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LTC4240IGN Datasheet(PDF) 3 Page - Linear Technology |
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LTC4240IGN Datasheet(HTML) 3 Page - Linear Technology |
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3 / 28 page  LTC4240 3 4240f 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. ELECTRICAL CHARACTERISTICS 5VIN – 0.4 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ∆V12V 12V Switch Voltage Drop ∆V12V = (V12VIN – V12VOUT), I = 500mA q 300 600 mV ∆VVEE VEE Switch Voltage Drop ∆VVEE = (VEEOUT – VEEIN), I = 100mA q 125 250 mV ICL Current Foldback 12VIN = 12V, 12VOUT = 0V q – 50 –350 – 800 mA VEEIN = –12V, VEEOUT = 0V q 50 250 350 mA ITH Current Fault Threshold 12VIN = 12V q –550 – 1250 – 1900 mA VEEIN = –12V q 225 500 800 mA TTS Thermal Shutdown Temperature Note 4 150 °C VTH Power Good Threshold Voltage 12VOUT q 10.8 11.1 11.4 V 5VOUT q 4.50 4.65 4.75 V 3VOUT q 2.8 2.9 3.0 V VEEOUT q – 10 – 10.5 – 10.8 V VIL Input Low Voltage OFF/ON, RESETIN, SCL, SDA, PRSNT1#, PRSNT2# q 0.8 V VIH Input High Voltage OFF/ON, RESETIN, SCL, SDA, PRSNT1#, PRSNT2# q 2V IIN Input Current PRSNT1#, PRSNT2#, OFF/ON = RESETIN = SDA = SCL = 0V, 5V, q ±0.08 ±2 µA OFF/ON, RESETIN, SDA, SCL PRSNT1#, PRSNT2# = 0V, 5V q ±0.08 ±2 µA RESETOUT, FAULT Leakage Current RESETOUT = FAULT = 12V, OFF/ON = 0V, RESETIN = 3.3V q ±0.08 ±2 µA PWRGD Leakage Current PWRGD = 12V, OFF/ON = 4V q ±0.08 ±2 µA 5VSENSE Input Current 5VSENSE = 5V, 5VOUT = 0V, GATE = 0V q 55 100 µA 3VSENSE Input Current 3VSENSE = 3.3V, 3VOUT = 0V, GATE = 0V q 55 100 µA 5VIN Input Current 5VIN = 5V, TIMER = 0V, OFF/ON = 0V q 0.8 1.5 mA 3VIN Input Current 3VIN = 3.3V, TIMER = Open q 250 600 µA 3VIN = 3.3V, TIMER = 0V q 250 500 µA 5VOUT Input Current 5VOUT = 5V, OFF/ON = 0V, TIMER = 0V, GATE = 0V q 237 400 µA 3VOUT Input Current 3VOUT = 3.3V, OFF/ON = 0V, TIMER = 0V, GATE = 0V q 120 200 µA VEEIN Input Current TIMER = 0V, OFF/ON = 0V q –950 –1200 µA Precharge Input Current VPRECHARGE = 1V q 10 µA ADDRIN ADDRIN = 0V, 5V q ±0.1 µA ITIMER TIMER Pin Current OFF/ON = 0V, TIMER = 0V q –6 – 11.5 –17 µA TIMER = 5V, OFF/ON = 2V q 15 28 55 mA VTIMER TIMER Threshold Voltages q 5 5.5 6.5 V RDIS 12VOUT Discharge Impedance q 430 1000 Ω 5VOUT Discharge Impedance q 50 100 Ω 3VOUT Discharge Impedance q 150 300 Ω VEEOUT Discharge Impedance q 650 1000 Ω VOH CMOS Output High Voltage BE, I = –100 µA q V VOL CMOS Output Low Voltage BE, I = 100 µA q 0.4 V Output Low Voltage PWRGD, RESETOUT, FAULT, SDA(I = 3mA) q 0.4 V Output Low Voltage LED (I = 10mA) q 0.8 V VPXG PRECHARGE Reference Voltage V5VIN = 5V q 0.9 1 1.1 V I2C Timing (Note 4) fSCL SCL Clock Frequency 100 kHz tSUSTA Start Condition Setup Time 4.7 µs tBUF Bus Free Time Between Stop and Start 4.7 µs tHDSTA Start Condition Hold Time 4 µs |
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