LT6658BHMSE-5#TRPBF

Overview

The LT6658BHMSE-5#TRPBF is a precision dual output voltage reference from Analog Devices, housed in a 16-lead MSOP package. It provides a fixed 5V output with an initial accuracy of ±0.1% and a temperature coefficient of 20ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and supports a maximum input voltage of 36V. Key electrical characteristics include a typical supply current of 1.9mA at no load, a maximum shutdown current of 3mA, and a maximum shunt current of 3mA.

Feature Summary

• Combines the performance of a precision voltage reference and a linear regulator for driving high-resolution ADCs and DACs under heavy loading.
• Features two independent outputs that track each other over temperature and load variations, utilizing Kelvin sense connections for precise regulation.
• Includes separate supply pins for each output to allow power consumption reduction and buffer amplifier isolation.
• Incorporates thermal shutdown protection and short-circuit prevention mechanisms.

Applications

• Microcontroller or FPGA systems integrated with ADC/DAC components
• Precision data acquisition systems
• Automotive control and monitoring circuits

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the B-grade specifications match your design requirements for accuracy and drift. Ensure the MSOP-16 footprint aligns with your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this part when a stable 5V reference is needed alongside a regulated supply for supporting circuitry. The dual-output architecture simplifies designs requiring simultaneous precision referencing and low-noise power delivery. Consider the thermal management capabilities of the exposed pad package for high-current applications.

Part Context

This component belongs to the LT6658 family of Refulator devices, which merge reference and regulator functions. The 'H' grade denotes operation up to 125°C, while 'B' specifies the 20ppm/°C temperature coefficient tier. The 'MSE' identifier confirms the 16-lead MSOP package type used for surface mount assembly.

Replacement Considerations

LT6658BIMSE-5#TRPBF (I-Grade, -40°C to 85°C)

FAQ

What is the function of the OD pin?

The OD pin serves as a logic input to disable the device, reducing supply current significantly when the reference is not in use.

How does the LT6658 handle heavy loads on its outputs?

It utilizes internal buffer amplifiers capable of sourcing up to 150mA on Output 1 and 50mA on Output 2, maintaining regulation even under heavy loading conditions.