LT6660HCDC-3

Overview

The LT6660HCDC-3 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 3V with an initial accuracy tolerance of ±0.2%. The device features a maximum temperature coefficient of 20ppm/°C and guarantees a load current capability of up to 20mA. Supply current ranges from 145µA to 220µA depending on operating conditions. It operates within an input voltage range of VOUT + 0.9V to 20V and supports a specified temperature range of 0°C to 70°C.

Feature Summary

• Curvature compensation technology ensures low temperature drift for high precision stability.
• Laser trimmed thin-film resistors achieve high initial output accuracy.
• Reverse-battery protection prevents reverse current conduction.
• Operational stability is maintained without requiring an external output compensation capacitor.

Applications

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

Procurement Notes

Verify the specific suffix requirements for tape and reel packaging or lead-free compliance when ordering. Confirm that the component meets RoHS standards if required by your manufacturing process. Ensure the selected part number corresponds to the correct temperature grade and accuracy class for your design specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring high accuracy in a minimal footprint where power dissipation must be minimized compared to shunt references. The lack of output capacitor requirement makes it suitable for space-constrained designs or those demanding fast settling times. Ensure the input voltage remains within the specified dropout limits relative to the 3V output.

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 output current capabilities. The family utilizes curvature compensation and laser trimming to deliver performance suitable for precision analog signal chains.

Replacement Considerations

LT6660JCDC-3

FAQ

Does the LT6660HCDC-3 require an output capacitor?

No, the LT6660 family is designed to be stable without an output compensation capacitor, which helps save PCB space and allows for faster settling times.

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

The minimum input-to-output voltage differential is 0.9V to maintain regulation at zero load current.