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TL494CN Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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TL494CN Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 8 page TL494 3 Electrical Characteristics (VCC = 20V, f = 10KHz, TA = 0°C to + 70°C, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit REFERENCE SECTION Reference Output Voltage VREF IREF = 1mA 4.75 5.0 5.25 V Line Regulation ∆VREF VCC = 7V to 40V - 2.0 25 mV Temperature Coefficient of VREF ∆VREF/∆TTA = 0°C to 70°C - 0.01 0.03 %/ °C Load Regulation ∆VREF IREF = 1mA to 10mA - 1.0 15 mV Short-Circuit Output Currnet ISC VREF = 0V 10 35 50 mA OSCILLATOR SECTION Oscillation Frequency f CT = 0.01 µF, RT = 12KΩ -10 - KHz Frequency Change with Temperature ∆f/∆TCT = 0.01µF, RT = 12KΩ -- 2 % DEAD TIME CONTROL SECTION Input Bias Current IBIAS VCC = 15V, 0V ≤V4≤5.25V - -2.0 -10 µA Maximum Duty Cycle D(MAX) VCC = 15V, V4 = 0V O.C Pin = VREF 45 - - % Input Threshold Voltage VITH Zero Duty Cycle - 3.0 3.3 V Max. Duty Cycle 0 - - ERROR AMP SECTION Input Offset Voltage VIO V3 = 2.5V - 2.0 10 mV Input Offset Current IIO V3 = 2.5V - 25 250 mA Input Bias Current IBIAS V3 = 2.5V - 0.2 1.0 µA Common Mode Input Voltage VCM 7V ≤ VCC ≤ 40V -0.3 - VCC V Open-Loop Voltage Gain GVO 0.5V ≤ V3 ≤3 .5V 70 95 - dB Unit-Gain Bandwidth BW - - 650 - KHz PWM COMPARATOR SECTION Input Threshold Voltage VITH Zero Duty Cycle - 4 4.5 V Input Sink Currnet ISINK V3=0.7V -0.3 -0.7 - mV OUTPUT SECTION Output Saturation Voltage Common Emitter VCE(SAT) VE = 0, IC = 200mA - 1.1 1.3 V Common Collector VCC(SAT) VC = 15V, IE = -200mA - 1.5 2.5 Collector Off-State Currnet IC(OFF) VCC = 40V, VCE = 40V - 2 100 µA Emitter Off-State Current IE(OFF) VCC = VC = 40V, VE = 0 - - -100 TOTAL DEVICE Supply Current ICC Pin 6 = VREF, VCC = 15V - 6 10 mA OUTPUT SWITCHING CHARACTERISTIC Rise Time tR - -- -- Common Emitter - - - 100 200 ns Common Collector - - - 100 200 Fall Time tF - -- -- Common Emitter - - - 25 100 ns Common Collector - - - 40 100 |
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