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LTM8001 Datasheet(PDF) 3 Page - Linear Technology |
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LTM8001 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 36 page  LTM4644/LTM4644-1 3 4644fe For more information www.linear.com/LTM4644 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, per the typical application. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Regulator Section: per Channel VIN, SVIN Input DC Voltage SVIN = VIN l 4 14 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, MODE = INTVCC,VIN = 4V to 14V, IOUT = 0A to 4A (Note 4) LTM4644: RFB(BOT) = 40.2k LTM4644-1: RFB(TOP) = 60.4k, RFB(BOT) = 40.2k l 1.477 1.50 1.523 V VRUN RUN Pin On Threshold VRUN Rising 1.1 1.2 1.3 V IQ(SVIN) Input Supply Bias Current VIN = 12V, VOUT = 1.5V, MODE = INTVCC VIN = 12V, VOUT = 1.5V, MODE = GND Shutdown, RUN = 0, VIN = 12V 6 2 11 mA mA µA IS(VIN) Input Supply Current VIN = 12V, VOUT = 1.5V, IOUT = 4A 0.62 A IOUT(DC) Output Continuous Current Range VIN = 12V, VOUT = 1.5V (Note 4) 0 4 A ΔVOUT (Line)/VOUT Line Regulation Accuracy VOUT = 1.5V, VIN = 4V to 14V, IOUT = 0A l 0.04 0.15 %/V ΔVOUT (Load)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 4A l 0.5 1 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 5 mV ΔVOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 30 mV tSTART Turn-On Time COUT = 100µF Ceramic, No Load, TRACK/SS = 0.01µF, VIN = 12V, VOUT = 1.5V 2.5 ms ΔVOUTLS Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, COUT = 47µF Ceramic, VIN = 12V, VOUT = 1.5V 160 mV tSETTLE Settling Time for Dynamic Load Step Load: 0% to 50% to 0% of Full Load, COUT = 47µF Ceramic, VIN = 12V, VOUT = 1.5V 40 µs IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 6 7 A VFB Voltage at FB Pin IOUT = 0A, VOUT = 1.5V, 0°C to 125°C IOUT = 0A, VOUT = 1.5V, –40°C to 125°C l 0.594 0.592 0.60 0.60 0.606 0.608 V V IFB Current at FB Pin (Note 3) ±30 nA RFBHI Resistor Between VOUT and FB Pins LTM4644 Only 60.05 60.40 60.75 kΩ ITRACK/SS Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V 2.5 4 µA VIN(UVLO) VIN Undervoltage Lockout VIN Falling VIN Hysteresis 2.4 2.6 350 2.8 V mV tON(MIN) Minimum On-Time (Note 3) 40 ns tOFF(MIN) Minimum Off-Time (Note 3) 70 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative VFB Ramping Positive –13 7 –10 10 –7 13 % % IPGOOD PGOOD Leakage 2 µA VPGL PGOOD Voltage Low IPGOOD = 1mA 0.02 0.1 V VINTVCC Internal VCC Voltage SVIN = 4V to 14V 3.2 3.3 3.4 V VINTVCC Load Reg INTVCC Load Regulation ICC = 0mA to 20mA 0.5 % fOSC Oscillator Frequency 1 MHz CLKIN CLKIN Threshold 0.7 V |
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Similar Description - LTM8001 |
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