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UCD8220RSAR Datasheet(PDF) 6 Page - Texas Instruments |
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UCD8220RSAR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 32 page  www.ti.com ELECTRICAL CHARACTERISTICS UCD8220, UCD8620 SLUS652B – MARCH 2005 – REVISED SEPTEMBER 2005 V DD = 12 V, 4.7-µF capacitor from VDD to AGND, 1 µF from PVDD to PGND, 0.22-µF capacitor from 3V3 to AGND, T A = TJ = -40°C to 105°C, (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY SECTION UCD8620 500 800 Supply current, OFF VDD = 4.2 V µA UCD8220 300 500 (UCD8620), outputs not switching, CLK = low 2 3 Supply current, ON mA (UCD8220), outputs not switching, CLK = low 2 3 LOW VOLTAGE UNDERVOLTAGE LOCKOUT (UCD8220 only) VDD UVLO ON 4.25 4.5 4.75 V VDD UVLO OFF 4.05 4.25 4.45 VDD UVLO hysteresis 150 250 350 mV 110-V HIGH VOLTAGE UNDERVOLTAGE LOCKOUT AND JFET CONTROL (UCD8620 ONLY) VDD UVLO ON 12.5 13 13.5 VDD UVLO OFF 7 7.5 8 JFET turn-off threshold (VSTART_JFET) No switching, JFET on at startup 12.5 13 13.5 V JFET turn-on threshold No switching 11.5 12 12.5 JFET on/off hysteresis 1 VDD < 5 V, VIN = 18 V to 76 V 3 5 8 High voltage JFET current mA VDD = 12 V, VIN = 18 V to 76 V 10 Thermal shutdown, OFF (1) VDD = 5 V to 12 V 130 145 160 °C Thermal shutdown, ON (1) VDD > 5 V 110 125 140 REFERENCE / EXTERNAL BIAS SUPPLY 3V3 initial set point TA = 25°C, ILOAD = 0 3.267 3.3 3.333 V 3V3 set point over temperature 3.234 3.3 3.366 3V3 load regulation ILOAD = 1 mA to 10 mA, VDD = 5 V - 1 6.6 mV 3V3 line regulation VDD = 4.75 V to 12 V, ILOAD = 10 mA - 1 6.6 Short circuit current VDD = 4.75 to 12 V 11 20 35 mA 3V3 OK threshold, ON 3.3 V rising 2.9 3.0 3.1 V 3V3 OK threshold, OFF 3.3 V falling 2.7 2.8 2.9 CLOCK INPUT (CLK) HIGH, positive-going input threshold 1.65 - 2.08 voltage (VIT+) LOW negative-going input threshold 1.16 - 1.5 V voltage (VIT-) Input voltage hysteresis, 0.6 - 0.8 (VIT+ - VIT-) Frequency OUTx = 1 MHz - - 2 MHz Minimum allowable off time (1) 20 ns SLOPE COMPENSATION (ISET) ISET Voltage VISET , 3V3 = 3.3 V, +/-2% 1.78 1.84 1.90 V RISET = 6.19 kΩ to AGND, CS = 0.25 V, CTRL = 2.5 V 1.48 2.12 2.76 m, VSLOPE (I-Mode) RISET = 100 kΩ to AGND, CS = 0.25 V, CTRL = 2.5 V 0.099 0.142 0.185 RISET = 499 kΩ to AGND, CS = 0.25 V, CTRL = 2.5 V 0.019 0.028 0.037 V/µs RISET = 4.99 kΩ to 3V3, CTRL = 2.5 V 1.44 2.06 2.68 m, VSLOPE (V-Mode) RISET = 100 kΩ to 3V3, CTRL = 2.5 V 0.079 0.114 0.148 RISET = 402 kΩ to 3v3, CTRL = 2.5 V 0.019 0.027 0.035 (1) Ensured by design. Not 100% tested in production. 6 |
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