LA5757TP

Ordering number : ENA1439 LA5757TP Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type) http://onsemi.com Overview The LA5757TP is a separately-excited step-down switching regulator (variable type). Features Output smoothing condenser can use a Low ESR condenser for the reliability improvement High efficiency Four external parts Time-base generator (300kHz) incorporated Current limiter incorporated Thermal shutdown circuit incorporated Soft start circuit incorporated Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Input voltage Output current SW pin application reverse Allowable power dissipation VIN max IO max VSW Pd max Mounted on a specified board* Operating temperature Topr Storage temperature Tstg * Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board. Ratings 34 1.5 -1 1.1 -30 to +125 -40 to +150 Unit V A V W °C °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Recommended Operating Conditions at Ta = 25°C Parameter Input voltage range Symbol VIN Conditions Ratings 4.5 to 32 Unit V Semiconductor Components Industries, LLC, 2013 August, 2013 40809 MS 20090326-S00004 No.A1439-1/6 LA5757TP Electrical Characteristics at Ta = 25°C, VO = ...