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FDMF6821A Datasheet(PDF) 9 Page - Fairchild Semiconductor |
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FDMF6821A Datasheet(HTML) 9 Page - Fairchild Semiconductor |
9 / 19 page © 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FDMF6821A • Rev. 1.0.0 9 Typical Performance Characteristics Test Conditions: VIN=12 V, VOUT=1 V, VCIN=5 V, VDRV=5 V, LOUT=250 nH, TA=25°C, and natural convection cooling, unless otherwise specified. Figure 12. Power Loss vs. Output Inductor Figure 13. Driver Supply Current vs. Switching Frequency Figure 14. Driver Supply Current vs. Driver Supply Voltage Figure 15. Driver Supply Current vs. Output Current Figure 16. UVLO Threshold vs. Temperature Figure 17. PWM Threshold vs. Driver Supply Voltage 0.975 0.980 0.985 0.990 0.995 1.000 1.005 200 250 300 350 400 450 500 Output Inductor, LOUT (nH) VIN = 12V, VDRV & VCIN = 5V, FSW = 300kHz, VOUT = 1V, IOUT = 30A 10 20 30 40 50 60 70 100 200 300 400 500 600 700 800 900 1000 1100 Module Switching Frequency, FSW (kHz) VIN = 12V, VDRV & VCIN = 5V, VOUT = 1V, IOUT = 0A 14 16 18 20 22 24 26 4.0 4.5 5.0 5.5 6.0 Driver Supply Voltage, VDRV & VCIN (V) VIN = 12V, VOUT = 1V, FSW = 300kHz, IOUT = 0A 0.97 0.98 0.99 1.00 1.01 1.02 1.03 0 5 10 15 20 25 30 35 40 45 50 55 Module Output Current, IOUT (A) VIN = 12V, VDRV & VCIN = 5V, VOUT = 1V FSW = 300kHz FSW = 1000kHz 2.6 2.7 2.8 2.9 3.0 3.1 3.2 -55 0 25 55 100 125 150 Driver IC Junction Temperature, TJ (oC) UVLOUP UVLODN 0.5 1.0 1.5 2.0 2.5 3.0 4.50 4.75 5.00 5.25 5.50 Driver IC Supply Voltage, VCIN (V) VTRI_HI VIH_PWM TA = 25°C VTRI_LO VIL_PWM VHIZ_PWM |
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