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LTP8800-1AIPVPBF 数据表(PDF) 5 Page - Analog Devices |
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LTP8800-1AIPVPBF 数据表(HTML) 5 Page - Analog Devices |
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5 / 20 page  LTP8800-1A 5 Rev. B For more information www.analog.com TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response 112.5A to 150A Load Step 37.5A/µs 45VIN to 0.75VOUT Load Transient Response 112.5A to 150A Load Step 37.5A/µs 54VIN to 0.75VOUT Load Transient Response 112.5A to 150A Load Step 37.5A/µs 65VIN to 0.75VOUT Full Load Start-Up and Shut-Down Triggered by CTRL No Load Start-Up and Shut-Down Triggered by CTRL 45VIN No Load VOUT Ripple 54VIN No Load VOUT Ripple 65VIN No Load VOUT Ripple FIGURE 10 CIRCUIT VIN = 45V, VOUT = 0.75V, fsw = 1MHz COUT = 560µF × 10 POSCAP + 100µF × 8 CERAMIC REG FE01h = 24, REG FE02h = 223, REG FE03h = 72, REG FE04h = 149 20µs/DIV VOUT AC-COUPLED 20mv/DIV IOUT 50A/DIV 88001a G04 FIGURE 10 CIRCUIT VIN = 54V, VOUT = 0.75V, fsw = 1MHz COUT = 560µF × 10 POSCAP + 100µF × 8 CERAMIC REG FE01h = 24, REG FE02h = 223, REG FE03h = 72, REG FE04h = 149 20µs/DIV VOUT AC-COUPLED 20mV/DIV IOUT 50A/DIV 88001a G05 FIGURE 10 CIRCUIT VIN = 65V, VOUT = 0.75V, fsw = 1MHz COUT = 560µF × 10 POSCAP + 100µF × 8 CERAMIC REG FE01h = 24, REG FE02h = 223, REG FE03h = 72, REG FE04h = 149 20µs/DIV VOUT AC-COUPLED 20mV/DIV IOUT 50A/DIV 88001a G06 CTRL IIN VOUT IOUT 2ms/DIV VOUT 250mV/DIV IIN 2A/DIV IOUT 25A/DIV 88001a G07 CTRL IIN VOUT IOUT 2ms/DIV VOUT 250mV/DIV IIN 100mA/DIV IOUT 25A/DIV 88001a G08 FIGURE 10 CIRCUIT VIN = 45V, VOUT = 0.75V, fSW = 1MHz NO LOAD ON VOUT 500ns/DIV VOUT AC-COUPLED 5mV/DIV IIN 5A/DIV IOUT 50A/DIV 88001a G09 FIGURE 10 CIRCUIT VIN = 54V, VOUT = 0.75V, fSW = 1MHz NO LOAD ON VOUT 500ns/DIV VOUT AC-COUPLED 5mV/DIV IIN 5A/DIV IOUT 50A/DIV 88001a G10 FIGURE 10 CIRCUIT VIN = 65V, VOUT = 0.75V, fSW = 1MHz NO LOAD ON VOUT 500ns/DIV VOUT AC-COUPLED 5mV/DIV IIN 5A/DIV IOUT 50A/DIV 88001a G11 900mVOUT Efficiency and Power Loss vs Output Current EFFICIENCY POWER LOSS 7V0 AND 3V3 LOSSES INCLUDED 45VIN 54VIN 65VIN LOAD CURRENT (A) 10 30 50 70 90 110 130 150 50 55 60 65 70 75 80 85 90 4 6 8 10 12 14 16 18 20 88001a G03 |
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