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FAN9612MX Folha de dados(PDF) 6 Page - Fairchild Semiconductor |
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FAN9612MX Folha de dados(HTML) 6 Page - Fairchild Semiconductor |
6 / 35 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN9611 / FAN9612 • Rev. 1.0.1 6 Electrical Characteristics Unless otherwise noted, VDD = 12V, TJ = -40°C to +125°C. Currents are defined as positive into the device and negative out of the device. Symbol Parameter Conditions Min. Typ. Max. Unit Supply ISTARTUP Startup Supply Current VDD = VON – 0.2V 80 110 µA IDD Operating Current Output Not Switching 3.7 5.2 mA IDD_DYM Dynamic Operating Current (4) fSW = 50kHz; CLOAD = 2nF 4 6 mA VON UVLO Start Threshold, FAN9611 VDD Increasing 9.5 10.0 10.5 V UVLO Start Threshold, FAN9612 12.0 12.5 13.0 V VOFF UVLO Stop Threshold Voltage VDD Decreasing 7.0 7.5 8.0 V VHYS UVLO Hysteresis, FAN9611 VON – VOFF 2.5 V UVLO Hysteresis, FAN9612 5.0 V Bias Regulator (C5VB = 0.1µF) V5VB 5VB Output Voltage TA = 25°C; ILOAD = 1mA 5.0 V Total Variation Over Line, Load, and Temperature 4.8 5.2 IOUT_MAX Maximum Output Current 5.0 mA Error Amplifier VEA Voltage Reference TA = 25°C 2.95 3.00 3.05 V Total Variation Over Line, Load, and Temperature 2.91 3.075 IBIAS Input Bias Current VFB = 1V to 3V; |VSS – VFB| ≤ 0.1V –0.2 0.2 µA IOUT_SRC Output Source Current VSS = 3V; VFB = 2.9V -13.7 -8 -4 µA IOUT_SINK Output Sink Current VSS = 3V; VFB = 3.1V 4 8 12 µA VOH Output High Voltage 4.5 4.7 V5VB V VOL Output Low Voltage ISINK < 100µA 0.0 0.1 0.2 V gM Transconductance 50 78 115 µmh o PWM VRAMP,OFST PWM Ramp Offset TA = 25°C 120 195 270 mV tON,MIN Minimum On-Time VFB > VSS 0 µs Maximum On-Time VMOT Maximum On-Time Voltage R = 125k Ω 1.16 1.23 1.30 V tON,MAX Maximum On-Time R = 125k Ω; VVIN = 2.5V; VCOMP > 4.5V; TA = 25°C 3.4 5.0 6.6 µs Restart Timer (Each Channel) fSW,MIN Minimum Switching Frequency VFB > VPWM_OFFSET 15.5 18.5 23.0 kHz Frequency Clamp (Each Channel) fSW,MAX Maximum Switching Frequency 520 605 750 kHz Continued on the following page… |
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