LT6660HCDC-5

Overview

The LT6660HCDC-5 is a micropower series voltage reference from Analog Devices, housed in a compact 3-lead 2mm × 2mm × 0.75mm DFN package. It provides a fixed output voltage of 5V with an initial accuracy tolerance of ±0.2%. The device features a maximum temperature coefficient of 20ppm/°C and guarantees an output current capability of up to 20mA. Supply current for the 5V variant ranges from 160µA to 240µA. It operates within an input voltage range of VOUT + 0.9V to 20V, with absolute maximum ratings extending to 30V.

Feature Summary

• Curvature compensation technology ensures low temperature drift and high precision stability across operating conditions.
• Reverse-battery protection prevents reverse current conduction, enhancing circuit safety during abnormal power events.
• Elimination of required output capacitors reduces printed circuit board space requirements and supports fast settling times.
• Laser-trimmed thin-film resistors contribute to achieving high initial output accuracy without external calibration.

Applications

• Precision regulators
• A/D and D/A converters
• Handheld instruments
• Sensor modules

Procurement Notes

Verify that the specific part number matches the required voltage grade and accuracy class. Confirm the package marking code corresponds to the HC series specifications. Ensure ordering suffixes align with tape and reel or bulk packaging requirements. Check RoHS compliance status against project constraints. Validate supply voltage compatibility before integration.

Selection Notes

Select this component when small form factor and low quiescent current are critical design constraints. The 5V output option suits systems requiring standard logic levels or intermediate rail generation. Consider the thermal regulation effects if high load currents are sustained. Evaluate long-term drift characteristics for applications demanding extended measurement stability over time.

Part Context

This device belongs to the LT6660 family of tiny micropower precision series references. It serves as a space-saving alternative to larger packages like the LT1460 while maintaining comparable current capabilities. The family utilizes curvature compensation to achieve low drift, distinguishing it from standard bandgap references. It targets applications where board real estate is limited but precision remains essential.

Replacement Considerations

LT1460 is identified as a related part offering similar 20mA output current capabilities in different packaging options.