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LM2698MMX-ADJ Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM2698MMX-ADJ Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 17 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 ≤ V IN ≤ 12V SW Voltage −0.3V ≤ V SW ≤ 18V FB Voltage −0.3V ≤ V FB ≤ 7V V C Voltage 0.965 < V C < 1.565 SHDN Voltage (Note 2) −0.3V ≤ V SHDN ≤ 7V FSLCT (Note 2) −0.3V ≤ V FSLCT ≤ 12V Maximum Junction Temperature 150˚C Power Dissipation (Note 3) Internally Limited Lead Temperature 300˚C Vapor Phase (60 sec.) 215˚C Infrared (15 sec.) 220˚C ESD Susceptibility (Note 4) Human Body Model (Note 5) 2kV Machine Model 200V Operating Conditions Operating Junction Temperature Range (Note 6) −40˚C to +125˚C Storage Temperature −65˚C to +150˚C Supply Voltage 2.2V to 12V SW Voltage 0 ≤ V SW ≤ 17.5V Electrical Characteristics Specifications in standard type face are for T J = 25˚C and those with boldface type apply over the full Operating Tempera- ture Range (T J = −40˚C to +125˚C)Unless otherwise specified. VIN =2.2V and IL = 0A, unless otherwise specified. Symbol Parameter Conditions Min (Note 6) Typ (Note 7) Max (Note 6) Units I Q Quiescent Current FB = 0V (Not Switching) 1.3 2.0 mA V SHDN =0V 5 10 µA V FB Feedback Voltage 1.2285 1.26 1.2915 V I CL Switch Current Limit V IN = 2.7V (Note 8) 1.35 1.9 2.4 A %V FB/∆VIN Feedback Voltage Line Regulation 2.2V ≤ V IN ≤ 12.0V 0.013 0.1 %/V I B FB Pin Bias Current (Note 9) 0.5 20 nA V IN Input Voltage Range 2.2 12 V g m Error Amp Transconductance ∆I = 5µA 40 135 290 µmho A V Error Amp Voltage Gain 120 V/V D MAX Maximum Duty Cycle FSLCT = Ground 78 85 % D MIN Minimum Duty Cycle FSLCT = Ground 15 % FSLCT = V IN 30 f S Switching Frequency FSLCT = Ground 480 600 720 kHz FSLCT = V IN 1 1.25 1.5 MHz I SHDN Shutdown Pin Current V SHDN =VIN 0.01 0.1 µA V SHDN =0V −0.5 -1 I L Switch Leakage Current V SW = 18V 0.01 3 µA R DS(ON) Switch R DS(ON) V IN = 2.7V, ISW = 1A 0.2 0.4 Ω TH SHDN SHDN Threshold Voltage Output High 0.6 0.9 V Output Low 0.3 0.6 V UVP On Threshold 1.95 2.05 2.2 V Off Threshold 1.85 1.95 2.1 V www.national.com 4 |
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