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MC33368 Datasheet(PDF) 3 Page - ON Semiconductor |
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MC33368 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 20 page MC33368 http://onsemi.com 3 ELECTRICAL CHARACTERISTICS (VCC = 14.5 V, for typical values TA = 25°C, for min/max values TJ = –25 to +125°C) Characteristic Symbol Min Typ Max Unit ERROR AMPLIFIER Input Bias Current (VFB = 5.0 V) IIB – 0 1.0 µA Input Offset Voltage (VComp = 3.0 V) VIO – 2.0 50 mV Transconductance (VComp = 3.0 V) gm 30 51 80 µmho Output Source (VFB = 4.6 V, VComp = 3.0 V) Output Sink (VFB = 5.4 V, VComp = 3.0 V) IO IO 9.0 9.0 17.5 17.5 30 30 µA OVERVOLTAGE COMPARATOR Voltage Feedback Input Threshold VFB(OV) 1.07 VFB 1.084 VFB 1.1 VFB V Propagation Time to Output TP – 705 – ns MULTIPLIER Input Bias Current, VMult (VFB = 0 V) IIB – –0.2 –1.0 µA Input Threshold, VComp Vth(M) 1.8 2.1 2.4 V Dynamic Input Voltage Range V Multiplier Input VMult 0 to 2.5 0 to 3.5 – Compensation VComp Vth(M) to (Vth(M) + 1.0) Vth(M) to (Vth(M) + 2.0) – Multiplier Gain (VMult = 0.5 V, VComp = Vth(M) + 1.0 V) K 0.25 0.51 0.75 1/V K + V CS Threshold V Mult V Comp –V th(M) VOLTAGE REFERENCE Voltage Reference (IO = 0 mA, TJ = 25°C) Vref 4.95 5.0 5.05 V Line Regulation (VCC = 10 V to 16 V) Regline – 5.0 100 mV Load Regulation (IO = 0 – 5.0 mA) Regload – 5.0 100 mV Total Output Variation Over Line, Load and Temperature Vref 4.8 – 5.2 V Maximum Output Current IO 5.0 10 – mA Reference Undervoltage Lockout Threshold Vth – 4.5 – V ZERO CURRENT DETECTOR Input Threshold Voltage (Vin Increasing) Vth 1.0 1.2 1.4 V Hysteresis (Vin Decreasing) VH 100 200 300 mV Delay to Output Tpd – 127 – ns CURRENT SENSE COMPARATOR Input Bias Current (VCS = 0 to 2.0 V) IIB – 0.2 1.0 µA Input Offset Voltage (VMult = –0.2 V) VIO – 4.0 50 mV Maximum Current Sense Input Threshold (VComp = 5.0 V, VMult = 5.0 V) Vth(max) 1.3 1.5 1.8 V Delay to Output (VLEB = 12 V, VComp = 5.0 V, VMult = 5.0 V) (VCS = 0 to 5.0 V Step, CL = 1.0 nF) tPHL(in/out) 50 270 425 ns FREQUENCY CLAMP Frequency Clamp Input Threshold Vth(FC) 1.9 2.0 2.1 V Frequency Clamp Capacitor Reset Current (VFC = 0.5 V) Ireset 0.5 1.7 4.0 mA Frequency Clamp Disable Voltage VDFC – 7.3 8.0 V |
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