LA5779MP

Ordering number : ENA0498 LA5779MP Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type) http://onsemi.com Overview The LA5779MP is a Separately-excited step-down switching regulator (variable type). Functions High efficiency. Six external parts. Time-base generator (160kHz) incorporated. Current limiter incorporated. Thermal shutdown circuit incorporated. ON/OFF function. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Maximum Input voltage Maximum Output current SW pin application reverse voltage Allowable power dissipation VIN max IO max VSW Pd max Mounted on a substrate.* Operating temperature Topr Storage temperature Tstg * Specified substrate : 76.1×114.3×1.6mm3 : Copper foil ratio 60％ FR4 Ratings 30 3 -1 3.9 -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 28 Unit V Semiconductor Components Industries, LLC, 2013 August, 2013 N1306 MS PC 20060411-S00008 No.A0498-1/4 LA5779MP Electrical Characteristics at Ta = 25°C, VO = 3.3V Parameter Symbol Conditions Reference voltage Efficien...