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XR79115EL-F Datasheet(PDF) 3 Page - Exar Corporation |
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XR79115EL-F Datasheet(HTML) 3 Page - Exar Corporation |
3 / 19 page © 2014 Exar Corporation XR79115 3 / 19 exar.com/XR79115 Rev 1B VCC UVLO Start Threshold, Rising Edge 4.00 4.25 4.40 V VCC UVLO Hysteresis 200 mV Reference Voltage VREF Reference Voltage VIN = 5V to 22V, VCC regulating 0.597 0.600 0.603 V VIN = 4.5V to 5.5V, VCC tied to VIN 0.596 0.600 0.604 V VIN = 5V to 22V, VCC regulating 0.594 0.600 0.606 V VIN = 4.5V to 5.5V, VCC tied to VIN DC Line Regulation CCM, closed loop, VIN=4.5V-22V, applies to any COUT ±0.10 % DC Load Regulation CCM, closed loop, IOUT=0A-15A, applies to any COUT ±0.35 % Programmable Constant On-Time TON(MIN) Minimum Programmable On-Time RON = 6.98k, VIN = 22V 120 ns TON2 On-Time 2 RON = 6.98k, VIN = 12V 156 192 228 ns f Corresponding to On-Time 2 VOUT = 1.0V 450 535 660 kHz TON3 On-Time 3 RON = 16.2k, VIN = 12V 341 412 483 ns Minimum Off-Time 250 350 ns Diode Emulation Mode Zero Crossing Threshold DC value measured during test -2 mV Soft-start SS Charge Current -14 -10 -6 μA SS Discharge Current Fault present 1mA VCC Linear Regulator VCC Output Voltage VIN = 6V to 22V, ILOAD = 0 to 30mA 4.8 5.0 5.2 V VIN = 5V, ILOAD = 0 to 20mA 4.6 4.8 V Power Good Output Power Good Threshold -10 -7.5 -5 % Power Good Hysteresis 24 % Power Good Sink Current 1 mA Protection: OCP, OTP, Short-Circuit Hiccup Timeout 110 ms ILIM Pin Source Current 45 50 55 μA ILIM Current Temperature Coefficient 0.4 %/°C OCP Comparator Offset -8 0 +8 mV Symbol Parameter Conditions Min Typ Max Units |
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