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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM4615 датащи(PDF) 5 Page - Linear Technology |
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LTM4615 датащи(HTML) 5 Page - Linear Technology |
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5 / 32 page  LTM4642 5 4642fb For more information www.linear.com/LTM4642 Typical perForMance characTerisTics 3.3VIN to 1.5VOUT Transient Response 5VIN to 1.5VOUT Transient Response 3.3VIN to 1VOUT Transient Response Efficiency vs Load Current at 3.3VIN, CCM Mode, External 5V Bias 5VIN to 1VOUT Transient Response Efficiency vs Load Current at 5VIN, CCM Mode 12VIN to 1VOUT Transient Response Efficiency vs Load Current at 12VIN, CCM Mode Efficiency vs Load Current at 20VIN, CCM Mode (Refer to Figures 19 and 20) TA = 25°C, unless otherwise noted. LOAD CURRENT (A) 0 92 96 4 4642 G01 88 84 1 2 3 0.5 1.5 2.5 3.5 100 90 94 86 98 3.3V TO 2.5V (600kHz) 3.3V TO 1.8V (600kHz) 3.3V TO 1.5V (600kHz) 3.3V TO 1.2V (600kHz) 3.3V TO 1V (600kHz) LOAD CURRENT (A) 0 80 90 4 4642 G02 70 1 2 3 0.5 1.5 2.5 3.5 100 75 85 95 5V TO 3.3V (800kHz) 5V TO 2.5V (800kHz) 5V TO 1.8V (750kHz) 5V TO 1.5V (650kHz) 5V TO 1.2V (650kHz) 5V TO 1V (650kHz) LOAD CURRENT (A) 0 80 90 4 4642 G02 70 1 2 3 0.5 1.5 2.5 3.5 100 75 85 95 12V TO 5V (1.2MHz) 12V TO 3.3V (1MHz) 12V TO 2.5V (1MHz) 12V TO 1.8V (800kHz) 12V TO 1.5V (800kHz) 12V TO 1.2V (650kHz) 12V TO 1V (650kHz) LOAD CURRENT (A) 0 80 90 4 4642 G04 70 60 1 2 3 0.5 1.5 2.5 3.5 100 75 85 65 95 20V TO 1.8V (800kHz) 20V TO 1.5V (800kHz) 20V TO 1.2V (650kHz) 20V TO 1V (650kHz) 20V TO 5V (1.2MHz) 20V TO 3.3V (1MHz) 20V TO 2.5V (1MHz) COUT = 100µF 15m ESR POSCAP, 47µF CERAMIC CFF = 470pF fSW = 600kHz 4642 G05 1VOUT 20mV/DIV ISTEP = 2A/µs 2A/DIV 20µs/DIV IN OUT COUT = 100µF 15m ESR POSCAP, 47µF CERAMIC CFF = 470pF fSW = 650kHz 4642 G06 ISTEP = 2A/µs 2A/DIV 1VOUT 20mV/DIV 20µs/DIV IN OUT COUT = 100µF 15m ESR POSCAP, 47µF CERAMIC CFF = 470pF fSW = 650kHz 4642 G07 ISTEP = 2A/µs 2A/DIV 1VOUT 20mV/DIV 20µs/DIV IN OUT COUT = 120µF 22m ESR OSCON SVP, 47µF CERAMIC CFF = 470pF fSW = 600kHz 4642 G08 ISTEP = 2A/µs 2A/DIV 1.5VOUT 50mV/DIV 20µs/DIV IN OUT COUT = 120µF 22m ESR OSCON SVP, 47µF CERAMIC CFF = 470pF fSW = 650kHz 4642 G09 ISTEP = 2A/µs 2A/DIV 1.5VOUT 50mV/DIV 20µs/DIV IN OUT |
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