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LTM4686BIVPBF 数据表(PDF) 11 Page - Analog Devices |
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LTM4686BIVPBF 数据表(HTML) 11 Page - Analog Devices |
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11 / 130 page  LTM4686B 11 Rev. 0 For more information www.analog.com TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current at 2.5VIN Efficiency vs Load Current at 3.3VIN Efficiency vs Load Current at 5VIN Single Phase Single Output Pulse-Skipping (Discontinuous) Mode Efficiency Dual Phase Single Output Load Transient Response, 5VIN to 1VOUT Single Phase Single Output Load Transient Response, 5VIN to 1VOUT Single Phase Single Output Load Transient Response, 3.3VIN to 1VOUT VOUT0 50mV/DIV AC-COUPLED IOUT 5A/DIV 40µs/DIV FIGURE 63 CIRCUIT AT 5VIN, 0A TO 7A LOAD STEP AT 7A/µs 4686B G06 VOUT 20mV/DIV AC-COUPLED IOUT 5A/DIV 50µs/DIV FIGURE 32 CIRCUIT AT 3.3VIN, VOUT_COMMANDn SET TO 1.000V. 7A TO 14A LOAD STEP AT 7A/µs 4686B G07 Dual Output Concurrent Rail Start-Up/Shutdown Dual Output Start-Up/Shutdown with a Prebiased Load VOUT0, VOUT1 500mV/DIV IOUT0 5A/DIV RUN0, RUN1 5V/DIV 2ms/DIV FIGURE 63 CIRCUIT AT 5VIN, 80m LOAD ON VOUT0, NO LOAD ON VOUT1. TON_RISE0 = 3ms, TON_RISE1 = 5.297ms, TOFF_DELAY1 = 0ms, TOFF_DELAY0 = 2.43ms, TOFF_FALL1 = 5.328ms, TOFF_FALL0 = 3ms, ON_OFF_CONFIGn = 0x1E 4686B G08 VOUT0, VOUT1 500mV/DIV IDIODE 1mA/DIV RUN0, RUN1 5V/DIV 2ms/DIV FIGURE 63 CIRCUIT AT 5VIN, 80m LOAD ON VOUT0, 500 ON VOUT1. VOUT1 PRE-BIASED THROUGH A DIODE. TON_RISE0 = 3ms, TON_RISE1 = 5.297ms, TOFF_DELAY1 = 0ms, TOFF_DELAY0 = 2.43ms, TOFF_FALL1 = 5.328ms, TOFF_FALL0 = 3ms, ON_OFF_CONFIG1 = 0x1F, ON_OFF_CONFIG0 = 0x1E 4686B G09 VOUT 20mV/DIV AC-COUPLED IOUT 10A/DIV 50µs/DIV FIGURE 30 CIRCUIT AT 5VIN, VOUT_COMMANDn SET TO 1.000V. 14A TO 28A LOAD STEP AT 14A/µs 4686B G05 TA = 25°C, 5VIN to 1VOUT, switching frequency set per Table 7, unless otherwise noted. OUTPUT CURRENT (A) 0 4 8 12 16 20 24 28 70 75 80 85 90 95 100 4686B G01 1.8VOUT 1.5VOUT 1.2VOUT 1VOUT 0.9VOUT 0.8VOUT 0.7VOUT 0.6VOUT OUTPUT CURRENT (A) 0 4 8 12 16 20 24 28 70 75 80 85 90 95 100 4686B G02 2.5VOUT 1.8VOUT 1.5VOUT 1.2VOUT 1VOUT 0.9VOUT 0.8VOUT 0.7VOUT 0.6VOUT 3.3VOUT 2.5VOUT 1.8VOUT 1.5VOUT 1.2VOUT 1VOUT 0.9VOUT 0.8VOUT 0.7VOUT 0.6VOUT OUTPUT CURRENT (A) 0 4 8 12 16 20 24 28 70 75 80 85 90 95 100 4686B G03 MFR_PWM_MODEn[0] = 0b OUTPUT CURRENT (A) 0 2 4 6 8 10 12 14 40 50 60 70 80 90 4686B G04 5VIN TO 1.5VOUT, 1MHz VIN = SVIN = VINn = INTVCC |
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