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LTC1255I Datasheet(PDF) 3 Page - Linear Technology |
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LTC1255I Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LTC1255 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tON Turn-ON Time VS = 10V, CGATE = 1000pF (Note 3) Time for VGATE > VS + 2V 30 100 300 µs Time for VGATE > VS + 5V 75 250 750 µs VS = 18V, CGATE = 1000pF (Note 3) Time for VGATE > VS + 5V 40 120 400 µs Time for VGATE > VS + 10V 75 250 750 µs VS = 24V, CGATE = 1000pF (Note 3) Time for VGATE > VS + 10V 50 180 500 µs tOFF Turn-OFF Time VS = 10V, CGATE = 1000pF, (Note 3, 4) 10 24 60 µs VS = 18V, CGATE = 1000pF, (Note 3, 4) 10 21 60 µs VS = 24V, CGATE = 1000pF, (Note 3, 4) 10 19 60 µs tSC Short-Circuit Turn-OFF Time VS = 10V, CGATE = 1000pF, (Note 3, 4) 5 16 30 µs VS = 18V, CGATE = 1000pF, (Note 3, 4) 5 16 30 µs VS = 24V, CGATE = 1000pF, (Note 3, 4) 5 16 30 µs VS = 9V to 24V, TA = 25°C, unless otherwise noted. ELECTRICAL C C HARA TERISTICS The q denotes specifications which apply over the full operating temperature range. Note 1: Quiescent current OFF is for both channels in OFF condition. Note 2: Quiescent current ON is per driver and is measured independently. The gate voltage is clamped to 12V above the rail to simulate the effects of protection clamps connected across the GATE-SOURCE of the power MOSFET. Note 3: Zener diode clamps must be connected across the GATE-SOURCE of the power MOSFET to limit VGS. 1N5242A (through hole) or MMBZ5242A (surface mount) 12V Zener diodes are recommended. All Turn-ON and Turn-OFF tests are performed with a 12V Zener clamp in series with a small-signal diode connected between VS and the GATE output to simulate the effects of a 12V protection Zener clamp connected across the GATE-SOURCE of the power MOSFET. Note 4: Time for VGATE to drop below 1V. CC HARA TERISTICS A TYPICALPERFOR CE Standby Supply Current Gate Voltage Above Supply Supply Current per Driver (ON) SUPPLY VOLTAGE (V) 0 0 4 6 8 10 12 14 5 10 15 20 LTC1255 • TPC03 25 16 18 20 2 30 VCLAMP = 12V SUPPLY VOLTAGE (V) 0 0 0.4 0.6 0.8 1.0 1.2 1.4 5 10 15 20 LTC1255 • TPC02 25 1.6 1.8 2.0 0.2 30 ONE INPUT = 0N OTHER INPUT = OFF TA = 25°C SUPPLY VOLTAGE (V) 0 0 10 15 20 25 30 35 5 10 15 20 LTC1255 • TPC01 25 40 45 50 5 30 VIN1 = VIN2 = 0V TA = 25°C |
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