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LM134 数据表(PDF) 1 Page - STMicroelectronics |
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LM134 数据表(HTML) 1 Page - STMicroelectronics |
1 / 10 page Z TO92 (Plastic Package) . OPERATES from 1V to 40V . 0.02% V CURRENT REGULATION . PROGRAMMABLE from 1 µA to 10mA .± 3% INITIAL ACCURACY DESCRIPTION The LM134/LM234/LM334 are 3-terminal adjust- able current sources characterized by : - an operating current range of 10000 : 1 - an excellent current regulation - a wide dynamic voltage range of 1V to 40V The current is determined by an external resistor without requiring other external components. Reverse voltages of up to 20V will only draw a cur- rent of several microamperes. This enables the circuit to operate as a rectifier and as a source of cur- rent in a.c. applications. For the LM134/LM234/LM334, the voltage on the control pin is 64mV at +25 oC and is directly propor- tional to the absolute temperature ( oK). The simplest external resistor connection generates a current with ≈ 0.33%/oC temperature dependence. Zero drift can be obtainedby adding an additionalresistor and a diode to the external circuit. PIN CONNECTIONS D SO8 (Plastic Micropackage) V + AD J V - 21 3 TO92 (Bottom view) LM134-LM234 LM334 THREE TERMINAL ADJUSTABLE CURRENT SOURCES 87 6 5 12 3 4 NC NC V NC - ADJ NC N C V+ SO8 (Top view) ORDER CODES Part Num- ber Temperature Range Package ZD LM134 –55 oC, +125oC •• LM234 –25 oC, +100oC •• LM334 0 oC, +70oC •• Example : LM134Z October 1997 1/10 |
类似零件编号 - LM134 |
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类似说明 - LM134 |
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