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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM4630A датащи(PDF) 4 Page - Linear Technology |
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LTM4630A датащи(HTML) 4 Page - Linear Technology |
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4 / 34 page  LTM4646 4 4646f For more information www.linear.com/LTM4646 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range (Note 2). Specified as each individual output channel. TA = 25°C, VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted. Per the typical application in Figure 18. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Control Section VFB1 Voltage at VFB1 Pin IOUT = 0A, VOUT = 1.5V l 0.592 0.600 0.608 V VFB2 Voltage at VFB2 Pin IOUT = 0A, VOUT = 1.5V VFB2 is Gained Back Up by 2x Internal to 0.6V l 0.296 0.3 0.304 V IFB1, IFB2 (Note 6) 0 ±50 nA VOVL1, VOVL2 Feedback Overvoltage Lockout VFB1 Rising VFB2 Rising l l 0.630 0.315 0.645 0.323 0.660 0.330 V V ITRACK/SS1, ITRACK/SS2 Track Pin Soft-Start Pull-Up Current TRACK/SS1,TRACK/SS2 = 0V 1.0 µA UVLO INTVCC Undervoltage Lockout INTVCC Falling VIN (Note 6) INTVCC Rising VIN (Note 6) 3.3 3.7 4.2 4.5 V V tOFF(MIN) Minimum Top Gate Off-Time (Note 6) 90 ns tON(MIN) Minimum Top Gate On-Time (Note 6) 30 ns RFBHI1, RFBHI2 Resistor Between VOUTS1, VOUTS2 and VFB1, VFB2 Pins for Each Output 60.05 60.4 60.75 kΩ VPGOOD1, VPGOOD2 Low PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V IPGOOD PGOOD Leakage Current VPGOOD = 5V –2 0 2 µA VPGOOD PGOOD Trip Level VFB with Respect to Set Output Voltage VFB Ramping Negative VFB Ramping Positive –7.5 7.5 % % Internal Linear Regulator DRVCC Internal DRVCC Voltage 6V < CPWR < 20V 5.0 5.3 5.6 V DRVCC Load Regulation DRVCC Load Regulation ICC = 0mA to 100mA –1.3 –3.0 % VEXTVCC EXTVCC Switchover Voltage EXTVCC Ramping Positive 4.4 4.6 4.8 V VEXTVCC(DROP) EXTVCC Dropout ICC = 20mA, VEXTVCC = 5V 80 120 mV VEXTVCC(HYST) EXTVCC Hysteresis 200 mV Frequency and Clock Synchronization Frequency Nominal Nominal Frequency RFREQ = 115kΩ 300 350 400 kHz Frequency Low Lowest Frequency RFREQ = 165kΩ (Note 5) 250 kHz Frequency High Highest Frequency RFREQ = 29.4kΩ 1.17 1.3 1.43 MHz RMODE_PLLIN MODE_PLLIN Input Resistance MODE_PLLIN to SGND 600 k Channel 2 Phase VOUT2 Phase Relative to VOUT1 PHASMD = SGND PHASMD = Float PHASMD = INTVCC 180 180 240 Deg Deg Deg CLKOUT Phase Phase (Relative to VOUT1) PHASMD = SGND PHASMD = Float PHASMD = INTVCC 60 90 120 Deg Deg Deg VPLLIN High VPLLIN Low Clock Input High Level to MODE_PLLIN Clock Input Low Level to MODE_PLLIN 2 0.5 V V |
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