LT6660HCDC-3.3#TRPBF

Overview

The LT6660HCDC-3.3#TRPBF is a micropower series voltage reference providing a fixed 3.3V output with 0.2% initial accuracy and a maximum temperature coefficient of 20ppm/°C. It operates within an input voltage range of VOUT + 0.9V to 20V, drawing a typical supply current of 180µA at 25°C. The device guarantees up to 20mA output current and features reverse-battery protection. Packaged in a compact 3-lead 2mm × 2mm DFN, it requires no output compensation capacitor.

Feature Summary

• Curvature compensation and laser-trimmed thin-film resistors ensure high precision and low drift.
• Eliminates the need for an output compensation capacitor, saving board space and enabling fast settling.
• Reverse-battery protection prevents reverse current conduction.
• Low IR reflow induced stress minimizes output voltage shift during soldering.

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 HC grade corresponds to the 0.2% accuracy and 20ppm/°C temperature coefficient specifications. Ensure the 3.3V output voltage option matches the design requirements. Check for any restricted material or RoHS compliance documentation if required by the target application standards.

Selection Notes

Select this component when space-constrained designs require a precision series reference without output capacitance. The HC grade offers the highest accuracy (0.2%) and lowest drift (20ppm/°C) in the family. Consider the 180µA typical supply current for battery life calculations. Ensure the input voltage remains between VOUT + 0.9V and 20V for proper regulation.

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. The family includes various voltage options (2.5V, 3V, 3.3V, 5V, 10V) and accuracy grades (HC, JC, KC). All variants share the same 3-lead 2mm × 2mm DFN package and core architecture.

Replacement Considerations

LT6660JCDC-3.3#TRPBF

FAQ

Does the LT6660HCDC-3.3#TRPBF require an output capacitor?

No, the LT6660 family is designed to be stable with a large range of capacitive loads and does not require an output compensation capacitor.

What is the minimum input-output voltage differential?

The dropout voltage is typically 0.9V at zero load current and increases to 1.3V–1.4V at higher load currents depending on the specific output voltage option.