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UC1845W883B 데이터시트(PDF) 3 Page - Texas Instruments |
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UC1845W883B 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 28 page www.ti.com Temp Stability + V REF (max) * VREF (min) TJ(max) * TJ (min) VREF(max) and VREF(min) are the maximum and minimum reference voltages measured over THERMAL CHARACTERISTICS DISSIPATION RATINGS ELECTRICAL CHARACTERISTICS UC1842/3/4/5 UC2842/3/4/5 UC3842/3/4/5 SLUS223C – APRIL 1997 – REVISED JUNE 2007 over operating free-air temperature range (unless otherwise noted) PACKAGE θ JC θ JA DIL-8 J 28(1) 125-160 N 25 110(2) SOIC-8 D8 42 84-160(2) SOIC-14 D14 35 50-120(2) CFP-14 W 5.49 °C/W 175.4C/W PLCC-20 Q 34 43-75(2) (1) θ JC data values stated were derived from MIL-STD-1835B. (2) Specified θ JA (junction to ambient) is for devices mounted to 5 in 2 FR4 PC board with one ounce copper where noted. When resistance range is given, lower values are for 5 in2. Test PWB was 0.062 in thick and typically used 0.635-mm trace widths for power packages and 1.3-mm trace widths for non-power packages with 100 x 100-mil probe land area at the end of each trace. TA≤ 25°C DERATING FACTOR TA≤ 70°C TA≤ 85°CPO TA≤ 125°C PACKAGE POWER RATING ABOVE TA≤ 25°C POWER RATING WER RATING POWER RATING W 700 mW 5.5 mW/ °C 452 mW 370 mW 150 mW Unless otherwise stated, these specifications apply for –55 °C ≤ T A≤ 125°C for the UC184X; –40°C ≤ TA≤ 85°C for the UC284X; 0 °C ≤ T A≤ 70°C for the 384X; VCC = 15 V (1); R T = 10 kΩ; CT = 3.3 nF, TA = TJ. UC1842/3/4/5 UC3842/3/4/5 UC2842/3/4/5 PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX REFERENCE SECTION Output Voltage TJ = 25°C, IO = 1 mA 4.95 5.00 5.05 4.90 5.00 5.10 V Line Regulation 12 ≤ V IN≤ 25 V 6 20 6 20 mV Load Regulation 1 ≤ I 0≤ 20 mA 6 25 6 25 Temp. Stability See (2)(3) 0.2 0.4 0.2 0.4 mV/ °C Total Output Variation Line, load, tempature (2) 4.9 5.1 4.82 5.18 V Output Noise Voltage 10 Hz ≤ f ≤ 10 kHz, T J = 25°C (2) 50 50 µV Long Term Stability TA = 125°C, 1000 Hrs(2) 5 25 5 25 mV Output Short Circuit –30 –100 –180 –30 –100 –180 mA OSCILLATOR SECTION Initial Accuracy TJ = 25°C(4) 47 52 57 47 52 57 kHz Voltage Stability 12 ≤ V CC≤ 25 V 0.2% 1% 0.2% 1% Temp. Stability TMIN≤ TA≤ TMAX(2) 5% 5% Amplitude VPIN 4 peak-to-peak (2) 1.7 1.7 V (1) Adjust VCC above the start threshold before setting at 15 V. (2) These parameters, although specified, are not 100% tested in production. (3) Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation: the appropriate temperature range. Note that the extremes in voltage do not necessarily occur at the extremes in temperature. (4) Output frequency equals oscillator frequency for the UC1842 and UC1843. Output frequency is one half oscillator frequency for the UC1844 and UC1845. 3 Submit Documentation Feedback |
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