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KA1M0765R-TU Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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KA1M0765R-TU Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 12 page KA1M0765R/KA1M0765RC 4 Electrical Charcteristics (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(water test) process 3.The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function. Characteristic Symbol Test condition Min. Typ. Max. Unit UVLO SECTION Start threshold voltage VSTART -14 15 16 V Stop threshold voltage VSTOP After turn on 9 10 11 V OSCILLATOR SECTION Initial accuracy FOSC Ta=25 °C61 67 73 kHz Frequency change with temperature (2) ∆F/∆T −25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum duty cycle Dmax - 74 77 80 % 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 4.80 5.00 5.20 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 4.40 5.00 5.60 A PROTECTION SECTION Thermal shutdown temperature (Tj) (1) TSD - 140 160 - °C Over voltage protection voltage VOVP -23 25 28 V TOTAL DEVICE SECTION Start Up current ISTART VCC=14V 0.1 0.3 0.4 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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