MIC2310: Single-FET, Constant Power-Limit Hot Swap Controller - Micrel - #9

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Micrel, Inc. MIC2310 July 2008 9 M9999-070108-A Symbol Parameter Condition Min Typ Max Units IGATEUP GATE Pin Pull-up Current Charge pump ON, VGATE = VSOURCE = +13.2V -60 -30 -15 ìA Normal GATE Pin Pull-down Current ENABLE = LOW, VGATE = 2V IGATEDN 1.0 2.7 4.5 mA Fault-mode GATE Pin Pulldown current I_FLT Latched and OC Detector Trip or in UVLO, VGATE = 2V 45 120 mA VGATEFT(EXT) GATE-to-AGND Fault Threshold ENABLE = LOW 5 V VSRCFT(EXT) SOURCE-to-AGND Fault Threshold ENABLE = LOW 5 V VTHLOADSENSE Open LOADSENSE Threshold VSOURCE - VLOADSENSE 4 V VTHGNDSENSE Open GNDSENSE Threshold VGNDSENSE 4 V EN = LOW, 0V SOURCE VCC 18 ìA EN = HIGH, SOURCE = VCC 1.5 ìA ISOURCE SOURCE Pin Input Current EN = HIGH, /FAULT Condition 0V SOURCE VCC 18 ìA ILOADSENSE LOADSENSE Pin Input +10.8V VLOADSENSE +13.2V 300 ìA Current VLOADSENSE = 0V DISCH = HIGH 300 ìA IGNDSENSE GNDSENSE Pin Input Current VGNDSENSE = 0V -400 ìA ÄVDS(FET) Shorted RSENSE Threshold Voltage at SOURCE (VSENSE – VSOURCE) VCC(SENSE) – VSENSE = 0V, VGATE – VSOURCE > VGSPGH 7 mV ÄVRSENSE Shorted RSENSE Threshold Voltage (VVCCSENSE – VSENSE) VSENSE – VSOURCE = 30mV, VGATE – VSOURCE > VGSPGH 12 mV VDISCH DISCH Pin Drive Voltage IDISCH = 12mA 0.4 V IDISCH DISCH Pin Drive Current VDISCH = 2.5V -400 ìA VISS(LIN) Linear Sensing Range VVCC(SENSE) - VSENSE 0 90 mV VISS(Q) Zero Voltage VISS Output Voltage VVCC(SENSE) - VSENSE = 0mV 7 55 103 mV RVISS VISS DC Output Resistance [VISS(20ìA) -VISS(10ìA) ]/10ìA 100 kÙ VISS(SENS) VISS Analog Signal Sensitivity ÄVVISS/Ä( VVCC(SENSE) - VSENSE) 28 30 32 V/V ETOT VISS Total Error % (240 VA) VVCC(SENSE) - VSENSE = 60mV ±10 %