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KA1M0680RB 데이터시트(PDF) 4 Page - Fairchild Semiconductor |
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KA1M0680RB 데이터시트(HTML) 4 Page - Fairchild Semiconductor |
4 / 12 page KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB 4 Electrical Characteristics (CONTROL part) (Ta=25 °C unless otherwise specified) Note: 1. These parameters, although guaranteed, are not 100% tested in production 2. These parameters, although guaranteed, are tested in EDS (wafer test) process Parameter Symbol Condition Min. Typ. Max. Unit UVLO SECTION Start threshold voltage VSTART - 141516 V Stop threshold voltage VSTOP After turn on 9 10 11 V OSCILLATOR SECTION Initial accuracy FOSC KA1M0680B 61 67 73 kHz KA1M0680RB 61 67 73 KA1H0680B 90 100 110 KA1H0680RFB 90 100 110 Frequency change with temperature (2) ∆F/∆T −25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum duty cycle Dmax KA1M0680B 74 77 80 % KA1M0680RB 74 77 80 KA1H0680B 64 67 70 KA1H0680RFB 64 67 70 FEEDBACK SECTION Feedback source current IFB Ta=25 °C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA Shutdown Feedback voltage VSD -6.9 7.5 8.1 V Shutdown delay current Idelay Ta=25 °C, 5V ≤ Vfb ≤ VSD 4.0 5.0 6.0 µA SOFT START SECTION Soft Start Voltage VSS VFB =2V 4.7 5.0 5.3 V Soft Start Current ISS Sync & S/S=GND 0.8 1.0 1.2 mA REFERENCE SECTION Output voltage (1) Vref Ta=25 °C 4.805.005.20 V Temperature Stability (1)(2) Vref/ ∆T −25°C ≤ Ta ≤ +85°C- 0.3 0.6 mV/ °C CURRENT LIMIT (SELF-PROTECTION) SECTION Peak Current Limit IOVER Max. inductor current 3.52 4.00 4.48 A PROTECTION SECTION Thermal shutdown temperature (Tj) (1) TSD - 140 160 - °C Over voltage protection voltage VOVP - 232528 V TOTAL DEVICE SECTION Start Up current ISTART VCC=14V 0.1 0.3 0.45 mA Operating supply current (control part only) IOP Ta=25 °C 6 12 18 mA VCC zener voltage VZ ICC=20mA 30 32.5 35 V |
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