LT6660JCDC-2.5#TRPBF

Overview

The LT6660JCDC-2.5#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 2.5V with an initial accuracy tolerance of ±0.4%. The device operates within an input voltage range of VOUT + 0.9V to 20V and guarantees a maximum output current of 20mA. Key electrical specifications include a maximum temperature coefficient of 20ppm/°C over the 0°C to 70°C specified temperature range and a typical supply current of 180µA for the 2.5V variant.

Feature Summary

• Curvature compensation combined with laser-trimmed thin-film resistors ensures high precision and low drift.
• Eliminates the need for an external output compensation capacitor, reducing board space requirements.
• Integrated reverse-battery protection prevents reverse current conduction.
• Series architecture minimizes power dissipation compared to shunt references by drawing current only as needed.

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 'JC' designation corresponds to the 0.4% accuracy grade and 20ppm/°C temperature coefficient. Ensure the operating environment remains within the 0°C to 70°C specified range for guaranteed performance parameters. Check for any RoHS compliance documentation if required by local regulations.

Selection Notes

Select this component when a small footprint is critical but higher accuracy than the KC grade is required. The JC grade offers a balance between cost and precision, suitable for applications where ±0.4% initial accuracy is sufficient. Consider the 20mA sourcing capability for driving moderate loads without external amplification. Evaluate thermal management if operating near the upper limits of the input voltage or load current.

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

LT6660HCDC-2.5#TRPBF (Higher Accuracy Grade)

FAQ

Does the LT6660JCDC-2.5 require an output capacitor?

No, the LT6660 family is designed to be stable without an output compensation capacitor, which helps minimize PCB space and settling time.

What is the minimum input-to-output voltage differential?

The minimum dropout voltage is typically 0.9V at zero load current and increases to approximately 1.3V–1.4V at 10mA load current.