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MC34167TV Datasheet(PDF) 3 Page - ON Semiconductor |
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MC34167TV Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 20 page MC34167, MC33167 http://onsemi.com 3 ELECTRICAL CHARACTERISTICS (VCC = 12 V, for typical values TA = +25°C, for min/max values TA is the operating ambient temperature range that applies (Notes 4, 5), unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OSCILLATOR Frequency (VCC = 7.5 V to 40 V) TA = +25°C TA = Tlow to Thigh fOSC 65 62 72 − 79 81 kHz ERROR AMPLIFIER Voltage Feedback Input Threshold TA =+ 25°C TA = Tlow to Thigh VFB(th) 4.95 4.85 5.05 − 5.15 5.20 V Line Regulation (VCC = 7.5 V to 40 V, TA = +25°C) Regline − 0.03 0.078 %/V Input Bias Current (VFB = VFB(th) + 0.15 V) IIB − 0.15 1.0 mA Power Supply Rejection Ratio (VCC = 10 V to 20 V, f = 120 Hz) PSRR 60 80 − dB Output Voltage Swing High State (ISource = 75 mA, VFB = 4.5 V) Low State (ISink = 0.4 mA, VFB = 5.5 V) VOH VOL 4.2 − 4.9 1.6 − 1.9 V PWM COMPARATOR Duty Cycle (VCC = 20 V) Maximum (VFB = 0 V) Minimum (VComp = 1.9 V) DC(max) DC(min) 92 0 95 0 100 0 % SWITCH OUTPUT Output Voltage Source Saturation (VCC = 7.5 V, ISource = 5.0 A) Vsat − (VCC −1.5) (VCC −1.8) V Off−State Leakage (VCC = 40 V, Pin 2 = GND) Isw(off) − 0 100 mA Current Limit Threshold (VCC = 7.5 V) Ipk(switch) 5.5 6.5 8.0 A Switching Times (VCC = 40 V, Ipk = 5.0 A, L = 225 mH, TA = +25°C) Output Voltage Rise Time Output Voltage Fall Time tr tf − − 100 50 200 100 ns UNDERVOLTAGE LOCKOUT Startup Threshold (VCC Increasing, TA = +25°C) Vth(UVLO) 5.5 5.9 6.3 V Hysteresis (VCC Decreasing, TA = +25°C) VH(UVLO) 0.6 0.9 1.2 V TOTAL DEVICE Power Supply Current (TA = +25°C ) Standby (VCC = 12 V, VComp < 0.15 V) Operating (VCC = 40 V, Pin 1 = GND for maximum duty cycle) ICC − − 36 40 100 60 mA mA 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 5. Tlow =0°C for MC34167 Thigh = + 70°C for MC34167 =− 40 °C for MC33167 = + 85 °C for MC33167 |
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