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FAN7547AM Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FAN7547AM Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 9 page © 2005 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN7547A Rev. 1.0.3 5 Electrical Characteristics Unless otherwise noted, these specifications apply to the operating ambient temperatures for the FAN7547A with -25 °C ≤ T A ≤ 85°C and VCC = 10V. Symbol Parameter Conditions Min. Typ. Max. Unit UVLO SECTION VST Start Voltage 4.9 5.4 5.9 V IST Start Current VCC = 4.5V 50 200 μA ICC Operating Current 7V < VCC< 30V 5.5 8.0 mA REFERENCE SECTION Vref Reference Voltage TJ = 25°C, Iref = 0mA, 7V < VCC< 30V 2.95 3.05 3.15 V SOFT-START SECTION ISS Soft -Start Charge Current CSS = 4V 33 40 47 μA Ipwm PWM Discharge Current CSS = 4V 48 70 85 μA OSCILLATOR SECTION fpwm Operating Frequency 7V < VCC < 30V 170 200 230 Hz Vpwmh Osc High Voltage 1.3 V VpwmI Osc Low Voltage 0.1 V DIMMING SECTION Va Analog Dimming Range Vms > 2V 03 V Vb 3V Va PWM Dimming Range Vms < 1V 2.1 2.5 2.9 V Vb 02.5 V Va Mixed Dimming Range Vms =1.5V or open 1.2 3.0 V Vb 03 V MODE SELECTION Vsa Analog Dimming Select Voltage 1.5 2.0 2.5 V Vsp PWM Dimming Select Voltage 0.7 1.0 1.3 V Vsc Mixed Dimming Select Voltage 1.2 1.5 1.8 V OPEN-LAMP PROTECTION Vopen Open-Lamp Detect Voltage 7V < VCC < 30V 2.5 3.0 3.5 V SHUTDOWN PROTECTION Isd Shutdown Current 7V < VCC < 30V 123 μA Vsd Shutdown Voltage 2.5 3.0 3.5 V OUTPUT SECTION VOH Output High Voltage VCC = 10V 8 9 10 V VOL Output Low Voltage VCC = 10V 1 V tr Rising Time VCC = 10V 120 200 ns tf Falling Time VCC = 10V 60 120 ns VUV Output Voltage with UVLO Activated VCC = 4V 2 4 V |
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