L7981 PDF 데이터시트 검색

L7981 3 A step-down switching regulator Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 3 A DC output current 4.5 V to 28 V input voltage Output voltage adjustable from 0.6 V 250 kH- switching frequency, programmable up to 1 MH- Internal soft-start and enable Low dropout operation: 100% duty cycle Voltage feed-forward Zero load current operation Overcurrent and thermal protection VFQFPN3x3-8L and HSOP8 package VFQFPN8 3x3 HSOP8 exposed pad Description The L7981 is a step down switching regula