LT6660KCDC-5#TRMPBF

Overview

The LT6660KCDC-5#TRMPBF is a micropower series voltage reference from Analog Devices, housed in a 3-lead 2mm × 2mm × 0.75mm DFN package. It provides a fixed 5V output with an initial accuracy of ±0.5% and a maximum temperature coefficient of 50ppm/°C. The device guarantees a 20mA output current and operates within an input voltage range of VOUT + 0.9V to 20V. Supply current is typically 200µA at 25°C. It features reverse-battery protection and requires no 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, reducing board space and settling time.
• Reverse-battery protection prevents reverse current conduction.
• Low IR reflow induced stress minimizes output voltage shifts during soldering.

Applications

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

Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging with lead-free compliance. Confirm the KCDC designation corresponds to the 0.5% accuracy grade and 50ppm/°C temperature coefficient. Ensure the operating environment stays within the specified 0°C to 70°C 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 small footprint is critical but higher accuracy than shunt references is required. The KCDC variant offers a balance of cost and performance with 0.5% accuracy. Consider the 50ppm/°C drift if operating across wide temperature ranges. Compare against the LT1460 for applications requiring larger packages or tighter tolerances. Ensure input voltage remains above VOUT + 0.9V for proper regulation.

Part Context

This part belongs to the LT6660 family of tiny micropower precision series references. The family includes options for 2.5V, 3V, 3.3V, 5V, and 10V outputs. Variants are available in HC (0.2%), JC (0.4%), and KC (0.5%) accuracy grades. All share the same 3-lead DFN package and core architecture designed for low power dissipation and high stability in space-constrained designs.

Replacement Considerations

LT6660KCDC-5#TRPBF: Identical electrical specifications and accuracy grade; differs only in tape and reel packaging quantity or handling format.

FAQ

Does the LT6660KCDC-5 require an output capacitor for stability?

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 required?

The device requires a minimum dropout voltage of 0.9V to maintain regulation under no-load conditions.

How does the KCDC accuracy grade compare to other variants?

The KCDC variant has a maximum initial accuracy of ±0.5% and a maximum temperature coefficient of 50ppm/°C, which is less precise than the HC (0.2%, 20ppm/°C) and JC (0.4%, 20ppm/°C) grades.