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MC34262DG Arkusz danych(PDF) 3 Page - ON Semiconductor |
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MC34262DG Arkusz danych(HTML) 3 Page - ON Semiconductor |
3 / 19 page MC34262, MC33262 http://onsemi.com 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = 12 V (Note 6), 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 MULTIPLIER Dynamic Input Voltage Range Multiplier Input (Pin 3) Compensation (Pin 2) VPin 3 VPin 2 0 to 2.5 Vth(M) to (Vth(M) + 1.0) 0 to 3.5 Vth(M) to (Vth(M) + 1.5) − − V Multiplier Gain (VPin 3 = 0.5 V, VPin 2 = Vth(M) + 1.0 V) (Note 8) K 0.43 0.65 0.87 1/V ZERO CURRENT DETECTOR Input Threshold Voltage (Vin Increasing) Vth 1.33 1.6 1.87 V Hysteresis (Vin Decreasing) VH 100 200 300 mV Input Clamp Voltage High State (IDET = + 3.0 mA) Low State (IDET = − 3.0 mA) VIH VIL 6.1 0.3 6.7 0.7 − 1.0 V CURRENT SENSE COMPARATOR Input Bias Current (VPin 4 = 0 V) IIB − − 0.15 −1.0 mA Input Offset Voltage (VPin 2 = 1.1 V, VPin 3 = 0 V) VIO − 9.0 25 mV Maximum Current Sense Input Threshold (Note 9) Vth(max) 1.3 1.5 1.8 V Delay to Output tPHL(in/out) − 200 400 ns DRIVE OUTPUT Output Voltage (VCC = 12 V) Low State (ISink = 20 mA) Low State (ISink = 200 mA) High State (ISource = 20 mA) High State (ISource = 200 mA) VOL VOH − − 9.8 7.8 0.3 2.4 10.3 8.4 0.8 3.3 − − V Output Voltage (VCC = 30 V) High State (ISource = 20 mA, CL = 15 pF) VO(max) 14 16 18 V Output Voltage Rise Time (CL = 1.0 nF) tr − 50 120 ns Output Voltage Fall Time (CL = 1.0 nF) tf − 50 120 ns Output Voltage with UVLO Activated (VCC = 7.0 V, ISink = 1.0 mA) VO(UVLO) − 0.1 0.5 V RESTART TIMER Restart Time Delay tDLY 200 620 − ms UNDERVOLTAGE LOCKOUT Startup Threshold (VCC Increasing) Vth(on) 11.5 13 14.5 V Minimum Operating Voltage After Turn−On (VCC Decreasing) VShutdown 7.0 8.0 9.0 V Hysteresis VH 3.8 5.0 6.2 V TOTAL DEVICE Power Supply Current Startup (VCC = 7.0 V) Operating Dynamic Operating (50 kHz, CL = 1.0 nF) ICC − − − 0.25 6.5 9.0 0.4 12 20 mA Power Supply Zener Voltage (ICC = 25 mA) VZ 30 36 − V 5. Maximum package power dissipation limits must be observed. 6. Adjust VCC above the startup threshold before setting to 12 V. 7. Tlow =0°C for MC34262 Thigh = +85°C for MC34262 = −40°C for MC33262 = +105°C for MC33262. 8. K + Pin 4 Threshold VPin 3 (VPin2 * Vth(M)) 9. This parameter is measured with VFB = 0 V, and VPin 3 = 3.0 V. |
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