LT6660HCDC-3.3#TRMPBF

Overview

The LT6660HCDC-3.3#TRMPBF is a micropower series voltage reference from Analog Devices, housed in a compact 3-lead 2mm × 2mm DFN package. It provides a fixed output of 3.3V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 20ppm/°C. The device guarantees a sourcing output current of up to 20mA while maintaining excellent line regulation characteristics. Supply current for the 3.3V option ranges from 145µA to 220µA. It operates within an input voltage range of VOUT + 0.9V to 20V and requires no external output compensation capacitor.

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, saving board space and enabling fast settling times.
• Incorporates reverse-battery protection to prevent reverse current conduction.
• Offers significant power dissipation advantages over shunt references by reducing quiescent current when load demand is low.

Applications

• Handheld Instruments
• Precision Regulators
• A/D and D/A Converters
• Power Supplies
• Sensor Modules

Procurement Notes

Verify the specific suffix #TRMPBF indicates Lead Free Tape and Reel packaging. Confirm the HC grade corresponds to the 0.2% accuracy and 20ppm/°C temperature coefficient specifications. Ensure the operating environment stays within the specified 0°C to 70°C range for guaranteed electrical parameters. Check for any RoHS compliance documentation updates prior to final procurement.

Selection Notes

Select this component for applications requiring high accuracy in a minimal footprint where output capacitance must be minimized. The HC grade is suitable for systems demanding tight initial tolerance and low thermal drift. Consider the 20mA sourcing capability for driving moderate loads directly. Evaluate the supply current consumption against battery life requirements for portable designs.

Part Context

This part belongs to the LT6660 family of tiny micropower precision series references. The family includes various voltage options (2.5V, 3V, 3.3V, 5V, 10V) and accuracy grades (H, J, K). The DC package denotes the 3-lead 2mm × 2mm DFN form factor. This series serves as a space-saving alternative to larger packages like the LT1460.

Replacement Considerations

LT6660JCDC-3.3#TRMPBF offers 0.4% accuracy. LT6660KCDC-3.3#TRMPBF offers 0.5% accuracy. LT1460 is a larger package alternative with similar performance.