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MC33363P Datasheet(PDF) 3 Page - ON Semiconductor |
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MC33363P Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 12 page MC33363 3 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (continued) (VCC = 20 V, RT = 10 k, CT = 390 pF, CPin 8 = 1.0 µF, for typical values TJ = 25°C, for min/max values TJ is the operating junction temperature range that applies (Note 2), unless otherwise noted.) Characteristic Unit Max Typ Min Symbol ERROR AMPLIFIER (Pins 9, 10) Output Voltage Swing High State (ISource = 100 µA, VFB < 2.0 V) Low State (ISink = 100 µA, VFB > 3.0 V) VOH VOL 4.0 – 5.3 0.2 – 0.35 V OVERVOLTAGE DETECTION (Pin 11) Input Threshold Voltage Vth 2.47 2.6 2.73 V Input Bias Current (Vin = 2.6 V) IIB – 100 500 nA PWM COMPARATOR (Pins 7, 9) Duty Cycle Maximum (VFB = 0 V) Minimum (VFB = 2.7 V) DC(max) DC(min) 48 – 50 0 52 0 % POWER SWITCH (Pin 16) Drain–Source On–State Resistance (ID = 200 mA) TJ = 25°C TJ = Tlow to Thigh RDS(on) – – 14 – 17 32 Ω Drain–Source Off–State Leakage Current (VDS = 700 V) ID(off) – 0.2 50 µA Rise Time tr – 50 – ns Fall Time tf – 50 – ns OVERCURRENT COMPARATOR (Pin 16) Current Limit Threshold (RT = 10 k) Ilim 0.5 0.72 0.9 A STARTUP CONTROL (Pin 1) Peak Startup Current (Vin = 400 V) VCC = 0 V VCC = (Vth(on) – 0.2 V) Istart – – 20 6.0 – – mA Off–State Leakage Current (Vin = 50 V, VCC = 20 V) ID(off) – 40 200 µA UNDERVOLTAGE LOCKOUT (Pin 3) Startup Threshold (VCC Increasing) Vth(on) 11 15.2 18 V Minimum Operating Voltage After Turn–On VCC(min) 7.5 9.5 11.5 V TOTAL DEVICE (Pin 3) Power Supply Current Startup (VCC = 10 V, Pin 1 Open) Operating ICC – – 0.25 3.2 0.5 5.0 mA RT, TIMING RESISTOR (kΩ) 1.0 7.0 1.0 M VCC = 20 V CT = 1.0 µF TA = 25°C Figure 1. Oscillator Frequency versus Timing Resistor RT, TIMING RESISTOR (kΩ) Figure 2. Power Switch Peak Drain Current versus Timing Resistor 500 k 200 k 100 k 50 k 20 k 10 k 0.8 0.6 0.4 0.2 0.1 10 15 20 30 50 7.0 10 15 20 30 40 70 VCC = 20 V TA = 25°C CT = 100 pF CT = 200 pF CT = 500 pF CT = 1.0 nF CT = 2.0 nF CT = 5.0 nF CT = 10 nF Inductor supply voltage and inductance value are adjusted so that Ipk turn–off is achieved at 5.0 µs. 70 50 |
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