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FS7M0680TU Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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FS7M0680TU Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 16 page FS7M0680 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 - 14 15 16 V Stop Threshold Voltage VSTOP After turn on 8 9 10 V OSCILLATOR SECTION Initial Frequency FOSC - 606672 kHz Frequency Change With Temperature (2) ∆F/∆T-25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum Duty Cycle Dmax - 45 50 55 % Voltage Stability Fstable 12V ≤ Vcc ≤ 23V 0 1 3 % FEEDBACK SECTION Feedback Source Current IFB Ta=25 °C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA Shutdown Delay Current Idelay Ta=25 °C, 5V ≤ Vfb ≤ VSD 4.0 5.0 6.0 µA Shutdown Feedback Voltage Vsd 6.9 7.5 8.1 V SOFT START SECTION Soft Start Voltage VSS VFB =2V 4.7 5.0 5.3 V Soft Start Resistor Rsoft Bias=Vref, SS=0V 16.0 18.5 22.0 k Ω 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 (SELT-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 - - °C Over Voltage Protection Voltage VOVP - 25 28 31 V Over Current Protection Voltage VOCP - 1.05 1.10 1.15 V TOTAL DEVICE SECTION Start Up Current ISTART VCC=14V - 40 80 uA Operating Supply Current (Control Part Only) IOP Ta=25 °C- 8 12 mA Iop(lat) After latch, Vcc=Vstop-0.1V 150 250 350 uA |
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