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TL1451CDBR 데이터시트(PDF) 9 Page - Texas Instruments |
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TL1451CDBR 데이터시트(HTML) 9 Page - Texas Instruments |
9 / 37 page TL1451A DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 9 www.ti.com total device PARAMETER TEST CONDITIONS TL1451AQ, TL1451AM UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Standby supply current Off-state 1.3 1.8 mA Average supply current RT = 10 kΩ 1.7 2.4 mA † All typical values are at TA = 25°C unless otherwise indicated. PARAMETER MEASUREMENT INFORMATION 8 7 6 5 4 3 2 1 9 10 11 12 13 14 15 16 S1 CPE 0.47 µF Test Input VCC = 5 V RL 4.7 k Ω 4.7 k Ω RL OUT1 OUT2 CT 330 pF RT 10 k Ω Test Input TL1451A Figure 1. Test Circuit Dead Time 100% tpe† 2.0 V 1.6 V 1.4 V 1.25 V H L H L 0.6 V 0 V H L 3.6 V 0 V Oscillator Triangle Waveform Error Amplifier Output Dead-Time Input Voltage Short-Circuit Protection Comparator Input Voltage PWM Comparator Output Voltage Output Transistor Collector Waveform Protection Enable Terminal Waveform Short-Circuit Protection Comparator Output Power Supply Voltage † Protection Enable Time, tpe = (0.051 x 106 x Cpe) in seconds 2.8 V TYP Figure 2. TL1451A Timing Diagram |
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