AN938设计与L4973，3.5一个催效率的DC-DC转换器 AN938 Application note Designing with L4973, 3.5 A high efficiency DC-DC converter Introduction The L4973 family is a 3.5 A monolithic DC-DC converter in step-down topology operating in continuous mode. It uses BCD60 II technology and is available in two plastic packages, power DIP18 (12+3+3) and SO20 (12+4+4). Two versions of the device are available. The L4973V3.3 sets the output voltage without any voltage divider at 3.3 V and the L4973V5.1 at 5.1 V. ……