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ISL6237IRZ-T Datasheet(PDF) 5 Page - Intersil Corporation |
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ISL6237IRZ-T Datasheet(HTML) 5 Page - Intersil Corporation |
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5 / 35 page  5 FN6418.4 March 18, 2008 LDO Short-Circuit Current LDO = GND, BYP = GND 200 400 mA Undervoltage-Lockout Fault Threshold Rising edge of PVCC 4.35 4.5 V Falling edge of PVCC 3.9 4.05 V LDO 5V Bootstrap Switch Threshold to BYP Rising edge at BYP regulation point LDOREFIN = GND 4.53 4.68 4.83 V LDO 3.3V Bootstrap Switch Threshold to BYP Rising edge at BYP regulation point LDOREFIN = VCC 3.0 3.1 3.2 V LDO 5V Bootstrap Switch Equivalent Resistance LDO to BYP, BYP = 5V, LDOREFIN > (VCC - 1V) (Note 3) 0.7 1.5 Ω LDO 3.3V Bootstrap Switch Equivalent Resistance LDO to BYP, BYP = 3.3V, LDOREFIN < 0.3V (Note 3) 1.5 3.0 Ω REF Output Voltage No external load 1.980 2.000 2.020 V REF Load Regulation 0 < ILOAD < 50µA 10 mV REF Sink Current REF in regulation 10 µA VIN Operating Supply Current Both SMPSs on, FB1 = SKIP = GND, REFIN2 = VCC VOUT1 = BYP = 5.3V, VOUT2 = 3.5V 25 50 µA VIN Standby Supply Current VIN = 5.5V to 25V, both SMPSs off, EN_LDO = VCC 180 250 µA VIN Shutdown Supply Current VIN = 4.5V to 25V, EN1 = EN2 = EN_LDO = 0V 20 30 µA Quiescent Power Consumption Both SMPSs on, FB1 = SKIP = GND, REFIN2 = VCC, VOUT1 = BYP = 5.3V, VOUT2 = 3.5V 57 mW FAULT DETECTION Overvoltage Trip Threshold FB1 with respect to nominal regulation point +8 +11 +14 % REFIN2 with respect to nominal regulation point +12 +16 +20 % Overvoltage Fault Propagation Delay FB1 or REFIN2 delay with 50mV overdrive 10 µs POK_ Threshold FB1 or REFIN2 with respect to nominal output, falling edge, typical hysteresis = 1% -12 -9 -6 % POK_ Propagation Delay Falling edge, 50mV overdrive 10 µs POK_ Output Low Voltage ISINK = 4mA 0.2 V POK_ Leakage Current High state, forced to 5.5V 1 µA Thermal-Shutdown Threshold +150 °C Output Undervoltage Shutdown Threshold FB1 or REFIN2 with respect to nominal output voltage 65 70 75 % Output Undervoltage Shutdown Blanking Time From EN_ signal 10 20 30 ms INPUTS AND OUTPUTS FB1 Input Voltage Low level 0.3 V High level VCC - 1.0 V REFIN2 Input Voltage OUT2 Dynamic Range, VOUT2 =VREFIN2 0.5 2.50 V Fixed OUT2 = 1.05V 3.0 VCC - 1.1 V Fixed OUT2 = 3.3V VCC - 1.0 V LDOREFIN Input Voltage Fixed LDO = 5V 0.30 V LDO Dynamic Range, VLDO =2x VLDOREFIN 0.35 2.25 V Fixed LDO = 3.3V VCC - 1.0 V Electrical Specifications No load on LDO, OUT1, OUT2, and REF, VIN = 12V, EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V, VEN_LDO =5V, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C. (Continued) PARAMETER CONDITIONS MIN (Note 4) TYP MAX (Note 4) UNITS ISL6237 |
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