LT6658BIMSE-2.5#PBF

Overview

The LT6658BIMSE-2.5#PBF is a precision dual output voltage reference from Analog Devices, operating within the -40°C to +85°C temperature range. 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 separate supply pins for each output, allowing independent configuration up to 6V via external resistors. Output 1 supports sourcing up to 150mA and sinking 20mA, while Output 2 supports sourcing 50mA and sinking 20mA. It utilizes Kelvin sense connections for high load regulation and includes thermal shutdown protection.

Feature Summary

• Combines low drift precision reference performance with linear regulator capabilities
• Features two outputs that track each other over temperature and load variations
• Includes separate supply pins to isolate buffer amplifiers and reduce power consumption
• Provides thermal shutdown and short circuit protection for system reliability

Applications

• Driving precision reference inputs of high resolution ADCs and DACs under heavy loading
• Powering microcontrollers and supporting circuitry simultaneously with reference signals
• Dual output tracking reference systems requiring matched voltage rails
• Microcontroller or FPGA applications integrated with ADC/DAC subsystems

Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance when ordering. Confirm the BIMSE designation corresponds to the I-grade (-40°C to 85°C) and MSOP-16 package. Ensure VIN requirements meet the minimum dropout voltage specifications for the intended load conditions. Check for availability of development kits like DC2432A for evaluation purposes.

Selection Notes

Select this component when dual tracked outputs are required for simultaneous analog and digital power needs. The B-grade offers ±0.1% accuracy suitable for general precision applications. Consider the A-grade if tighter ±0.05% accuracy is necessary. Evaluate thermal management requirements given the exposed pad design in the MSOP package.

Part Context

This part belongs to the LT6658 family of Refulator devices, which merge reference and regulator functions. The BIMSE variant specifically denotes the industrial temperature grade and MSOP packaging. Other variants include H-grade for extended temperatures and IDE packages for DFN options. The family supports various fixed voltages and adjustable configurations up to 6V.

Replacement Considerations

LT6658AIMSE-2.5#PBF offers higher accuracy (±0.05%) and lower drift (10ppm/°C) in the same package.