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UC3843N Datasheet(PDF) 2 Page - Texas Instruments |
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UC3843N Datasheet(HTML) 2 Page - Texas Instruments |
2 / 3 page 2 UC1842/3/4/5 UC2842/3/4/5 UC3842/3/4/5 ABSOLUTE MAXIMUM RATINGS(Note 1) Supply Voltage (Low Impedance Source) ..............30V Supply Voltage (ICC < 30mA) ................. Self Limiting Output Current................................... ±1A Output Energy (Capacitive Load) ....................5 µJ Analog Inputs (Pins 2, 3)................... -0.3V to +6.3V Error Amp Output Sink Current ....................10 mA Power Dissipation at TA ≤ 25°C (DIL−8) ................. 1W Power Dissipation at TA ≤ 25°C (SOIC-14) .........725 mW Storage Temperature Range .............. -65°C to +150°C Junction Temperature Range ............. -55°C to +150°C Lead Temperature (soldering, 10 seconds) ........... 300°C Note 1: All voltages are with respect to Pin 5. All currents are positive into the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. CONNECTION DIAGRAMS DIL-8, SOIC-8 (TOP VIEW) N or J Package, D8 Package PLCC-20 (TOP VIEW) Q Package SOIC-14, CFP-14. (TOP VIEW) D or W Package PACKAGE PIN FUNCTION FUNCTION PIN N/C 1 COMP 2 N/C 3 N/C 4 VFB 5 N/C 6 ISENSE 7 N/C 8 N/C 9 RT/CT 10 N/C 11 PWR GND 12 GROUND 13 N/C 14 OUTPUT 15 N/C 16 VC 17 VCC 18 N/C 19 VREF 20 Package TA ≤ 25°C Power Rating Derating Factor Above TA ≤ 25°C TA ≤ 70°C Power Rating TA ≤ 85°C Power Rating TA ≤ 125°C Power Rating W 700 mW 5.5 mW/°C 452 mW 370 mW 150 mW DISSIPATION RATING TABLE |
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