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MC33067DWG Scheda tecnica(PDF) 4 Page - ON Semiconductor |
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MC33067DWG Scheda tecnica(HTML) 4 Page - ON Semiconductor |
4 / 16 page MC34067, MC33067 http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (continued) (VCC = 12 V [Note 6], ROSC= 18.2 k, RVFO = 2940 W, COSC = 300 pF, RT = 2370 W, CT = 300 pF, CL = 1.0 nF. For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies (Note 7), unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OSCILLATOR Frequency (Error Amp Output Low) Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh) fOSC(low) 490 525 550 kHz Frequency (Error Amp Output High) Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh) fOSC(high) 1850 2050 2200 kHz Oscillator Control Input Voltage, Pin 3 Vin − 2.5 − V ONE−SHOT Drive Output Off−Time TA = 25°C Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh) tBlank 235 225 250 − 270 280 ns DRIVE OUTPUTS Output Voltage Low State (ISink = 20 mA) Low State (ISink = 200 mA) High State (ISource = 20 mA) High State (ISource = 200 mA) VOL VOH − − 9.5 9.0 0.8 1.5 10.3 9.7 1.2 2.0 − − V Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA) VOL(UVLO) − 0.8 1.2 V Output Voltage Rise Time (CL = 1.0 nF) tr − 20 50 ns Output Voltage Fall Time (CL = 1.0 nF) tf − 15 50 ns FAULT COMPARATOR Input Threshold Vth 0.93 1.0 1.07 V Input Bias Current (VPin 10 = 0 V) IIB − − 2.0 −10 mA Propagation Delay to Drive Outputs (100 mV Overdrive) tPLH(In/Out) − 60 100 ns SOFT−START Capacitor Charge Current (VPin 11 = 2.5 V) Ichg 4.5 9.0 14 mA Capacitor Discharge Current (VPin 11 = 2.5 V) Idischg 3.0 8.0 − mA UNDERVOLTAGE LOCKOUT Startup Threshold, VCC Increasing Enable/UVLO Adjust Pin Open Enable/UVLO Adjust Pin Connected to VCC Vth(UVLO) 14.8 8.0 16 9.0 17.2 10 V Minimum Operating Voltage After Turn−On, VCC Decreasing Enable/UVLO Adjust Pin Open Enable/UVLO Adjust Pin Connected to VCC VCC(min) 8.0 7.6 9.0 8.6 10 9.6 V Enable/UVLO Adjust Shutdown Threshold Voltage Vth(Enable) 6.0 7.0 − V Enable/UVLO Adjust Input Current (Pin 9 = 0 V) Iin(Enable) − − 0.2 − 1.0 mA TOTAL DEVICE Power Supply Current (Enable/UVLO Adjust Pin Open) Startup (VCC = 13.5 V) Operating (fOSC = 500 kHz) (Note 6) ICC − − 0.5 27 0.8 35 mA 5. Maximum package power dissipation limits must be observed. 6. Adjust VCC above the Startup Threshold voltage before setting to 12 V. 7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 8. Tlow =0 °C for MC34067 =− 40 °C for MC33067 Thigh =+ 70°C for MC34067 =+ 85 °C for MC33067 |
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