SC1537CMTR PDF 데이터시트 검색

700mA SmartLDO TM SC1537 PRELIMINARY - July 25, 2000 TEL:805-498-2111 FAX:805-498-3804 WEB:http:, , www.semtech.com DESCRIPTION The SC1537 is designed to maintain a glitch-free 3.3V output when at least one of two inputs, 5V (VIN) and 3.3V (VAUX), is present. Whenever VIN exceeds a predetermined threshold value, the internal 3.3V linear regulator is enabled, and DR is pulled high. When VIN falls below a lower threshold value, DR is pulled low and the internal linear regulator is turned off.