LT3092MPST

Current Regulation/Management Overview

The LT3092MPST is a programmable two-terminal current source manufactured by Analog Devices Inc. It delivers a maximum output current of 200mA, adjustable via two external resistors to values between 0.5mA and 200mA. The device operates within a junction temperature range of -55°C to 125°C and features a typical supply current of 300µA. Packaged in an SOT-223-3 surface-mount case, it integrates reverse input protection, reverse current protection, thermal protection, and current limiting capabilities.

Current Regulation/Management Feature Summary

• Programmable two-terminal architecture requiring only two resistors for current setting
• Integrated reverse input and reverse current protection without flow
• Built-in thermal protection and current limiting mechanisms

Current Regulation/Management Applications

• Remote temperature sensing circuits
• LED driver biasing
• Precision current reference generation

Current Regulation/Management Procurement Notes

Verify the specific suffix (e.g., TRPBF vs PBF) against the required reel or tube packaging configuration. Confirm that the SOT-223-3 package dimensions match the target PCB footprint. Ensure the operating temperature range meets the environmental requirements of the final assembly. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and availability status before ordering.

Current Regulation/Management Selection Notes

Select this component when a simple, low-component-count current source is required. It is suitable for applications needing precise current regulation without complex control loops. Consider the 200mA limit and SOT-223 thermal dissipation characteristics. Verify compatibility with the intended voltage headroom and resistor tolerance requirements for the desired current accuracy.

Current Regulation/Management Part Context

This part belongs to the LT3092 family of programmable current sources from Analog Devices. It shares architectural similarities with other precision current regulators but is distinct in its two-terminal operation mode. The MPST designation indicates a military-grade or high-reliability variant within the broader product line, offering enhanced performance specifications compared to standard commercial grades.

Current Regulation/Management Replacement Considerations

Direct substitutes include other LT3092 variants such as LT3092EMPST#TRPBF for different temperature grades. Check pinout compatibility with existing designs. Ensure replacement parts maintain the same 200mA current capability and SOT-223-3 package form factor to avoid board modifications.