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UC28023N Fiches technique(PDF) 4 Page - Texas Instruments |
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UC28023N Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 18 page UC28023 UC28025 SLUS557B − MARCH 2003 − REVISED APRIL 2004 4 www.ti.com ELECTRICAL CHARACTERISTICS TA = −40°C to 105°C , TJ = TA, RT = 3.65 kΩ, CT = 1 nF, VCC = 15 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SOFT-START ICHG Charge current VSS = 0.5 V 3 9 20 µA IDISCHG Discharge current VSS = 1.0 V 1.0 7.5 mA CURRENT LIMIT/SHUTDOWN ILIMIT Current limit bias current 0 V < V(ILIM/SD) < 4 V ±10 µA ILIMIT Offset voltage UC28023 15 mV ILIMREF Common mode range(1) UC28023 1.00 1.25 Current limit threshold voltage UC28025 0.9 1.0 1.1 V Shutdown threshold voltage 1.25 1.40 1.55 V tDELAY Delay to output time(1) 50 80 ns OUTPUT VOL Low-level output voltage IOUT = 20 mA 0.25 0.40 VOL Low-level output voltage IOUT = 200 mA 1.2 2.2 V VOH High-level output voltage IOUT = −20 mA 13.0 13.5 V VOH High-level output voltage IOUT = −200 mA 12 13 Collector leakage VC = 30 V 100 500 µA Rise time / Fall time(1) CLOAD = 1 nF 30 60 ns UNDERVOLTAGE LOCKOUT (UVLO) Start threshold voltage 8.8 9.2 9.6 V Hysteresis 0.4 0.8 1.2 V SUPPLY CURRENT Start-up current VCC = 8 V 1.1 2.0 mA ICC Operating current VINV = VRAMP = VILIM = 0 V VINV = 1 V 25 35 mA (1) Ensured by design. Not production tested. THERMAL RESISTANCE PACKAGE θJA (°C/W) θJC (°C/W) N(2) 90(2) 45 DW(2) 50−100(2) 27 (2) Specified θJA (junction-to-ambient) is for devices mountied to 5-square-inch FR4 PC board with one ounce copper where noted. When resistance range is given, lower values are for 5-square-inch aluminum PC board. Test PWB is 0.062 inches thick and typically uses 0.635 mm trace width for power packages and 1.3 mm trace widths for non-power packages with a 100x100 mil probe land area at the end of each trace. |
Numéro de pièce similaire - UC28023N |
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Description similaire - UC28023N |
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