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SC2604EVB Datasheet(PDF) 3 Page - Semtech Corporation |
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SC2604EVB Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 14 page SC2604 3 www.semtech.com © 2007 Semtech Corp. Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not recommended. NOTES- () Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards. (2) Tested according to JEDEC standard JESD22-A4-B. Electrical Characteristics Unless otherwise noted, V IN = 2V, VO = 25V, -40°C < TA = TJ < 25°C. Absolute Maximum Ratings V IN Supply Voltage ……………………………… -0.3 to 20V CS Pin Voltage………………………………………-0.3 to 20V GATE Pin Voltage……………………………………-0.3 to 20V DRV Pin Voltage ……………………………………-0.3 to 25V OCP/EN Pin Voltage …………………………………-0.3 to 7V SS/VREF Pin Voltage …………………………………-0.3 to 7V FB Pin Voltage ………………………………………-0.3 to 7V Peak IR Reflow Temperature …………………………. 260°C ESD Protection Level(2) ………………………………… 2000V Thermal Information Junction to Ambient () ……………………………… 60°C/W Junction to Case () ………………………………… 45°C/W Maximum Junction Temperature……………………… 50°C Storage Temperature ………………………… -45 to +50°C Lead Temperature (Soldering) 0 sec ………………… 300°C Parameter Conditions Min Typ Max Units Input Supply V IN Supply Voltage 4.5 3.5 V V IN Start Voltage V IN Rising 4.2 4.5 V V IN Start Hysteresis 400 mV V IN Supply Current Switching, GATE pin floating 6.0 9.0 mA V IN Shutdown Current OCP/EN = Low 200 µA Error Amplifier Feedback Voltage I O = 00mA .225 .250 .275 V Feedback Bias Current V IN = 2V, VFB = VSS/VREF 0.5 .0 µA Error Amplifier Gain () 90 V/V Oscillator Oscillator Frequency 320 400 480 kHz Maximum Duty Cycle 86 90 % Internal Ramp Peak (2) .4 V Internal Ramp Valley (2) 0.4 V Regulation Load Regulation I O = 0.A to A 0.5 % Line Regulation V IN = 5V to 3.5V, IO = 0.A .0 % Recommended Operating Conditions Input Voltage Range …………………………… 4.5V to 3.5V |
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