전자부품 데이터시트 검색엔진 |
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UC2826 데이터시트(PDF) 3 Page - Texas Instruments |
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UC2826 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 12 page 3 UC1826 UC2826 UC3826 ELECTRICAL CHARACTERISTICS: Unless otherwise stated these specifications apply for TA = –55°C to +125°C for UC1826; –40°C to +85°C for UC2826; and 0°C to +70°C for UC3826; VCC = 12V, VEE = GND, Output no load, CT = 345pF, RT = 4k , RDEAD = 1000 , CRAMP = 345pF, RRAMP = 35.2k ,RCLKSYN = 1k, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Voltage Error Amplifier (cont.) GBW (Note 2) f = 200kHz 7 MHz Vol IO = 175mA, Volts above VEE 0.6 V Voh ILIM = 3V 2.85 3 3.15 V Voh-ILIM Tested ILIM = 0.5V, 1.0V, 2.0V –100 100 mV 2X Amplifier and Share Amplifier V offset (b; y = mx + b) 20 mV GAIN (m; y = mx + b) Slope with AVOUT = 1V and 2V 1.98 2.02 V GBW (Note 2) 100 kHZ RSHARE VCC = 0, VSHARE/ISHARE 200 k Total Offset Negative supply is VEE, GND Open,VAO = GND –75 0 75 mV Vol VAO = Voltage Amp Vol, Volts above VEE 0.2 0.45 0.6 V Voh IO = 0mA, ILIM = 3V, VAO = Voltage Amp Voh 5.7 6 6.3 V IO = –1mA, ILIM = 3V, VAO = Voltage Amp Voh 5.7 6 6.3 V Adjust Amplifier Vio 40 60 80 mV gm IO = –2 A to 2 A, CADJ = 0.1 F –0.1 –0.3 mS Vol IOUT = 0 0.9 1 1.1 v IOUT = 2 A 0.85 1 1.15 V Voh IOUT = 0, VSHARE = 6.5V 5.7 6 6.3 V IOUT = –2 A, VSHARE = 6.5V 5.7 6 6.3 V Oscillator Frequency 450 500 550 kHz Max Duty Cycle 72 76 80 % OSC Ramp Amplitude 2 2.2 2.4 V Ramp Saturation IO = 10mA, OSC = 0V 0.44 0.8 V Clock Driver/SYNC (CLKSYN) Vol 0.02 0.2 V Voh 3.6 V RCLKSYN = 200 3.5 V ISOURCE 25 mA RCLKSYN VCC = 0, VCLKSYN/ICLKSYN 10 k VTH 1.5 V VREF Comparator Turn-on Threshold 4.65 V Hysteresis 0.4 V VCC Comparator Turn-on Threshold 7.9 8.4 8.9 V Hysteresis 0.4 V PWR Sense Comparator Voltage Threshold 1.25 V Vol IO = 1mA 0.3 0.4 V Voh IO = –100 A4 V KILL Comparator Voltage Threshold 3V |
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