LT6658BHMSE-3.3#TRPBF

Overview

The LT6658BHMSE-3.3#TRPBF is a precision dual output voltage reference from Analog Devices, packaged in a 16-lead MSOP with an exposed thermal pad. It provides a fixed 3.3V output on both channels, featuring B-grade accuracy of ±0.1% and a temperature coefficient of 20ppm/°C. The device supports a wide operating input voltage range up to 36V and operates within a junction temperature range of -40°C to 125°C. Output 1 delivers up to 150mA sourcing current, while Output 2 provides up to 50mA. Both outputs utilize Kelvin sense connections for high load regulation.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations.
• Kelvin sense connection capability enables extremely low load regulation by minimizing trace resistance effects.
• Separate supply pins (VIN1, VIN2) allow for power consumption reduction and buffer amplifier isolation.
• Integrated thermal shutdown and short-circuit protection prevent damage during thermal overstress or fault conditions.

Applications

• Microcontroller or FPGA systems requiring stable reference voltages for integrated ADC/DAC modules
• High-resolution data acquisition systems demanding low noise and high accuracy
• Automotive control and monitoring circuits requiring robust performance across wide temperature ranges

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the B-grade designation matches the required ±0.1% initial accuracy and 20ppm/°C drift specifications. Ensure the MSOP-16 package with exposed pad aligns with the PCB footprint and thermal management requirements of the target design.

Selection Notes

Select this component when dual isolated references are needed from a single package to save board space. The B-grade offers a balance of cost and precision suitable for general industrial applications. Consider the H-grade if operation above 85°C is required, as the B-grade is specified up to 125°C but may have different availability or pricing tiers not listed here.

Part Context

This part belongs to the LT6658 family of Refulators, which combine voltage reference and linear regulator functions. The 'B' denotes the accuracy grade, 'H' indicates the extended temperature range, 'MSE' specifies the 16-lead MSOP package, and '3.3' sets the fixed output voltage. The '#TRPBF' suffix confirms the reel packaging and RoHS compliance.

Replacement Considerations

LT6658AIMSE-3.3#TRPBF (A-grade, higher accuracy)

FAQ

Can the output voltage be adjusted?

Yes, although this specific part is factory-set to 3.3V, the LT6658 family allows output voltages up to 6V when configured with external resistors.

What is the purpose of the OD pin?

The OD (Output Disable) pin allows the user to shut down the internal regulators to reduce power consumption when the outputs are not in use.