DC1555A Linear Technology, DC1555A Datasheet
DC1555A
Specifications of DC1555A
Related parts for DC1555A
DC1555A Summary of contents
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... A fault is indicated when the part is in shutdown or the input voltage is outside the UV and OV set points. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT SENSE trademarks are the property of their respective owners. ...
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LTC4365 ABSOLUTE MAXIMUM RATINGS Supply Voltage (Note 1) V .......................................................... –40V to 60V IN Input Voltages (Note 3) UV, SHDN .............................................. –0.3V to 60V OV ............................................................ –0. ....................................................... –0.3V to 40V OUT Output Voltages (Note 4) FAULT ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER OUT V Input Voltage Range IN I Input Supply Current VIN I Reverse Input Supply Current VIN(R) V Input Supply Undervoltage Lockout IN(UVLO ...
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LTC4365 TYPICAL PERFORMANCE CHARACTERISTICS V Operating Current vs IN Temperature 100 SHDN = 2. OUT 34V 12V 2. –50 – ...
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TYPICAL PERFORMANCE CHARACTERISTICS UV Threshold vs Temperature 507 12V IN OUT 505.0 502.5 500.0 497.5 495.0 492.5 –50 – 100 TEMPERATURE (°C) 4365 G10 UV/OV Propagation Delay vs Overdrive ...
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LTC4365 PIN FUNCTIONS Exposed Pad: Connect to device ground. FAULT: Fault Indication Output. This high voltage open drain output is pulled low below its monitor threshold above its monitor threshold, if SHDN is low, ...
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BLOCK DIAGRAM V IN –40V TO 60V LDO 6.5V INTERNAL V OUT 2.2V UVLO UV – + 25mV OV HYSTERESIS + – 0.5V REVERSE PROTECTION – + CLOSES SWITCH 5V INTERNAL WHEN V IS NEGATIVE SUPPLY IN SUPPLY GATE I ...
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LTC4365 OPERATION Many of today’s electronic systems get their power from external sources such as a wall wart adapter, batteries and custom power supplies. These power sources are often unreliable, wired incorrectly, out of spec, or just plain wrong. This ...
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APPLICATIONS INFORMATION Figure 2 highlights the dependence of the gate drive on V and V . When system power is first turned on (SHDN OUT low to high 0V), gate drive maximum for all OUT ...
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LTC4365 APPLICATIONS INFORMATION Figure 4 shows the timing associated with the UV pin. Once a UV fault propagates through the UV comparator ), the FAULT output is asserted low and a 50mA (t FAULT current sink discharges the GATE pin. ...
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APPLICATIONS INFORMATION The resistor values can then be solved: 3mV 1. R1 300k 10nA 3mV • • (3.5V – 0.5V) =1.8M 10nA The closest 1% value 1.82M: 300k +1.82M 3. R1 ...
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LTC4365 APPLICATIONS INFORMATION The trace the other hand, does not respond OUT to the negative voltage demonstrating the desired IN reverse supply protection. The waveforms of Figure 7 were captured using a 40V ...
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APPLICATIONS INFORMATION Select Between Two Input Supplies With the part in shutdown, the V IN driven by separate power supplies. The LTC4365 then automatically drives the GATE pin just below the lower of the two supplies, thus turning off the ...
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LTC4365 APPLICATIONS INFORMATION Transients During OV Fault The circuit of Figure 14 was used to display transients during an overvoltage condition. The nominal input supply is 24V and it has an overvoltage threshold of 30V. The parasitic inductance is that ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... V ≤ (0.9)( OUT IN ≤ 14V OUT ≤ 10V, 80μA Quiescent Current OUT ≤ 36V, 120μA Quiescent Current OUT 4V to 24V, 97% Duty Cycle, 4mm × 4mm IN LT 0910 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORA TION 2010 4365f ...