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LM234Z-6 3 Pin Transistor 3-Terminal Adjustable Current Sources

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LM234Z-6 3 Pin Transistor 3-Terminal Adjustable Current Sources

Brand Name NSC
Model Number LM234Z-6
Certification Original Factory Pack
Place of Origin Original
Minimum Order Quantity 20pcs
Price Negotiation
Payment Terms T/T, Western Union,PayPal
Supply Ability 5200PCS
Delivery Time 1 Day
Packaging Details please contact me for details
Description Current Source Regulator Adjustable TO-92-3
V+ to V− Reverse Voltage 20V
R Pin to V− Voltage 5V
Set Current 10 mA
Power Dissipation 400 mW
ESD Susceptibility (Note 6) 2000VC
Detailed Product Description

3-Terminal Adjustable Current Sources


Features

► Operates from 1V to 40V

► 0.02%/V current regulation

► Programmable from 1µA to 10mA

► True 2-terminal operation

► Available as fully specified temperature sensor

► ±3% initial accuracy

 

General Description

The LM134/LM234/LM334 are 3-terminal adjustable current sources featuring 10,000:1 range in operating current, excellent current regulation and a wide dynamic voltage range of 1V to 40V. Current is established with one external resistor and no other parts are required. Initial current accuracy is ±3%. The LM134/LM234/LM334 are true floating current sources with no separate power supply connections. In addition, reverse applied voltages of up to 20V will draw only a few dozen microamperes of current, allowing the devices to act as both a rectifier and current source in AC applications

 

The sense voltage used to establish operating current in the LM134 is 64mV at 25˚C and is directly proportional to absolute temperature (˚K). The simplest one external resistor connection, then, generates a current with ≈+0.33%/˚C temperature dependence. Zero drift operation can be obtained by adding one extra resistor and a diode.

 

Applications for the current sources include bias networks, surge protection, low power reference, ramp generation,LED driver, and temperature sensing. The LM234-3 and LM234-6 are specified as true temperature sensors with guaranteed initial accuracy of ±3˚C and ±6˚C, respectively. These devices are ideal in remote sense applications because series resistance in long wire runs does not affect accuracy. In addition, only 2 wires are required.

 

The LM134 is guaranteed over a temperature range of −55˚C to +125˚C, the LM234 from −25˚C to +100˚C and the LM334 from 0˚C to +70˚C. These devices are available in TO-46 hermetic, TO-92 and SO-8 plastic packages.

 

Absolute Maximum Ratings

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

V+ to V− Forward Voltage

LM134/LM234/LM334

LM234-3/LM234-6

 

40V

30V

V+ to V− Reverse Voltage  20V
R Pin to V− Voltage  5V
Set Current 10 mA
Power Dissipation 400 mW
ESD Susceptibility (Note 6)2000V

Operating Temperature Range (Note 5)

LM134 

 

−55˚C to +125˚C

Soldering Information260˚C

 

Typical Performance Characteristics

 

Product Tags: multi emitter transistor   silicon power transistors  
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