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LM3501TLX-21 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM3501TLX-21 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 18 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 −0.3V to 7.5V V OUT (LM3501-16)(Note 2) −0.3V to 16V V OUT (LM3501-21)(Note 2) −0.3V to 21V V SW (Note 2) −0.3V to V OUT+0.3V FB Voltage −0.3V to 7.5V SHDN Voltage −0.3V to V IN+0.3V CNTRL −0.3V to 7.5V Maximum Junction Temperature 150˚C Lead Temperature (Soldering 10 sec.) 300˚C Vapor Phase (60 sec.) 215˚C Infrared (15 sec.) 220˚C ESD Ratings (Note 3) Human Body Model 2kV Machine Model 200V Operating Conditions Junction Temperature (Note 4) −40˚C to +125˚C Supply Voltage 2.7V to 7V CNTRL Max. 2.7V Thermal Properties Junction to Ambient Thermal Resistance ( θ JA) (Note 5) 75˚C/W Electrical Characteristics Specifications in standard type face are for T A = 25˚C and those in boldface type apply over the Operating Temperature Range of T A = −10˚C to +85˚C. Unless otherwise specified VIN = 2.7V and specifications apply to both LM3501-16 and LM3501-21. Symbol Parameter Conditions Min (Note 6) Typ (Note 7) Max (Note 6) Units I Q Quiescent Current, Device Not Switching FB > 0.54V 0.95 1.2 mA Quiescent Current, Device Switching FB=0V 2 2.5 Shutdown SHDN = 0V 0.1 2 µA V FB Feedback Voltage CNTRL = 2.7V, V IN = 2.7V to 7V 0.485 0.515 0.545 V CNTRL = 1V, V IN = 2.7V to 7V 0.14 0.19 0.24 ∆V FB Feedback Voltage Line Regulation V IN = 2.7V to 7V 0.1 0.5 %/V I CL Switch Current Limit (LM3501-16) V IN = 2.7V, Duty Cycle = 80% 275 400 480 mA V IN = 3.0V, Duty Cycle = 70% 255 400 530 Switch Current Limit (LM3501-21) V IN = 2.7V, Duty Cycle = 70% 420 640 770 V IN = 3.0V, Duty Cycle = 63% 450 670 800 I B FB Pin Bias Current FB = 0.5V (Note 8) 45 200 nA V IN Input Voltage Range 2.7 7.0 V R DSON NMOS Switch R DSON V IN = 2.7V, ISW = 300 mA 0.43 Ω PMOS Switch R DSON V OUT = 6V, ISW = 300 mA 1.3 2.3 D Limit Duty Cycle Limit (LM3501-16) FB=0V 80 87 % Duty Cycle Limit (LM3501-21) FB=0V 85 94 F SW Switching Frequency 0.85 1.0 1.15 MHz www.national.com 3 |
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