LT6660KCDC-3#TRPBF

Overview

The LT6660KCDC-3#TRPBF is a micropower series voltage reference from Analog Devices, housed in a 3-lead 2mm × 2mm × 0.75mm DFN package. It provides a fixed output voltage of 3V with an initial accuracy tolerance of ±0.5%. The device features a maximum temperature coefficient of 50ppm/°C and supports up to 20mA of output current. Supply current ranges from 145µA to 220µA depending on conditions. It operates within an input voltage range of VOUT + 0.9V to 20V and functions across a specified temperature range of 0°C to 70°C.

Feature Summary

• Curvature compensation combined with laser-trimmed thin-film resistors ensures high precision and low drift.
• Eliminates the need for an output compensation capacitor, reducing board space requirements.
• Incorporates reverse-battery protection to prevent reverse current conduction.
• Offers significant power dissipation advantages over shunt references by drawing minimal current when not sourcing load.

Applications

• Handheld Instruments
• Precision Regulators
• A/D and D/A Converters
• Power Supplies
• Hard Disk Drives

Procurement Notes

Verify the specific suffix #TRPBF indicates lead-free tape and reel packaging. Confirm the KCDC designation corresponds to the 3V output option with ±0.5% accuracy and 50ppm/°C temperature coefficient. Ensure the operating environment remains within the 0°C to 70°C specified range for guaranteed electrical characteristics. Check for any regional distribution restrictions or limited availability status before finalizing procurement plans.

Selection Notes

Select this component when a compact footprint is critical due to its 2mm × 2mm DFN size. Choose the KCDC variant if the design requires a 3V output with ±0.5% initial accuracy rather than higher precision grades. Consider the 50ppm/°C temperature coefficient against application thermal stability needs. Verify that the 0°C to 70°C operating range meets environmental specifications, as wider ranges require different part options.

Part Context

This part 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 output current capabilities. The family utilizes curvature compensation technology to achieve low temperature coefficients across various voltage options including 2.5V, 3V, 3.3V, 5V, and 10V.

Replacement Considerations

LT6660JCDC-3#TRPBF offers tighter accuracy (±0.4%) and lower drift (20ppm/°C). LT6660HCDC-3#TRPBF provides the highest precision (±0.2%, 20ppm/°C). For non-DFN packages, the LT1460 is a larger alternative with similar performance but different form factor.