LTC1642C LINER [Linear Technology], LTC1642C Datasheet
LTC1642C
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LTC1642C Summary of contents
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FEATURES Single Channel Positive NFET Driver Programmable Undervoltage and Overvoltage Protection Foldback Current Limit Adjustable Current Limit Time-Out Latch Off or Automatic Retry on Current Fault Driver for SCR Crowbar on Overvoltage Programmable Reset Timer Reference Output with Uncommitted Comparator ...
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... CC SENSE Pin ................................... – 0. GATE Pin ...................................................– 0.3V to 27V All Other Pins ..........................................– 0.3V to 16.5V Operating Temperature Range LTC1642C ............................................... LTC1642I ............................................ – Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C DC ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are unless otherwise specified ...
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DC ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are unless otherwise specified. CC SYMBOL PARAMETER V Circuit Breaker Trip Voltage CB I GATE Pin Output Current ...
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LTC1642 CTIO S ON (Pin 4): Control. When ON is low the GATE pin is grounded and FAULT goes high. The GATE pin voltage starts ramping up one RST TMR timing cycle after ON goes ...
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U U APPLICATIO S I FOR ATIO Hot Circuit Insertion When a circuit board is inserted into a live backplane its supply bypass capacitors can draw large currents from the backplane power bus as they charge. These currents can permanently ...
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LTC1642 U U APPLICATIO S I FOR ATIO up; this “foldback” limiting tends to keep the power dissipation in the N-channel pass transistor constant. The output voltage is sensed at the FB pin. The limiting sense resistor voltage is 23mV ...
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U U APPLICATIO S I FOR ATIO Automatic Restart After a Current Fault The LTC1642 will automatically attempt to restart itself after the circuit breaker opens if the FAULT output is tied to the ON pin. The circuit is shown ...
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LTC1642 U U APPLICATIO S I FOR ATIO Overvoltage Protection The LTC1642 can protect a load from overvoltages by turning off the pass transistor if the supply voltage ex- ceeds a programmable limit, and by triggering a crowbar SCR if ...
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U U APPLICATIO S I FOR ATIO goes low at time 7, and GATE begins charging at time 8, one RST TMR cycle after FAULT goes high. Figure 10 shows typical waveforms when the OV divider is driven from the ...
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LTC1642 U U APPLICATIO S I FOR ATIO Undervoltage Monitor The LTC1642 will assert RESET if a monitored voltage falls below a programmable minimum. When the monitored voltage has exceeded its minimum for at least one system timing cycle, RESET ...
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PACKAGE DESCRIPTIO 0.007 – 0.0098 (0.178 – 0.249) 0.016 – 0.050 (0.406 – 1.270) * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL ...
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LTC1642 U TYPICAL APPLICATIO R10 + 15 F 12k 10V C9 KEMET 270pF TANT C14 C7 2200pF 0 36.5k 1% LATCH OFF: FLOAT FAULT C6 AUTOMATIC RETRY: TIE FAULT TO ...