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LA5779 Scheda tecnica(PDF) 1 Page - ON Semiconductor |
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LA5779 Scheda tecnica(HTML) 1 Page - ON Semiconductor |
1 / 4 page 62707 MS PC 20070619-S00001 / N1306 MS PC 20060606-S00001 No.A0476-1/4 http://onsemi.com Semiconductor Components Industries, LLC, 2013 August, 2013 LA5779 Overview The LA5779 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 Ratings Unit Maximum Input voltage VIN max 30 V Maximum Output current IO max 3 A SW pin application reverse voltage VSW -1 V Pd max1 Infinitely large heat sink. 7.5 W Allowable power dissipation Pd max2 Independent IC. 1.75 W Operating temperature Topr -30 to +125 °C Storage temperature Tstg -40 to +150 °C Junction temperature Tj max 150 °C Recommended Operating Conditions at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Input voltage range VIN 4.5 to 28 V Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type) Ordering number : ENA0476A 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. |
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