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LTM4653 датащи(PDF) 4 Page - Linear Technology |
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LTM4653 датащи(HTML) 4 Page - Linear Technology |
4 / 32 page LTM4653 4 Rev 0 For more information www.analog.com The l denotes the specifications which apply over the specified internal operating temperature range (Note 2). TA = 25°C, Test Circuit, VIN = SVIN = 48V, EXTVCC = 24V, RUN = 3.3V, RISET = 480k, RfSET = 57.6kΩ, fSW = 1.5MHz (CLKIN driven with 1.2MHz clock signal) unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VRUN RUN Turn-On/-Off Thresholds RUN Input Turn-On Threshold, RUN Rising RUN Hysteresis l 1.08 1.2 130 1.32 V mV IRUN RUN Leakage Current RUN = 3.3V l 0.1 50 nA Oscillator and Phase-Locked Loop (PLL) fOSC Oscillator Frequency Accuracy VIN = 12V, ISETa = 5V, and: fSET Open Circuit RfSET = 57.6kΩ (See fs Specification) l 360 400 1.95 440 kHz MHz fSYNC PLL Synchronization Capture Range VIN = 12V, ISETa = 5V, CLKIN Driven with a GND- Referred Clock Toggling from 0.4V to 1.2V and Having a Clock Duty Cycle: From 10% to 90%; fSET Open Circuit From 40% to 60%; RfSET = 57.6kΩ 250 1.3 550 3 kHz MHz VCLKIN CLKIN Input Threshold VCLKIN Rising VCLKIN Falling 1.2 0.4 V V ICLKIN CLKIN Input Current VCLKIN = 5V VCLKIN = 0V –20 230 –5 500 μA μA Power Good Feedback Input and Power Good Output OVPGDFB Output Overvoltage PGOOD Upper Threshold PGDFB Rising l 620 645 675 mV UVPGDFB Output Undervoltage PGOOD Lower Threshold PGDFB Falling l 525 555 580 mV ∆VPGDFB PGOOD Hysteresis PGDFB Returning 8 mV RPGDFB Resistor Between PGDFB and SGND 4.94 4.99 5.04 kΩ RPGOOD PGOOD Pull-Down Resistance VPGOOD = 0.1V, VPGDFB < UVPGDFB or VPGDFB > OVPGDFB 700 1500 Ω IPGOOD(LEAK) PGOOD Leakage Current VPGOOD = 3.3V, UVPGDFB < VPGDFB < OVPGDFB 0.1 1 μA tPGOOD(DELAY) PGOOD Delay PGOOD Low to High (Note 4) PGOOD High to Low (Note 4) 16/fSW(HZ) 64/fSW(HZ) s s Current Monitor and Input Voltage Regulation Pins hIMONa IOUT/IIMONa Ratio of VOUT Output Current to IIMONa Current, IOUT = 4A l 36 40 44 k IOS(IMON) IMONa Offset Current IIMONa at IOUT = 0A –5 5 µA IMONb Resistor Resistor Between IMONb and SGND 9.8 10 10.2 kΩ VIMONa IMONa Servo Voltage IMONa Voltage During Output Current Regulation l 1.9 2.0 2.1 V VVINREG VINREG Servo Voltage VINREG Voltage During Output Current Regulation l 1.8 2.0 2.2 V IVINREG VINREG Leakage Current VINREG = 2V 1 nA INTVCC Regulator VINTVCC Channel Internal VCC Voltage, No INTVCC Loading (IINTVCC = 0mA) 3.6V ≤ SVIN ≤ 58V, EXTVCC = Open Circuit 5V ≤ SVIN ≤ 58V, 3.2V ≤ EXTVCC ≤ 26.5V 3.15 2.85 3.4 3.0 3.65 3.15 V V VEXTVCC(TH) EXTVCC Switchover Voltage (Note 4) 3.15 V ∆VINTVCC(LOAD)/ VINTVCC INTVCC Load Regulation 0mA ≤ IINTVCC ≤ 30mA –2 0.5 2 % ELECTRICAL CHARACTERISTICS |
Аналогичный номер детали - LTM4653 |
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Аналогичное описание - LTM4653 |
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