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LTC4240 Fiches technique(PDF) 2 Page - Linear Technology |
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LTC4240 Fiches technique(HTML) 2 Page - Linear Technology |
2 / 28 page LTC4240 2 4240f Supply Voltages 5VIN .................................................................... –0.3V to 12V 12VIN ................................................................. –0.3V to 14V VEEIN ................................................................... 0.3V to –14V Input Voltages PRSNT1#, PRSNT2#, SCL, RESETIN, OFF/ON .................................................. –0.3V to 12V 5VOUT, 5VSENSE, 3VIN, 3VSENSE, 3VOUT ............................ –0.3V to (5VIN + 0.3V) ADDRIN, PRECHARGE ......................... –0.3V to 5VIN Output Voltages TIMER, FAULT, PWRGD, SDA, RESETOUT, LED, DRIVE, GATE, 12VOUT ....................... –0.3V to 14V VEEOUT ................................................................ –14V to 0.3V BE ............................................. 0.3V to (5VIN + 0.3V) Operating Temperature Range LTC4240C ............................................... 0 °C to 70°C LTC4240I .............................................–40 °C to 85°C Storage Temperature Range .................... 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER TJMAX = 140°C, θJA = 135°C/W LTC4240CGN LTC4240IGN ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Notes 1, 2) ELECTRICAL CHARACTERISTICS Consult LTC Marketing for parts specified with wider operating temperature ranges. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW GN PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 PRSNT1# PRSNT2# 12VIN VEEIN TIMER 5VOUT FAULT PWRGD BE GND ADDRIN SDA SCL RESETOUT OFF/ON RESETIN 12VOUT VEEOUT 3VOUT 3VSENSE 3VIN 5VIN 5VSENSE GATE PRECHARGE DRIVE DGND LED SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IDD V12VIN Supply Current OFF/ON = 0V q 38 mA VLKO Undervoltage Lockout 12VIN q 7.00 8.00 10.80 V 5VIN q 4.10 4.3 4.45 V 3VIN q 2.35 2.45 2.55 V VEEIN q –9 –10.5 V VFB Foldback Current Limit Voltage VFB = (V5VIN – V5VSENSE), V5VOUT = 0V, TIMER = 0V q 15 25 35 mV VFB = (V5VIN – V5VSENSE), V5VOUT = 3V, TIMER = 0V q 55 70 85 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = 0V q 15 25 35 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 2V, TIMER = 0V q 55 65 80 mV VCB Circuit Breaker Trip Voltage VTV = (V5VIN – V5VSENSE), V5VOUT = 5V, TIMER = Open q 50 55 60 mV VTV = (V5VIN – V5VSENSE), V5VOUT = 0V, TIMER = Open q 611 16 mV VTV = (V3VIN – V3VSENSE), V3VOUT = 3.3V, TIMER = Open q 50 55 60 mV VTV = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = Open q 611 16 mV tOC Overcurrent Fault Response Time (V5VIN – V5VSENSE) = 100mV, TIMER = Open q 25 35 55 µs Overcurrent Fault Response Time (V3VIN – V3VSENSE) = 100mV, TIMER = Open q 25 35 55 µs tSC Short-Circuit Response Time (V5VIN – V5VSENSE) = 200mV, TIMER = Open q 25 35 55 µs (V3VIN – V3VSENSE) = 200mV, TIMER = Open q 25 35 55 µs IGATE(UP) GATE Pin Turn-On Current OFF/ON = 0V, VGATE = 0V, TIMER = 0V q – 20 – 65 –100 µA IGATE(DN) GATE Pin Turn-Off Current VGATE = 5V, (Note 3) q 100 200 300 µA IGATE(FAULT) GATE Pin Fault-Off Current OFF/ON = 0V, VGATE = 2V, TIMER = Open, FAULT = 0V q 2.5 6 8.5 mA ∆VGATE External Gate Voltage ∆VGATE = (V12VIN – VGATE), IGATE = 1µA q 600 1000 mV The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 12VIN = 12V, VEEIN = –12V, V3VIN = 3.3V, V5VIN = 5V unless otherwise noted. |
Numéro de pièce similaire - LTC4240 |
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Description similaire - LTC4240 |
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