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IR3899 Datasheet(PDF) 10 Page - International Rectifier |
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IR3899 Datasheet(HTML) 10 Page - International Rectifier |
10 / 43 page - 10 - August 08, 2012 |DATA SHEET | 3.4 10 IR3899 9A Highly Integrated SupIRBuck TM Single‐Input Voltage, Synchronous Buck Regulator PD‐97661 TYPICAL EFFICIENCY AND POWER LOSS CURVES PVin = 12V, Vcc = Internal LDO (4.4V/6.4V), Io = 0A‐9A, Fs = 600KHz, Room Temperature, No Air Flow. Note that the efficiency and power loss curves include the losses of IR3899, the inductor losses and the losses of the input and output capacitors. The table below shows the inductors used for each of the output voltages in the efficiency measurement. VOUT (V) LOUT (µH) P/N DCR (mΩ) 1.0 0.51 59PR9876N (Vitec) 0.29 1.2 0.51 59PR9876N (Vitec) 0.29 1.8 0.68 ETQP4LR68XFC (Panasonic) 1.58 3.3 1.2 MPL105‐1R2 (Delta) 2.9 5 1.2 MPL105‐1R2 (Delta) 2.9 78 80 82 84 86 88 90 92 94 96 98 0.9 1.8 2.7 3.6 4.5 5.4 6.3 7.2 8.1 9 Load Current (A) 1.0V 1.2V 1.8V 3.3V 5.0V 0.2 0.6 1 1.4 1.8 2.2 2.6 0.9 1.8 2.7 3.6 4.5 5.4 6.3 7.2 8.1 9 Load Current (A) 1.0V 1.2V 1.8V 3.3V 5.0V |
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