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KA1M0280 Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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KA1M0280 Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 10 page KA1M0280RB/KA1H0280RB 4 Electrical Characteristics (CONTROL part) (Continued) (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 KA1M0280RB 61 67 73 kHz KA1H0280RB 90 100 110 Frequency Change With Temperature (2) ∆F/∆T-25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum Duty Cycle Dmax KA1M0280RB 74 77 80 % KA1H0280RB 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 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 1.05 1.2 1.35 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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