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LTM4627EVPBF データシート(PDF) 6 Page - Linear Technology |
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LTM4627EVPBF データシート(HTML) 6 Page - Linear Technology |
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6 / 28 page  LTM4627 6 4627f TYPICAL PERFORMANCE CHARACTERISTICS Start-Up with Soft-Start Short-Circuit Protection No Load Short-Circuit Protection 15A Load PIN FUNCTIONS VIN (A1-A6, B1-B6, C1-C6): Power Input Pins. Apply input voltage between these pins and GND pins. Recommend placing input decoupling capacitance directly between VIN pins and GND pins. VOUT (J1-J10, K1-K11, L1-L11, M1-M11): Power Output Pins. Apply output load between these pins and GND pins. Recommend placing output decoupling capacitance directly between these pins and GND pins. Review Table 4. GND (B7, B9, C7, C9, D1-D6, D8, E1-E7, E9, F1-F9, G1-G9, H1-H9): Power Ground Pins for Both Input and Output Returns. PGOOD (F11, G12): Output Voltage Power Good Indicator. Open-drain logic output that is pulled to ground when the output voltage exceeds a ±10% regulation window. Both pins are tied together internally. SGND (G11, H11, H12): Signal Ground Pin. Return ground path for all analog and low power circuitry. Tie a single connection to the output capacitor GND in the application. See layout guidelines in Figure 17. 2.5V Transient Response 3.3V Transient Response 5.0V Transient Response VIN = 12V, VOUT = 2.5V, CFF = 82pF, CCOMP = 33pF OUTPUT CAPACITOR = 4 100μF CERAMIC X5R 100μs/DIV 4627 G10 50mV/DIV 7.5A LOAD STEP VIN = 12V, VOUT = 3.3V, CFF = 82pF, CCOMP = 33pF OUTPUT CAPACITOR = 2 100μF CERAMIC X5R 100μs/DIV 4627 G11 50mV/DIV 7.5A LOAD STEP VIN = 12V, VOUT = 5V, CFF = 82pF, CCOMP = 33pF OUTPUT CAPACITOR = 2 100μF CERAMIC X5R 100μs/DIV 4627 G12 50mV/DIV 7.5A LOAD STEP VIN = 12V, VOUT = 1.5V, IOUT = 15A INPUT CAP 150μF SANYO ELECTROLYTIC CAP AND 22μF 2 X5R CERAMIC CAP OUTPUT CAP 1 100μF X5R CERAMIC AND 470μF 0.1μF CAP FROM TRACK/SS TO GND 100μs/DIV 4627 G13 VOUT IOUT 500mV/DIV 5A/DIV VIN = 12V, VOUT = 1.5V, IOUT = 0A 4ms/DIV 4627 G14 500mV/DIV 1A/DIV VOUT IIN VIN = 12V, VOUT = 1.5V, IOUT = 15A 4ms/DIV 4627 G15 500mV/DIV 1A/DIV VOUT IIN |
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