LT6658BHMSE-2.5#TRPBF

Overview

The LT6658BHMSE-2.5#TRPBF is a precision dual output voltage reference and supply from Analog Devices, operating within the H-grade temperature range of -40°C to +125°C. It provides a fixed 2.5V output with an initial accuracy of ±0.1% and a maximum temperature coefficient of 20ppm/°C. The device features Output 1 capable of sourcing up to 150mA and sinking 20mA, while Output 2 sources up to 50mA and sinks 20mA. It operates with input voltages up to 36V and utilizes a 16-lead MSOP package.

Feature Summary

• Combines low drift precision reference performance with linear regulator capabilities for simultaneous high-current drive
• Features separate Kelvin sense connections on outputs to minimize load regulation error under heavy loading conditions
• Includes dedicated bypass and noise reduction pins to allow band-limiting and lowering of total integrated noise

Applications

• Microcontroller or FPGA systems requiring integrated ADC/DAC reference supplies
• Data acquisition systems demanding high precision tracking references
• Automotive control and monitoring circuits
• Precision instrumentation and process control equipment

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the B-grade designation matches the required ±0.1% accuracy and 20ppm/°C drift specifications. Ensure the H-grade thermal rating aligns with the intended operating environment limits. Cross-reference the manufacturer part number against official distributor catalogs to confirm current availability status.

Selection Notes

Select this component when applications require both a stable reference voltage and a regulated supply rail from a single IC. The dual-output architecture allows independent power delivery to sensitive analog inputs and digital logic. Consider the exposed pad requirement for thermal management in dense PCB layouts. Evaluate the need for external noise reduction capacitors based on system sensitivity requirements.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge voltage reference and linear regulator technologies. The B-grade variant offers relaxed accuracy compared to A-grade parts but maintains robust performance. The MSE package provides a compact footprint suitable for space-constrained designs while offering adequate thermal dissipation through the exposed ground pad.

Replacement Considerations

LT6658AIMSE-2.5#TRPBF (A-grade, tighter specs)

FAQ

How does the LT6658 handle output short circuits?

The device includes internal protection mechanisms that limit output current during short circuit conditions to prevent thermal overstress, allowing indefinite short circuit duration without damage.

What is the purpose of the OD pin?

The OD pin serves as an output disable control. Driving this pin low disables the outputs to reduce power consumption, while driving it high enables normal operation.