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LM46000-Q1 Datasheet(PDF) 11 Page - Texas Instruments |
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LM46000-Q1 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 50 page  Quasi Peak Limit Average Limit Frequency (MHz) dBuV 100 90 80 70 60 50 40 30 20 10 0.15 1 10 30 Measured Peak Emissions Quasi Peak Limit Average Limit Frequency (MHz) dBuV 100 90 80 70 60 50 40 30 20 10 0.15 1 10 30 Measured Peak Emissions EN 55022 Class B Limit Frequency (MHz) dBuV 80 70 60 50 40 30 20 10 30 Evaluation Board Emissions 1000 100 Vertical Polarization Horizontal Polarization EN 55022 Class B Limit Frequency (MHz) dBuV 80 70 60 50 40 30 20 10 30 Evaluation Board Emissions 1000 100 Vertical Polarization Horizontal Polarization 10000 100000 1000000 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 VIN (V) Load = 0.01 A Load = 0.1 A Load = 0.5 A C001 10000 100000 1000000 5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6 6.8 7.0 VIN (V) Load = 0.01 A Load = 0.1 A Load = 0.5 A C001 LM46000-Q1 www.ti.com SNVSAA1A – JULY 2015 – REVISED AUGUST 2015 Typical Characteristics (continued) Unless otherwise specified, VIN = 24 V, VOUT = 3.3 V, FS = 500 kHz, L = 27 µH, COUT = 100 µF, CFF = 33 pF. Please refer to Application Performance Curves for Bill of Materials (BOM) for other VOUT and FS combinations. VOUT = 3.3 V FS = 500 kHz VOUT = 5 V FS = 1 MHz Figure 19. Switching Frequency vs VIN in Drop-Out Figure 20. Switching Frequency vs VIN in Drop-Out Operation Operation VOUT = 3.3 V FS = 500 kHz IOUT = 0.5 A VOUT = 5 V FS = 500 kHz IOUT = 0.5 A Measured on the LM46000QPWPEVM with default BOM. No input Measured on the LM46000QPWPEVM with L = 44 µH, COUT = 66 filter used. µF, CFF = 33 pF. No input filter used. Figure 21. Radiated EMI Curve Figure 22. Radiated EMI Curve VOUT = 3.3 V FS = 500 kHz IOUT = 0.5 A VOUT = 5 V FS = 500 kHz IOUT = 0.5 A Measured on the LM46000QPWPEVM with default BOM. EVM Measured on the LM46000QPWPEVM with L = 44 µH, COUT = 66 input filter: Lin = 1 µH Cd = 47 µF CIN4 = 68 µF µF, CFF = 33 pF. EVM input filter Lin = 1 µH Cd = 47 µF CIN4 = 68 µF Figure 23. Conducted EMI Curve Figure 24. Conducted EMI Curve Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM46000-Q1 |
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