LT1161 LINER [Linear Technology], LT1161 Datasheet
LT1161
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LT1161 Summary of contents
Page 1
... IRFZ34 Figure 1. Protected Quad High-Side Switch Quad Protected High-Side DESCRIPTION The LT1161 is a quad high-side gate driver allowing the use of low cost N-channel power MOSFETs for high-side switching applications. It has four independent switch channels, each containing a completely self-contained charge pump to fully enhance an N-channel MOSFET switch with no external components ...
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... Sense Voltages (Pins 13, 15, 17, 19).................. V Current (Any Pin).................................................. 50mA Operating Temperature Range LT1161C ............................................... LT1161I ............................................ – Junction Temperature Range (Note 1) LT1161C .............................................. 125 C LT1161I ......................................... – 150 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER I ...
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... TEMPERATURE (°C) 1161 G05 Turn-OFF Time Driving MOSFET 100 IRFZ34 NORMAL CURRENT LIMIT INPUT VOLTAGE (V) 1161 G08 LT1161 MOSFET Gate Drive Current 100 + V 24V 12V + 0 GATE VOLTAGE ABOVE V ...
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... FUNCTIONS Supply Pins: The two supply pins are internally connected and must also be externally connected. In addition to providing the operating current for the LT1161, the supply pins also serve as the Kelvin connection for the current sense comparators. The supply pins must be connected to the positive side of the drain sense resistors for proper operation of the current sense ...
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... U OPERATIO (Each Channel, Refer to Functional Diagram) The LT1161 gate pin has two states, OFF and ON. In the OFF state it is held low, while in the ON state it is pumped to 12V above supply by a self-contained 750kHz charge pump. The OFF state is activated when either the input pin is below 1 ...
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... Figure 4 shows the proper drain sense configuration for the LT1161. Note that the sense pin goes to the drain end of the sense resistor, while the two V other and connected to supply at the same point as the positive ends of the sense resistors ...
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... The sheet resistance of 1oz. copper clad is approximately from being exceeded. – +0.39%/ C. Since the LT1161 drain sense threshold has a similar temperature coefficient (+0.33%/ C), this offers 24V the possibility of nearly zero TC current sensing using + “free” drain sense resistors made out of PC trace material. ...
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... V pins. However, when this voltage is exceeded, even for a few microseconds, the result can be a catastrophic failure. For this reason it is imperative that the LT1161 not be exposed to supply transients above 60V . For proper current-sense operation, the V quired to be connected to the positive side of the drain sense resistors (see Drain Sense Configuration) ...
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... The channel 2 circuit of Figure 9b uses an operational amplifier (must common mode to ground) to level shift the voltage across R proach allows the use of a much smaller sense resistor which could be made from PC trace material. In both cases, the LT1161 restart timers function the same as in high-side switch applications ...
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... GND V 10k 30V 5.1k 1N6011B GND V MTP36N06E DS1 3 18 IN1 G1 MTP36N06E DS2 5 16 1N4148 IN2 G2 LT1161 DS3 IN3 1N4744 T4 DS4 2N2222 1N4148 9 12 IN4 GND V 51 1N4744 2N2222 8V TO 28V OPERATING 32V TO 60V SHUTDOWN + 10 F 0.03 ...
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... DS2 5 16 IN2 G2 LT1161 + DS3 7 14 IN3 DS4 9 12 IN4 GND V MM74HC266A 5.1k 0 LT1161 24V + 50 F 0.015 50V RFD16N05 LOAD 0.015 #1 100k RFD16N05 LOAD #2 0.015 100k RFD16N05 LOAD #3 0.015 100k RFD16N05 LOAD #4 100k 1161 TA02 11 ...
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... LT1161 PACKAGE DESCRIPTION 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.025 0.325 –0.015 +0.635 8.255 –0.381 0.291 – 0.299 (7.391 – 7.595) (NOTE 2) 0.005 0.010 – 0.029 (0.127) (0.254 – 0.737) RAD MIN 0.009 – 0.013 (0.229 – ...