1mm 3.5A 100kHz~300kHz
Dc/Dc Conv, Buck, 100Khz, 150Deg C; Topology:Buck (Step Down); Input Voltage Min:8V; Input Voltage Max:55V; No. Of Outputs:1Outputs; Dc/Dc Converter Ic Case:Dip; No. Of Pins:18Pins; Output Current:3.5A; Output Voltage Min:5.1V Rohs Compliant: Yes |Stmicroelectronics L4973V5.1
The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V and using a simple external divider output adjustable voltage up to 50V. Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical RDS(on) of 0.15Omega ) to obtain very high efficiency and very fast switching times. Switching frequency up to 300KHz are achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of the today applications. Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown. Packages available are in plastic dual in line, DIP- 18 (12 3 3) for standard assembly, and SO20 (12 4 4) for SMD assembly.