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UCC2895DW Datasheet(PDF) 4 Page - Texas Instruments |
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UCC2895DW Datasheet(HTML) 4 Page - Texas Instruments |
4 / 25 page UCC1895 UCC2895 UCC3895 SLUS157L − DECEMBER 1999 − REVISED APRIL 2008 4 www.ti.com ELECTRICAL CHARACTERISTICS VDD = 12 V, RT = 82 kΩ, CT = 220 pF, RDELAB = 10 kΩ, RDELCD = 10 kΩ, CREF = 0.1 µF, CVDD = 0.1 µF and no load on the outputs, TA = TJ. TA = 0°C to 70°C for UCC3895x, TA = −40°C to 85°C for UCC2895x and TA = −55°C to 125°C for the UCC1895x. (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS UVLO (UNDERVOLTAGE LOCKOUT) UVLO(on) Start-up voltage threshold 10.2 11 11.8 UVLO(off) Minimum operating voltage after start-up 8.2 9 9.8 V UVLO(hys) Hysteresis 1.0 2.0 3.0 SUPPLY ISTART Start-up current VDD = 8 V 150 250 µA IDD Operating current 5 6 mA VDD_CLAMP VDD clamp voltage IDD = 10 mA 16.5 17.5 18.5 V VOLTAGE REFERENCE TJ = 25°C 4.94 5.00 5.06 VREF Output voltage 10 V < VDD < VDD_CLAMP, 0 mA < IREF < 5 mA, temperature 4.85 5 5.15 V ISC Short circuit current REF = 0 V, TJ = 25°C 10 20 mA ERROR AMPLIFIER Common-mode input voltage range −0.1 3.6 V VIO Offset voltage −7 7 mV IBIAS Input bias current (EAP, EAN) −1 1 µA EAOUT_VOH High-level output voltage EAP−EAN = 500 mV, IEAOUT = −0.5 mA 4.0 4.5 5.0 V EAOUT_VOL Low-level output voltage EAP−EAN = −500 mV, IEAOUT = 0.5 mA 0 0.2 0.4 V ISOURCE Error amplifier output source current EAP−EAN = 500 mV, EAOUT = 2.5 V 1.0 1.5 mA ISINK Error amplifier output sink current EAP−EAN = −500 mV, EAOUT = 2.5 V 2.5 4.5 mA AVOL Open-loop dc gain 75 85 dB GBW Unity gain bandwidth(1) 5.0 7.0 MHz Slew rate(1) 1 V < EAN < 0 V, EAP = 500 mV 0.5 V < EAOUT < 3.0 V 1.5 2.2 V/ µs No-load comparator turn-off threshold 0.45 0.50 0.55 No-load comparator turn-on threshold 0.55 0.60 0.69 V No-load comparator hysteresis 0.035 0.10 0.165 OSCILLATOR fOSC Frequency TJ = 25°C 473 500 527 kHz Frequency total variation(1) Over line, temperature 2.5% 5% VIH_SYNC SYNC input threshold, SYNC 2.05 2.10 2.40 VOH_SYNC High-level output voltage, SYNC ISYNC = −400 µA, VCT = 2.6 V 4.1 4.5 5.0 V VOL_SYNC Low-level output voltage, SYNC ISYNC = 100 µA, VCT = 0.0 V 0.0 0.5 1.0 V Sync output pulse width LOADSYNC = 3.9 kΩ and 30 pF in parallel 85 135 ns VRT Timing resistor voltage 2.9 3 3.1 VCT(peak) Timing capacitor peak voltage 2.25 2.35 2.55 V VCT(valley) Timing capacitor valley voltage 0.0 0.2 0.4 V (1) Ensured by design. Not production tested. |
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