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LTM4633 Datasheet(PDF) 4 Page - Analog Devices |
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LTM4633 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 36 page  LTM4671 4 Rev. B For more information www.analog.com 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), SVIN = VIN = 12V, unless otherwise noted. Per the typical application in Figure 30. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VRUN RUN Pin ON Threshold VRUN Rising Hysteresis 1.10 1.20 150 1.30 V mV UVLO Undervoltage Lockout INTVCC Falling Hysteresis 2.4 2.55 0.4 2.7 V V ITRACK/SS Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V 6 µA tON(MIN) Minimum On-Time (Note 5) 25 ns tOFF(MIN) Minimum Off-Time (Note 5) 80 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative VFB Ramping Positive –10 6 –8 8 –6 10 % % RPGOOD PGOOD Pull-Down Resistance 1mA Load 8 15 Ω INTVCC Internal VCC Voltage 3.2 3.3 3.4 V FREQ Default Switching Frequency 600 kHz CLKIN_H CLKIN_H Input High Threshold CLKIN_H Input Low Threshold 1 0.3 V V Switching Regulator Section: (5A Channels) VIN Input DC Voltage l 3.1 20 V VIN(AFTER START-UP) Input DC Voltage After Start-Up l 2.9 20 V VOUT(RANGE) Output Voltage Range l 0.6 5.5 V VOUT(DC) Output Voltage, Total Variation with Line and Load CIN = 22µF, COUT = 100µF Ceramic RFB = 40.2k, Continuous Current Mode VIN = 3.1V to 20V, IOUT = 0A to 5A l 1.477 1.50 1.523 V IQ(VIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, Continuous Current Mode VIN = 12V, VOUT = 1.5V, Burst Mode Operation (IOUT = 0.5A VIN = 12V, RUN = 0V, Shutdown 18 82 75 mA mA µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 5A 0.7 A IOUT(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 4) 0 5 A ∆VOUT(LINE)/VOUT Line Regulation Accuracy VOUT = 1.5V, VIN = 3.1V to 20V, IOUT = 0A l 0.001 0.05 %/V ∆VOUT(LOAD)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 5A l 0.2 0.5 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic VIN = 12V, VOUT = 1.5V 8 mV ∆VOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 15 mV tSTART Turn-On Time TRACK/SS = 0.01µF, VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic 5 ms ∆VOUTLS Peak Deviation for Dynamic Load Load: 0% to 25% to 0% of Full Load VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic 30 mV tSETTLE Settling Time for Dynamic Load Step Load: 0% to 25% to 0% of Full Load VIN = 12V, VOUT = 1.5V, COUT = 100µF Ceramic 70 µs IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 6 A VFB Voltage at VFB Pin IOUT = 0A, VOUT = 1.5V l 0.592 0.6 0.608 V IFB Current at VFB Pin (Note 6) ±30 nA RFB(TOP) Resistor Between VOUT and VFB Pins 60.05 60.40 60.75 kΩ VRUN RUN Pin ON Threshold VRUN Rising Hysteresis 1.15 1.25 200 1.35 V mV |
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