LM134 MDC

Current Regulation/Management Overview

The LM134MDC is a three-terminal adjustable current source manufactured by Texas Instruments. It operates within a voltage range of 1V to 40V and supports programmable currents from 1µA to 10mA. The device features an initial accuracy of ±3% and a current regulation of 0.02%/V. It utilizes an external resistor for current setting, with a control pin voltage of 64mV at +25°C that is directly proportional to absolute temperature.

Current Regulation/Management Feature Summary

• Three-terminal adjustable current source architecture
• Wide dynamic operating voltage range
• Temperature-proportional control pin characteristic

Current Regulation/Management Applications

• Constant current diode replacement
• Temperature sensing circuits
• Battery chargers

Current Regulation/Management Procurement Notes

Verify the specific suffix 'MDC' against official Texas Instruments documentation to confirm package type and temperature grade. Ensure compatibility with required current ranges and voltage specifications before procurement. Cross-reference datasheet revisions for any changes in electrical characteristics or mechanical dimensions.

Current Regulation/Management Selection Notes

Select this component when a precise, adjustable constant current source is required over a wide voltage range. Consider the ±3% initial accuracy and 0.02%/V regulation for precision applications. Evaluate thermal management needs due to power dissipation across the device during operation.

Current Regulation/Management Part Context

The LM134 belongs to the LM134/LM234/LM334 family of three-terminal adjustable current sources. These devices are characterized by excellent current regulation and a wide dynamic voltage range. They are commonly used in applications requiring stable current sources independent of supply voltage variations.

Current Regulation/Management Replacement Considerations

LM234 and LM334 variants offer similar functionality with different temperature grades. Verify pinout compatibility and electrical parameter overlaps before substitution.