LT6658AHDE-5#TRPBF

Overview

The LT6658AHDE-5#TRPBF is a precision dual output voltage reference and regulator from Analog Devices, housed in a 16-lead (4mm × 3mm) plastic DFN package with an exposed thermal pad. It provides two independent outputs: Output 1 supports up to 150mA sourcing and 20mA sinking, while Output 2 supports up to 50mA sourcing and 20mA sinking. The device features a fixed 5V output with A-grade accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. It operates over a junction temperature range of –40°C to 125°C with a wide input voltage range up to 36V.

Feature Summary

• Combines precision voltage reference performance with linear regulator capabilities for high-current driving
• Features Kelvin sense connections on both outputs to achieve ultra-low load regulation
• Includes separate supply pins for each output to allow power consumption reduction and buffer isolation
• Offers integrated thermal shutdown and short-circuit protection for robust operation

Applications

• Microcontroller or FPGA systems requiring dedicated ADC/DAC references
• High-performance data acquisition systems
• Automotive control and monitoring circuits
• Precision instrumentation and process control equipment

Procurement Notes

Verify the specific suffix 'AHDE' corresponds to the H-grade temperature range (-40°C to 125°C), DFN package, and 5V fixed output configuration. Confirm RoHS compliance via the '#PBF' designation. Ensure the ordering part number matches the exact grade and package variant required for your design specifications before procurement.

Selection Notes

Select this component when high current drive capability is required alongside low noise and high accuracy. The AHDE variant is suitable for applications demanding extended industrial temperature ranges. Consider the separate VIN1/VIN2 pins if independent power domain isolation between the two outputs is necessary to minimize cross-talk or optimize efficiency.

Part Context

This part belongs to the LT6658 family of Refulators™, which merge reference and regulator functions. The AHDE suffix indicates the H-grade temperature rating and the DE package style. Other variants exist with different output voltages (1.2V, 1.8V, 2.5V, 3V, 3.3V) and grades (A or B).

Replacement Considerations

LT6658BHDE-5#TRPBF (B-grade, lower accuracy)

FAQ

Can the output voltage be adjusted?

Yes, although the AHDE-5 has a fixed internal setting, the datasheet notes that outputs can be configured with external resistors to give an output voltage up to 6V.

What is the purpose of the OD pin?

The OD pin allows for output disable functionality. Driving it low disables the outputs to reduce power consumption.