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MC33466H-30JT1 Datasheet(PDF) 3 Page - ON Semiconductor |
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MC33466H-30JT1 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 12 page MC33466 3 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (VCC = 2.0 V, IO = 10 mA and TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OSCILLATOR Frequency LX output EXT output fosc 40 80 50 100 60 120 kHz Oscillator Minimum Startup Voltage (IO = 0 mA) Vstart – 0.8 0.9 V Oscillator Minimum Supply Voltage (IO = 0 mA) VCC 0.7 – – V LX OUTPUT (JT1 SUFFIX) ON State Sink Current (VLx = 0.4 V) ILx mA 30KT1 Suffix 60 – – 33KT1 Suffix 63 – – 50KT1 Suffix 80 – – VLx Voltage Limit (Note 1) VLxLim 0.65 0.8 1.0 V OFF State Leakage Current (VLx = 6.0 V) ILKG – – 0.5 µA EXT OUTPUT (LT1 SUFFIX) ON State Source Current (VEXT = VO – 0.4 V) Isource mA 30LT1 Suffix 1.5 – – 33LT1 Suffix 1.575 – – 50LT1 Suffix 2.0 – – OFF State Sink Current (VEXT = 0.4 V) Isink mA 30LT1 Suffix 1.5 – – 33LT1 Suffix 1.575 – – 50LT1 Suffix 2.0 – – TOTAL DEVICE Maximum Duty Ratio Each Cycle D 70 80 90 % Output Voltage VO V 30KT1 or 30LT1 Suffix 2.925 3.0 3.075 33KT1 or 33LT1 Suffix 3.218 3.3 3.383 50KT1 or 50LT1 Suffix 4.875 5.0 5.125 Soft–Start Time (Note 2) Tss 0.5 2.0 – ms Quiescent Bias Current (Vin = 2.0 V, IO = 0 mA) IQ µA 30JT1 Suffix – 15 25 33JT1 Suffix – 17 27 50JT1 Suffix – 30 45 Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA) 30JT1 Suffix – 1.2 5.0 33JT1 Suffix – 1.2 5.0 50JT1 Suffix – 2.0 5.0 Quiescent Bias Current (Vin = 2.0 V, IO = 0 mA) IQ µA 30LT1 Suffix – 30 50 33LT1 Suffix – 34.5 56 50LT1 Suffix – 60 90 Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA) 30LT1 Suffix – 1.2 5.0 33LT1 Suffix – 1.2 5.0 50LT1 Suffix – 2.0 5.0 NOTES: 1. When the Lx switch is turned on, ILx current carried through the RDS(on) of the Lx switch results in VLx. When VLx reaches VLxLim, the Lx switch is turned off by the Lx switch protection circuit. 2. The soft–start circuit turn–on sequence is as follows: a) Vin is applied. b) The internal IC Vref is held at zero for 200 µs. During this time, the error amplifier output voltage ramps up to the positive voltage rail. c) The internal reference steps up to 0.7 V after 200 µs delay has timed out. d) The error amplifier output voltage integrates down to its steady state value. As the error amplifier output integrates down, the output Lx pin of EXT pin pulse width gradually widens to its steady operating value. |
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