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NCL30082D Datasheet(PDF) 7 Page - ON Semiconductor |
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NCL30082D Datasheet(HTML) 7 Page - ON Semiconductor |
7 / 35 page NCL30082 www.onsemi.com 7 Table 3. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values TJ = 25°C, VCC = 12 V; For min/max values TJ = −40°C to +125°C, Max TJ = 150°C, VCC = 12 V) Description Unit Max Typ Min Symbol Test Condition VALLEY SELECTION Valley thresholds 1st to 2nd valley transition at LL and 2nd to 3rd valley HL 2nd to 1st valley transition at LL and 3rd to 2nd valley HL 2nd to 4th valley transition at LL and 3rd to 5th valley HL 4th to 2nd valley transition at LL and 5th to 3rd valley HL 4th to 7th valley transition at LL and 5th to 8th valley HL 7th to 4th valley transition at LL and 8th to 5th valley HL 7th to 11th valley transition at LL and 8th to 12th valley HL 11th to 7th valley transition at LL and 12th to 8th valley HL 11th to 13th valley transition at LL and 12th to 15th valley HL 13th to 11th valley transition at LL and 15th to 12th valley HL VREF decreases VREF increases VREF decreases VREF increases VREF decreases VREF increases VREF decreases VREF increases VREF decreases VREF increases VVLY1−2/2−3 VVLY2−1/3−2 VVLY2−4/3−5 VVLY4−2/5−3 VVLY4−7/5−8 VVLY7−4/8−5 VVLY7−11/8−12 VVLY11−7/12−8 VVLY11−13/12−15 VVLY13−11/15−12 177.5 185.0 117.5 125.0 – – – – – – 187.5 195.0 125.0 132.5 75.0 82.5 37.5 50.0 15.0 20.0 197.5 205.0 132.5 140.0 – – – – – – mV DIMMING SECTION DIM pin voltage for zero output current (OFF voltage) VDIM(EN) 0.66 0.7 0.74 V DIM pin voltage for maximum output current VDIM100 2.25 2.45 2.65 V Dimming range VDIM(range) – 1.75 – V Clamping voltage for DIM pin VDIM(CLP) – 7.8 – V Dimming pin pull−up current source IDIM(pullup) – 280 – nA THERMAL FOLD−BACK AND OVP Reference current for direct connection of an NTC (Note 6) IOTP(REF) 80 85 90 SD pin voltage at which thermal fold−back starts VTF(start) 0.9 1 1.1 V SD pin voltage at which thermal fold−back stops (Iout = 50% Iout(nom)) VTF(stop) 0.64 0.68 0.72 V SD pin voltage at which thermal fold−back stops NCL30082D (Iout = 25% Iout(nom)) VTF(stop)D 0.86 0.90 0.94 V Reference current for direct connection of an NTC IOTP(REF) 80 85 90 mA Fault detection level for OTP VSD decreasing VOTP(off) 0.47 0.5 0.53 V Fault detection level for OTP NCL30082D VOTP(off)D 0.81 0.85 0.89 V SD pin level at which controller re−start switching after OTP detection VSD increasing VOTP(on) 0.64 0.68 0.72 V SD pin level at which controller re−start switching after OTP detection NCL30082D VOTP(on)D 0.86 0.9 0.94 V SD pin Over temperature Protection Hysteresis NCL30082D VOTP(hys)D 15 50 100 mV VTF(start) over IOTP(REF) ratio (Note 5) TJ = +25°C to +125°C RTF(start) 10.8 11.7 12.6 k W VTF(stop) over IOTP(REF) ratio (Note 5) TJ = +25°C to +125°C RTF(stop) 7.4 8.0 8.6 k W VOTP(off) over IOTP(REF) ratio (Note 5) TJ = +25°C to +125°C ROTP(off) 5.4 5.9 6.4 k W VOTP(on) over IOTP(REF) ratio (Note 5) TJ = +25°C to +125°C ROTP(on) 7.4 8.0 8.6 k W VTF(stop) over IOTP(REF) ratio NCL30082D (Note 5) TJ = +25°C to +125°C RTF(stop)D 9.9 10.5 11.1 k W VOTP(off) over IOTP(REF) ratio NCL30082D (Note 5) TJ = +25°C to +125°C ROTP(off)D 9.4 10.0 10.6 k W VOTP(on) over IOTP(REF) ratio NCL30082D (Note 5) TJ = +25°C to +125°C ROTP(on)D 9.9 10.5 11.1 k W 5. A NTC is generally placed between the SD and GND pins. Parameters RTF(start), RTF(stop), ROTP(off) and ROTP(on) give the resistance the NTC must exhibit to respectively, enter thermal foldback, stop thermal foldback, trigger the OTP limit and allow the circuit recovery after an OTP situation. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 6. Guaranteed by design. |
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