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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM4620A датащи(PDF) 4 Page - Linear Technology |
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LTM4620A датащи(HTML) 4 Page - Linear Technology |
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4 / 34 page  LTM4650 4 4650fb For more information www.linear.com/LTM4650 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range. Specified as each individual output channel. TA = 25°C (Note 2), VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted. Per the typical application in Figure 22. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IOUT(PK) (Each Channel) Output Current Limit VIN = 12V, VOUT = 1.2V 35 A Control Section VFB1, VFB2 Voltage at VFB Pins IOUT = 0A, VOUT = 1.2V l 0.594 0.600 0.606 V IFB (Note 5) –5 –20 nA VOVL Feedback Overvoltage Lockout l 0.64 0.66 0.68 V TRACK1 (I), TRACK2 (I) Track Pin Soft-Start Pull-Up Current TRACK1 (I),TRACK2 (I) Start at 0V 1 1.25 1.5 µA UVLO Undervoltage Lockout (Falling) 3.3 V UVLO Hysteresis 0.6 V tON(MIN) Minimum On-Time (Note 5) 90 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 ±5 µA VPGOOD PGOOD Trip Level VFB with Respect to Set Output Voltage VFB Ramping Negative VFB Ramping Positive –10 10 % % INTVCC Linear Regulator VINTVCC Internal VCC Voltage 6V < VIN < 15V 4.8 5 5.2 V VINTVCC Load Regulation INTVCC Load Regulation ICC = 0mA to 50mA 0.75 2 % VEXTVCC EXTVCC Switchover Voltage EXTVCC Ramping Positive 4.5 4.7 V VEXTVCC(DROP) EXTVCC Dropout ICC = 20mA, VEXTVCC = 5V 50 100 mV VEXTVCC(HYST) EXTVCC Hysteresis 220 mV Oscillator and Phase-Locked Loop Frequency Nominal Nominal Frequency fSET = 1.2V 450 500 550 kHz Frequency Low Lowest Frequency fSET = 0.93V 400 kHz Frequency High Highest Frequency fSET > 2.4V, Up to INTVCC 780 kHz fSET Frequency Set Current 9 10 11 µA RMODE_PLLIN MODE_PLLIN Input Resistance 250 kΩ CLKOUT Phase (Relative to VOUT1) PHASMD = GND PHASMD = Float PHASMD = INTVCC 60 90 120 Deg Deg Deg CLK High CLK Low Clock High Output Voltage Clock Low Output Voltage 2 0.2 V V |
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