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SC480IMLTRT Datasheet(PDF) 4 Page - Semtech Corporation |
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SC480IMLTRT Datasheet(HTML) 4 Page - Semtech Corporation |
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4 / 25 page  4 © 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC480 POWER MANAGEMENT TEST CONDITIONS: V IN = 15V, VCCA = VDDP = VTTEN = EN/PSV = 5V, VDDQ = VTTIN = 1.8V, RTON = 1MΩ. TAMB = -40 TO +85C. Parameter Conditions 25°C -40°C to 85°C Units Min Typ Max Min Max Under-Voltage Fault Delay FB Forced Below UV V TH 8 clks(3) Under-Voltage Blank Time From EN High 440 clks(3) Output Over-Voltage Fault With Respect to FB Regulation Point +16 +12 +20 % Over-Voltage Fault Delay FB Above Over-Voltage Threshold 5 μs PGD Low Output Voltage Sink 1mA 0.1 V PGD Leakage Current FB in Regulation, PGD = 5V 1 μA PGD UV Threshold With Respect to FB Regulation Point -10 -12 -8 % PGD Fault Delay FB Forced Outside PGD Window 5 μs VCCA Under-Voltage (UVLO) Falling Edge (Hysteresis 100 mV) 4 3.70 4.35 V VTT Fault Protection UV Lower Threshold VTT w/rt REF -12 -16 -8 % OV Upper Threshold VTT w/rt REF +12 +8 +16 % Fault Shutdown Delay VTT Outside OV/UV Window 50 μs Thermal Shutdown(4)(5) 160 150 170 °C Inputs/Outputs Logic Input Low Voltage EN/PSV Low/Low (Disabled) 1.2 V VTTEN Low (VTT Disabled) 0.6 Logic Input High Voltage EN/PSV Low/High (Enabled, Psave Disabled) 1.2 2.4 V VTTEN High (VTT Enabled) 2.4 Logic Input High Voltage EN/PSV High/High (Enabled, Psave Enabled) 3.1 V EN/PSV Input Resistance Sourcing 1.5 MΩ Sinking 1.0 MΩ VTTEN Leakage Current -1 +1 μA Soft-Start VDDQ Soft-Start Ramp Time EN/PSV High to PGD High 440 clks(3) VTT Soft-Start Ramp Rate(6) 5.5 mV/μs Electrical Characteristics (Cont.) |
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