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IR3897 Datasheet(PDF) 11 Page - International Rectifier |
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IR3897 Datasheet(HTML) 11 Page - International Rectifier |
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11 / 45 page ![]() - 11 - AUGUST 08, 2012 |DATA SHEET | Rev 3.3 11 IR3897 4A Highly Integrated SupIRBuck TM Single‐Input Voltage, Synchronous Buck Regulator PD‐97663 80 82 84 86 88 90 92 94 96 98 0.40.8 1.21.6 2 2.4 2.83.2 3.6 4 Load Current (A) 1.0V 1.2V 1.8V 3.3V 5.0V 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 Load Current (A) 1.0V 1.2V 1.8V 3.3V 5.0V TYPICAL EFFICIENCY AND POWER LOSS CURVES PVin = 12V, Vcc = External 5V, Io = 0A‐4A, Fs = 600KHz, Room Temperature, No Air Flow. Note that the efficiency and power loss curves include the losses of IR3897, 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 1.5 PCMB065T-1R5MS (Cyntec) 6.7 1.2 1.5 PCMB065T-1R5MS (Cyntec) 6.7 1.8 2.2 7443340220 (Wurth Elektronik) 4.4 3.3 3.3 7443340330 (Wurth Elektronik) 6.5 5 3.3 7443340330 (Wurth Elektronik) 6.5 |
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