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LM5025SD Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM5025SD Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 16 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN to GND -0.3V to 100V V CC to GND -0.3V to 16V CS1, CS2 to GND -0.3 to 1.00V All other inputs to GND -0.3 to 7V ESD Rating (Note 2) Human Body Model 2kV Machine Model 200V Storage Temperature Range -55˚C to 150˚C Junction Temperature 150˚C Operating Ratings (Note 1) V IN Voltage 13 to 90V External Voltage Applied to V CC 8to15V Operating Junction Temperature -40˚C to +125˚C Electrical Characteristics Specifications with standard typeface are for T J = 25˚C, and those with boldface type apply over full Operating Junction Temperature range.V IN = 48V, VCC = 10V, RT = 31.3k Ω,R SET = 27.4k Ω) unless otherwise stated (Note 3) Symbol Parameter Conditions Min Typ Max Units Startup Regulator V CC Reg V CC Regulation No Load 7.3 7.6 7.9 V V CC Current Limit (Note 4) 20 25 mA I-V IN Startup Regulator Leakage (external Vcc Supply) V IN = 100V 165 500 µA Shutdown Current (Iin) UVLO = 0V 350 450 µA V CC Supply V CC Under-voltage Lockout Voltage (positive going V cc) V CC Reg - 220mV V CC Reg - 120mV V V CC Under-voltage Hysteresis 1.0 1.5 2.0 V V CC Supply Current (I CC) C gate =0 4.2 mA Reference Supply V REF Ref Voltage I REF =0mA 4.85 5 5.15 V Ref Voltage Regulation I REF = 0 to 10mA 25 50 mV Ref Current Limit 10 20 mA Current Limit CS1 Prop CS1 Delay to Output CS1 Step from 0 to 0.4V Time to onset of OUT Transition (90%) C gate =0 40 ns CS2 Prop CS2 Delay to Output CS2 Step from 0 to 0.4V Time to onset of OUT Transition (90%) C gate =0 50 ns Cycle by Cycle Threshold Voltage (CS1) 0.22 0.25 0.28 V Cycle Skip Threshold Voltage (CS2) Resets SS capacitor; auto restart 0.22 0.25 0.28 V Leading Edge Blanking Time 50 ns CS Sink Impedance (clocked) I CS = 10mA 30 50 Ω www.national.com 5 |
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