3-V TO 6-V INPUT, 6-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs(SWIFTâ¢)FOR SEQUENCING3 V至6 V的输入,具有集成FET 6 -A输出跟踪同步降压PWM切换器( SWIFTâ ?? ¢ )进行测序