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LM2854 Folha de dados(PDF) 7 Page - Texas Instruments |
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LM2854 Folha de dados(HTML) 7 Page - Texas Instruments |
7 / 30 page 0 4 84 86 88 90 92 94 96 LOAD CURRENT (A) 1 2 3 VIN = 3.3V VIN = 5.0V 0 4 76 94 LOAD CURRENT (A) 1 2 3 78 80 82 84 86 88 90 92 VIN = 3.3V VIN = 5.0V 0 4 80 82 84 86 88 90 92 94 LOAD CURRENT (A) 1 2 3 VIN = 3.3V VIN = 5.0V 0 4 92 93 94 95 96 97 98 LOAD CURRENT (A) 1 2 3 VIN = 4.0V VIN = 5.0V 0 4 74 92 LOAD CURRENT (A) 1 2 3 76 78 80 82 84 86 88 90 VIN = 3.3V VIN = 5.0V 0 4 89 90 91 92 93 94 95 96 97 LOAD CURRENT (A) 1 2 3 VIN = 3.3V VIN = 5.0V LM2854 www.ti.com SNVS560B – MARCH 2008 – REVISED NOVEMBER 2008 Typical Performance Characteristics (continued) Unless otherwise specified, the following conditions apply: VIN = PVIN = AVIN = EN = 5.0V, CIN is 47 µF 10V X5R ceramic capacitor, LO is from TDK SPM6530T family; TAMBIENT = 25°C for efficiency curves, bode plots and waveforms, and TJ = 25°C for all others. LM2854 1 MHz Efficiency vs. LM2854 1 MHz Efficiency vs. IOUT VOUT = 0.8V, LO = 0.47 µH, 3.3 mΩ DCR IOUT VOUT = 2.5V, LO = 1.0 µH, 7.1 mΩ DCR Figure 14. Figure 15. LM2854 1 MHz Efficiency vs. LM2854 1 MHz Efficiency vs. IOUT VOUT = 1.2V, LO = 0.68 µH, 4.9 mΩ DCR IOUT VOUT = 3.3V, LO = 1.0 µH, 7.1 mΩ DCR Figure 16. Figure 17. LM2854 1 MHz Efficiency vs. LM2854 500 kHz Efficiency vs. IOUT VOUT = 1.8V, LO = 1.0 µH, 7.1 mΩ DCR IOUT VOUT = 0.8V, LO = 1.0 µH, 7.1 mΩ DCR Figure 18. Figure 19. Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM2854 |
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