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UC3842A Datasheet(PDF) 2 Page - Texas Instruments |
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UC3842A Datasheet(HTML) 2 Page - Texas Instruments |
2 / 7 page PACKAGE PIN FUNCTION FUNCTION PIN N/C 1 Comp 2 N/C 3-4 VFB 5 N/C 6 ISENSE 7 N/C 8-9 RT/CT 10 N/C 11 Pwr Gnd 12 Gnd 13 N/C 14 Output 15 N/C 16 VC 17 VCC 18 N/C 19 VREF 20 DIL-8, SOIC-8 (TOP VIEW) J or N, D8 Package CONNECTION DIAGRAMS ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for -55 °C ≤ TA ≤ 125°C for the UC184xA; -40 °C ≤ TA ≤ 85°C for the UC284xA; 0 ≤ TA ≤ 70°C for the UC384xA; VCC = 15V (Note 5); RT = 10k; CT = 3.3nF; TA = TJ; Pin numbers refer to DIL-8. PARAMETER TEST CONDITIONS UC184xA\UC284xA UC384xA UNITS MIN. TYP. MAX. MIN. TYP. MAX. Reference Section Output Voltage TJ = 25°C, IO = 1mA 4.95 5.00 5.05 4.90 5.00 5.10 V Line Regulation 12 ≤≤ VIN ≤≤ 25V 6 20 6 20 mV Load Regulation 1 ≤≤ IO ≤≤ 20mA 6 25 6 25 mV Temp. Stability (Note 2, Note 7) 0.2 0.4 0.2 0.4 mV/°C Total Output Variation Line, Load, Temp. 4.9 5.1 4.82 5.18 V Output Noise Voltage 10Hz ≤≤ f ≤≤ 10kHz TJ = 25°C (Note 2) 50 50 µV Long Term Stability TA = 125°C, 1000Hrs. (Note 2) 525 5 25 mV Output Short Circuit -30 -100 -180 -30 -100 -180 mA Oscillator Section Initial Accuracy TJ = 25°C (Note 6) 47 52 57 47 52 57 kHz Voltage Stability 12 ≤≤ VCC ≤≤ 25V 0.2 1 0.2 1 % Temp. Stability TMIN ≤≤ TA ≤≤ TMAX (Note 2) 5 5 % Amplitude VPIN 4 peak to peak (Note 2) 1.7 1.7 V Discharge Current TJ = 25°C, VPIN 4 = 2V (Note 8) 7.8 8.3 8.8 7.8 8.3 8.8 mA VPIN 4 = 2V (Note 8) 7.5 8.8 7.6 8.8 mA ABSOLUTE MAXIMUM RATINGS (Note 1) Note 1. All voltages are with respect to Ground, Pin 5. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and con- siderations of packages. Pin numbers refer to DIL package only. PLCC-20, LCC-20 (TOP VIEW) Q, L Packages UC1842A/3A/4A/5A UC2842A/3A/4A/5A UC3842A/3A/4A/5A Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V Supply Voltage (ICC mA). . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . 10mA Power Dissipation at TA ≤ 25°C (DIL-8) . . . . . . . . . . . . . . . . 1W Storage Temperature Range . . . . . . . . . . . . . -65°C to +150°C Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . 300°C SOIC-14 (TOP VIEW) D Package 2 |
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