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UC1854B датащи(PDF) 3 Page - Texas Instruments |
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UC1854B датащи(HTML) 3 Page - Texas Instruments |
3 / 7 page ELECTRICAL CHARACTERISTICS (cont.) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS CURRENT AMPLIFIER Input Offset Voltage VCM = 0V TA = +25 °C −40 mV OverTemp –5.5 0 mV Input Bias Current(sense) VCM = 0V –500 500 nA Open Loop Gain VCM = 0V, VOUT = 2 to 6V 80 110 dB VOUT High ILOAD = –500 µA8 V VOUT Low ILOAD = 500 µA 0.3 0.5 V Output Short Circuit Current VOUT = 0V 1.5 3.5 mA Common Mode Range –0.3 5 V Gain Bandwidth Product Fin = 100kHz, 10mV p-p, (Note 1) 3 5 mHz REFERENCE Output Voltage IREF = 0mA, TA = 25 oC 7.4 7.5 7.6 V IREF = 0mA 7.35 7.5 7.65 V Load Regulation IREF = 1 to 10mA 0 8 20 mV Line Regulation VCC = 12 to 18V 0 14 25 mV Short Circuit Current VREF = 0V 25 35 60 mA OSCILLATOR Initial Accuracy TA = 25 oC 85 100 115 kHz Voltage Stability VCC = 12 to 18V 1 % Total Variation Line, Temp 80 120 kHz Ramp Amplitude (p-p) 4.9 5.9 V Ramp Valley Voltage 0.8 1.3 V ENABLE / SOFTSTART / CURRENT LIMIT Enable Threshold 2.35 2.55 2.8 V Enable Hysteresis VFAULT = 2.5V 500 600 mV Enable Input Bias Current VENABLE = 0V –2 –5 µA Propagation Delay to Disable Enable Overdrive = –100mV,(Note 1) 300 ns SS Charge Current VSOFTSTART = 2.5V 10 14 24 PKLMT Offset Voltage –15 15 mV PKLMT Input Current VPKLMT = –0.1V –200 –100 µA PKLMT Propagation Delay (Note 1) 150 ns MULTIPLIER Output Current - IAC Limited IAC=100 µA, VRMS = 1V, RSET = 10k –220 –200 –170 µA Output Current - Zero IAC=0 µA, RSET = 10k –2.0 –0.2 2.0 µA Output Current - Power Limited VRMS = 1.5V, Va = 6V –230 –200 –170 µA Output Current VRMS = 1.5V, Va = 2V –22 µA VRMS = 1.5V, Va = 5V –156 µA VRMS = 5V, Va = 2V –2 µA VRMS = 5V, Va = 5V –14 µA Gain Constant (Note 2) VRMS = 1.5V, TJ = 25°C, Va = 6V –1.1 –1.0 –0.9 A/A UC1854A/B UC2854A/B UC3854A/B Unless otherwise stated, VCC=18V, RT=8.2k, CT=1.5nF, PKLMT=1V, VRMS=1.5V, IAC=100 µA, ISENSE=0V, CA Out=3.5V, VA Out=5V, VSENSE=3V, –55oC<TA<125oC for the UC1854A/B, –40 oC<TA<85oC for the UC2854A/B, and 0oC<TA<70oC for the UC3854A/B, and TA=TJ. Note 1: Guaranteed by design, not 100% tested in production. Note 2: Gain constant (K) = IAC × (Va − 1.5V) VRMS 2 × IMO 3 |
Аналогичный номер детали - UC1854B |
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Аналогичное описание - UC1854B |
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