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KA5Q0740RTTU Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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KA5Q0740RTTU Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 12 page KA5Q0740RT 5 Electrical Characteristics (Continued) (Ta=25 °C unless otherwise specified) Note: 1. These parameters is the current flowing in the Control IC. 2. These parameters, although guaranteed, are tested in EDS(wafer test) process. 3. These parameters indicate Inductor Current. Parameter Symbol Condition Min. Typ. Max. Unit SYNC SECTION Normal Sync High Threshold Voltage VNSH Vcc = 16V, Vfb = 5V 4.0 4.6 5.2 V Normal Sync Low Threshold Voltage VNSL Vcc = 16V, Vfb = 5V 2.3 2.6 2.9 V Burst Sync High Threshold Voltage VBSH Vcc = 10.5V, Vfb = 0V 3.2 3.6 4.0 V Burst Sync Low Threshold Voltage VBSL Vcc = 10.5V, Vfb = 0V 1.1 1.3 1.5 V BURST MODE SECTION Burst mode Low Threshold Voltage VBURL Vfb = 0V 10.4 11.0 11.6 V Burst mode High Threshold Voltage VBURH Vfb = 0V 11.4 12.0 12.6 V Burst mode Enable Feedback Voltage VBEN Vcc = 10.5V 0.7 1.0 1.3 V Burst mode Peak Current Limit IBU_PK Vcc = 10.5V 0.65 0.85 1.1 A PRIMARY SIDE REGULATION SECTION Primary Regulation Threshold Voltage VPR Ifb = 700uA, Vfb = 4V 32.0 32.5 33.0 V Primary Regulation Transconductance GPR - 2.0 2.6 - mA/V CURRENT LIMIT(SELF-PROTECTION)SECTION Peak Current Limit(Note3) IPK - 4.4 5.0 5.6 A TOTAL DEVICE SECTION Start Up Current ISTART Vfb = GND, VCC = 14V - 0.1 0.2 mA Operating Supply Current (Note1) IOP Vfb = GND, VCC = 16V -10 18 mA IOP(MIN) Vfb = GND, VCC = 10V IOP(MAX) Vfb = GND, VCC = 28V |
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