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2022-09-19 17:33:03
LM134 LM234 LM334 Type three end -of -end adjustable current source
General description
lm134 /LM234/LM334 is a three -ends adjustable current with 10000 : 1 working current range, excellent current adjustment and wide dynamic voltage voltage voltage The range of the range is 1V to 40V. The current is determined by an external resistor that does not require other components. The initial current accuracy is 3%. LM134/LM234/LM334 is a real floating current without a single power connection. In addition, the reverse application voltage of the Gundam 20V will only generate dozens of micro -security currents. Allowing the device is both a rectifier and a current source in the communication application. It is 64 millivol to be used at LM134 at 25 degrees Celsius, which is directly proportional to the absolute temperature (degrees Celsius). The easiest external resistance and then connect to the temperature -related current ≈+0.33%/℃. You can perform a zero drift operation and add a resistor and a diode. The application of the current source includes bias networks, surge protection, low power benchmarks, rals generated, LED drives and temperature sensing. LM234-3 and LM234-6 are specified as real temperature sensors to ensure the initial accuracy of the initial accuracy is ± 3 ° C and ± 6 ° C, respectively. These devices are ideal in remote applications, because the series resistance in the long line does not affect the communication accuracy. In addition, only 2 wires are needed. The guarantee temperature range of LM134 is -55 degrees Celsius to +125 degrees Celsius, LM234 from -25 degrees Celsius to +100 degrees Celsius, and LM334 from 0 degrees Celsius to +70 degrees Celsius. These devices are sealed in TO-46, to-92 and SO-8 plastic packaging.
Features
From 1V to 40V
0.02%/V current adjustment
From 1 Wei'an to 10 mAh programming
[[ 123] Real double -end operation
as a completely specified temperature sensor provides
± 3%initial accuracy
Absolute maximum rated value (Note 1)
] V+to V-forward voltage
LM134/LM234/LM334 40 volt
LM234-3/LM234-6 30V
V+to V-reverse Voltage 20V
R pins to V voltage 5V
Set current 10 mAh
Power consumption 400 MW
Static discharge sensitivity (Note 6) 2000V
Work temperature range (Note 5)LM134-55 degrees Celsius to +125 degrees Celsius
LM234/LM234-3/LM234-6 #
8722 8722
; 25 ° C to+100 ° CLM334 0 degrees Celsius to +70 degrees Celsius
Welding informationto-92 packaging (10 seconds) 260 ℉
to -46 packaging (10 seconds)
300
℉ SO packageQi phase (60 seconds) 215 ℉
Infrared (15 seconds) 220 degrees Celsius
see an-450 surface installation method method And its influence
Product reliability "(Appendix D)