LT6658BIDE-5#TRPBF

Overview

The LT6658BIDE-5#TRPBF is a precision dual output voltage reference and regulator in a 16-lead DFN package. It provides two independent outputs with a fixed nominal voltage of 5V. Output 1 supports sourcing up to 150mA and sinking up to 20mA, while Output 2 supports sourcing up to 50mA and sinking up to 20mA. The device features an initial accuracy of ±0.1% and a maximum temperature coefficient of 20ppm/°C. It operates within a junction temperature range of –40°C to 85°C and accepts input voltages up to 36V.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations.
• Kelvin sense connections enable extremely low load regulation for high-resolution ADC and DAC driving applications.
• Separate supply pins allow for power consumption reduction and isolation between buffer amplifiers.
• Integrated thermal shutdown and short-circuit protection prevent thermal overstress during fault conditions.

Applications

• Dual output tracking reference systems
• Microcontroller or FPGA designs incorporating ADC/DAC interfaces
• Precision data acquisition systems
• Automotive control and monitoring circuits

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 IDE suffix corresponds to the 16-lead DFN package format. Check RoHS compliance status if required by assembly standards.

Selection Notes

Select this part when dual isolated references are needed with high current capability. The B-grade offers cost-effective precision for general instrumentation. Consider the A-grade if tighter accuracy is required. Verify input voltage headroom meets dropout requirements for both outputs under full load conditions.

Part Context

This component belongs to the LT6658 family of Refulator devices combining reference and linear regulator functions. It is available in MSOP and DFN packages with various voltage options including 1.2V, 1.8V, 2.5V, 3V, 3.3V, and 5V. Grades A and B define accuracy tiers, while I and H denote operating temperature ranges.

Replacement Considerations

LT6658BIDE-5#PBF (Tube version)

FAQ

What is the difference between VIN, VIN1, and VIN2 pins?

VIN is the main supply input. VIN1 and VIN2 are separate supply pins for Output 1 and Output 2 respectively, allowing independent power management and isolation of the internal buffer amplifiers.

How does the Kelvin connection improve performance?

The Kelvin sense pins (VOUT_S) connect directly to the output stage, minimizing errors caused by PCB trace resistance and ensuring precise load regulation even at high currents.