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LTC1504ACS8-3.3 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1504ACS8-3.3 Datasheet(HTML) 3 Page - Linear Technology |
3 / 12 page 3 LTC1504A ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 3: This parameter is guaranteed by correlation and is not tested directly. Note 4: LTC1504A quiescent current is dominated by the gate drive current drawn by the onboard power switches. With FB or SENSE pulled to VCC the output stage will stop switching and the static quiescent current can be observed. With FB or SENSE hooked up normally, the output stage will be switching and total dynamic supply current can be measured. Note 5: Fixed output parts will appear to have gmV and AV values 2.6 times lower than the specified values, due to the internal divider resistors. Note 6: The ILIM amplifier can sink but not source current. Under normal (not current limited) operation, the ILIM output current will be zero. Note 7: Contact factory for guaranteed specifications at 2.7V supply. TYPICAL PERFORMANCE CHARACTERISTICS TEMPERATURE ( °C) –50 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 25 75 1504A • TPC03 –25 0 50 100 125 VCC = 10V VCC = 5V VCC = 3.3V Switch On-Resistance vs Temperature Supply Current vs Supply Voltage SUPPLY VOLTAGE (V) 2.5 1504A • TPC01 5 7.5 10 14 12 10 8 6 4 2 0 VFB = VOUT VFB = VCC TA = 25°C IOUT = 0 Current Limit Threshold vs RIMAX RIMAX (Ω) 10k 700 600 500 400 300 200 100 0 100k 1504A • TPC04 TA = 25°C VCC = 5V TEMPERATURE ( °C) –50 –25 0 25 50 75 100 125 10 1 0.1 1504A • TPC02 VFB = VOUT VFB = VCC VCC = 5V IOUT = 0 Supply Current vs Temperature Shutdown Threshold vs Supply Voltage SUPPLY VOLTAGE (V) 35 7 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 10 1504A • TPC07 Current Limit Threshold vs Temperature TEMPERATURE ( °C) –50 –25 0 25 50 75 1504A • TPC05 125 500 450 400 350 300 250 200 150 100 50 0 100 VCC = 5V RIMAX = 47k RIMAX = 22k SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ISS Soft Start Source Current VSS = 0V, Commercial q –8 –12 –16 µA VSS = 0V, Industrial q –8 –12 –17 µA tr, tf Output Switch Rise/Fall Time 10% to 90% Ouput Swing q 550 ns DCMAX Maximum Duty Cycle VCOMP = VCC q 100 % VCC = 5V, TA = 25°C unless otherwise specified. (Note 2) |
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Similar Description - LTC1504ACS8-3.3 |
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