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LTC7150S Datasheet(PDF) 3 Page - Linear Technology |
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LTC7150S Datasheet(HTML) 3 Page - Linear Technology |
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3 / 22 page  LTC7150S 3 7150sfa For more information www.linear.com/LTC7150S ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS SVIN SVIN Operating Voltage l 3.1 20 V PVIN PVIN Operating Voltage 20 V VOUT VOUT Operating Voltage 0.6 5.5 V IQ Input Quiescent Current (Note 3) Active Mode Shutdown Mode; VRUN = 0V 2 20 4 40 mA µA VFB Feedback Reference Voltage (Note 4) ITH = 1.0V ITH = 1.0V, –40°C to 125°C l 0.598 0.594 0.600 0.600 0.602 0.606 V V ∆VFB(LINE+LOAD) Feedback Voltage Line and Load Regulation (Note 4) l 0.2 0.5 % IFB Feedback Pin Input Current ±50 nA gm(EA) Error Amplifier Transconductance ITH = 1.0V 1.0 1.3 1.6 mS tON(MIN) Minimum On-Time l 20 25 nS tOFF(MIN) Minimum Off-Time 50 nS ILIM Positive Inductor Valley Current Limit FB = 0.58V l 21 24 27 A ILIM-ITH Current Limit at Different ITH Voltage ITH = 1.4V ITH = 1V ITH = 0.6V ITH = 0.2V l l l l 9.5 –2.5 –14.5 –27 12 0 –12 –24 14.5 2.5 –9.5 –21 A A A A RTOP Top Power NMOS On-Resistance INTVCC = 3.3V 6 mΩ RBOT Bottom Power NMOS On-Resistance INTVCC = 3.3V 2.5 mΩ ISW (Note 5) Top Switch Leakage Bottom Switch Leakage VIN = 20V, VSW = 0V VIN = 20V, VSW = 20V 0.1 1 1 50 µA µA VUVLO INTVCC Undervoltage Lockout Threshold INTVCC Falling INTVCC Hysteresis (Rising) 2.45 2.6 250 2.75 V mV VRUN RUN Rising RUN Falling Hysteresis 1.15 1.20 100 1.25 V mV IRUN Run Leakage Current 100 nA VINTVCC Internal VCC Voltage 3.2 3.3 3.4 V OV Output Overvoltage PGOOD Upper Threshold VFB Rising VFB Falling Hysteresis 6 8 10 10 % mV UV Output Undervoltage PGOOD Lower Threshold VFB Falling VFB Rising Hysteresis –6 –8 10 –10 % mV RPGOOD PGOOD Pull-Down Resistance VPGOOD = 100mV 8 15 Ω IPGOOD PGOOD Leakage VFB = 0.6V 2 µA tPGOOD PGOOD Delay PGOOD Low to High PGOOD High to Low 6 25 cycles cycles ITRACK/SS Track Pull-Up Current VTRACK/SS = 0V 6 10 µA fOSC Oscillator Frequency RT = 162kΩ l 0.9 1 1.1 MHz fSYNC SYNC Capture Range % of Programmed Frequency 70 130 % MODE/SYNC MODE/SYNC Threshold Input High MODE/SYNC Threshold Input Low 0.3 1 V V |
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