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UC494AJ883B Fiches technique(PDF) 2 Page - Texas Instruments |
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UC494AJ883B Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 5 page CONNECTION DIAGRAMS DIL-18 (TOP VIEW) J or N Package DIL-18 (TOP VIEW) J or N Package UC494A/AC UC495A/AC ABSOLUTE MAXIMUM RATINGS (Note 1, 2, 3) Supply Voltage, VCC (Note 2). . . . . . . . . . . . . . . . . . . . . . . . 45V Amplifier Input Voltages . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3V Collector Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 41V Collector Output Current. . . . . . . . . . . . . . . . . . . . . . . . . 250mA Continuous Total Dissipation . . . . . . . . . . . . . . . . . . . . 1000mW @ (or below) 25 °C free air temperature range (Note 3) Storage Temperature Range . . . . . . . . . . . . . . . -65° to +150°C Lead Temperature 1/16" (1.6mm) from case for 60 seconds, J Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C Lead Temperature 1/16" (1.6mm) from case for 10 seconds, N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Note 1: Over operating free air temperature range unless otherwise noted. Note 2: All voltage values are with respect to network ground terminal 3. Note 3: Consult Packaging Section of Databook regarding thermal specifications and limitations of packages. RECOMMENDED OPERATING CONDITIONS Supply Voltage VCC . . . . . . . . . . . . . . . . . . . . . . . . . . 7V to 40V Error Amplifier Input Voltages . . . . . . . . . . . . . -0.3V to VCC-2V Collector Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Collector Output Current (each transistor) . . . . . . . . . . . 200mA Current into Feedback Terminal. . . . . . . . . . . . . . . . . . . . 0.3mA Timing Capacitor, CT . . . . . . . . . . . . . . . . . 0.47nF to 10,000nF Timing Resistor, RT . . . . . . . . . . . . . . . . . . . . . 1.8k Ω to 500kΩ Oscillator Frequency . . . . . . . . . . . . . . . . . . . . 1kHz to 300kHz Operating Free Air Temperature UC494A, UC495A . . . . . . . . . . . . . . . . . . . . -55°C to +125°C UC494AC, UC495AC . . . . . . . . . . . . . . . . . . . . 0°C to +70°C ELECTRICAL CHARACTERISTICS: PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Reference Section Output Voltage VREF IO = 1mA, TA = 25 °C4.95 5 5.05 V Input Regulation VCC = 7V to 40V 2 25 mV Output Regulation IO = 1mA to 10mA 1 15 mV Output Voltage Over Temperature ∆TA = Min. to Max. 4.90 5.10 V Short Circuit Output Current VREF = 0, TA = 25 °C (Note 1) 10 35 50 mA Oscillator Section Frequency (Note 2) CT = 0.01 µF, RT = 12kΩ 10 kHz Standard Deviation Of Frequency (Note 3) All Values of VCC, CT, RT, TA Constant 10 % Frequency Change With Voltage VCC = 7V to 40V, TA = 25 °C0.1 % Frequency Change With Temperature CT = 0.01 µF, RT = 12kΩ, ∆TA = Min. to Max. 2 % Deadtime Control Section (Output Control Connected to VREF) Input Bias Current (Pin 4) V(PIN 4) = 0V to 5.25V -2 -10 µA Maximum Duty-Cycle (Each Output) V(PIN 4) = 0V 45 % Unless otherwise stated, over recommended operating free-air temperature range, VCC = 15V, f = 10kHz, TA = TJ. UC494A/AC UC495A/AC 2 |
Numéro de pièce similaire - UC494AJ883B |
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Description similaire - UC494AJ883B |
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