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FAN2110EMPX 데이터시트(PDF) 5 Page - Fairchild Semiconductor |
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FAN2110EMPX 데이터시트(HTML) 5 Page - Fairchild Semiconductor |
5 / 17 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN2110 • Rev. 1.0.2 5 Electrical Specifications Electrical specifications are the result of using the circuit shown in Figure 1 with VIN=12V, unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Unit Power Supplies SW=Open, VFB=0.7V, VCC=5V, fSW=600KHz 8 12 mA ICC VCC Current Shutdown: EN=0, VCC=5V 7 10 µA Rising VCC 4.1 4.3 4.5 V VUVLO VCC UVLO Threshold Hysteresis 300 mV Oscillator RT=50KΩ to GND 255 300 345 KHz fSW Frequency RT=24KΩ to GND 540 600 660 KHz tONmin Minimum On-Time (2) 50 65 ns VRAMP Ramp Amplitude, Peak-to-Peak 16VIN, 1.8VOUT, RT=30KΩ, RRAMP=200KΩ 0.53 V tOFFmin Minimum Off-Time (2) 100 150 ns Reference FAN2110MPX, 25°C 794 800 806 mV VFB Reference Voltage (see Figure 4 for Temperature Coefficient) FAN2110EMPX, 25°C 795 800 805 mV Error Amplifier G DC Gain (2) 80 85 dB GBW Gain Bandwidth Product (2) 12 15 MHz VCOMP Output Voltage (2) VCC=5V 0.4 3.2 V ISINK Output Current, Sourcing VCC=5V, VCOMP=2.2V 1.5 2.2 mA ISOURCE Output Current, Sinking VCC=5V, VCOMP=1.2V 0.8 1.2 mA IBIAS FB Bias Current VFB=0.8V, 25°C -850 -650 -450 nA Protection and Shutdown ILIM Current Limit (see Circuit Description) (2) RILIM=182 KΩ,, 25°C, fSW=500KHz, VOUT=1.5V, RRAMP=243KΩ, 16 Consecutive Clock Cycles (3) 12 14 16 A IILIM ILIM Current VCC=5V, 25°C -11 -10 -9 µA TTSD Over-Temperature Shutdown (2) +155 °C THYS Over-Temperature Hysteresis (2) Internal IC Temperature +30 °C VOVP Over-Voltage Threshold 2 Consecutive Clock Cycles (3) 110 115 121 %VOUT VUVSD Under-Voltage Shutdown 16 Consecutive Clock Cycles (3) 68 73 78 %VOUT VFLT Fault Discharge Threshold Measured at FB Pin 250 mV VFLT_HYS Fault Discharge Hysteresis Measured at FB Pin (VFB ~500mV) 250 mV Soft-Start tSS VOUT to Regulation (T0.8) 5.3 ms tEN Fault Enable/SSOK (T1.0) (2) fSW=500KHz 6.7 ms Continued on the following page… |
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