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NCP81172MNTXG Datasheet(PDF) 8 Page - ON Semiconductor |
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NCP81172MNTXG Datasheet(HTML) 8 Page - ON Semiconductor |
8 / 14 page NCP81172 http://onsemi.com 8 ELECTRICAL CHARACTERISTICS (continued) (VIN = 12 V, VVCC = VPVCC = 5 V, VREFIN = 1.0 V, VPSI = 3.3 V, typical values are referenced to TJ = 25C, Min and Max values are referenced to TJ from −40C to 100C. unless other noted) Characteristics Unit Max Typ Min Symbol Test Conditions POWER SAVE INPUT PSI High Threshold Rising Falling VhighPSI 2.05 2.4 2.2 2.55 V PSI Low Threshold Rising Falling VlowPSI 0.5 0.8 0.6 0.95 V PSI Input Bias Current IbiasPSI − − 1.0 mA SOFT START AND PGOOD Vout Startup Delay Measured from EN to Vout Start up from 0 V 1.15 ms Cout Startup Slew Rate 3.0 V/ms PGOOD Startup Delay Measured from EN to PGOOD assertion 2.0 ms PGOOD Shutdown Delay Measured from EN to PGOOD de−assertion 125 ns PGOOD Low Voltage IPGOOD= 4 mA (sink) VlPGOOD − − 0.3 V PGOOD Leakage Current PGOOD = 5 V IlkgPGOOD − − 1.0 mA PROTECTION Current Limit Threshold Measured from PGND to Phx (RILMT(1%) is connected from LG1 to GND) RILMT is open VOCTH 110 122 134 mV RILMT = 6.98 kW 72 82 92 RILMT = 21.0 kW 89 100 111 RILMT = 35.7 kW 146 163 180 RILMT = 49.9 kW OCP is disabled − Fast Under Voltage Protection (FUVP) Threshold Voltage from FB to GND 0.15 0.2 0.25 V Faster Under Voltage Protection (FUVP) Delay (Note 8) 2.0 ms Slow Under Voltage Protection (SUVP) Threshold Voltage from COMP to GND 3.0 V Slow Under Voltage Protection (SUVP) Delay (Note 8) 50 us Over Voltage Protection (OVP) Threshold Voltage from FB to GND 1.85 2.0 2.15 V Over Voltage Protection (OVP) Delay (Note 8) 2.0 ms Over Temperature Protection (OTP) Threshold (Note 8) Tsd 140 150 C Recovery Temperature Threshold (Note 8) Trec 125 C Over Temperature Protection (OTP) Delay (Note 8) 125 ns OUTPUT DISCHARGE Output Discharge Resistance per Phase Measured from PHx to PGND when EN is low (Note 8) Rdischrg 2 kW 8. Guaranteed by design, not tested in production. |
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