LT6660JCDC-5

Overview

The LT6660JCDC-5 is a micropower series voltage reference with a fixed 5V output, housed in a 3-lead 2mm × 2mm DFN package. It provides an initial accuracy of ±0.4% and a maximum temperature coefficient of 20ppm/°C. The device guarantees up to 20mA output current with line regulation ranging from 100 to 1000ppm/V depending on input voltage differential. Supply current is typically 200µA at 25°C. It operates within an input voltage range of VOUT + 0.9V to 20V, features reverse-battery protection, and requires no output compensation capacitor.

Feature Summary

• Curvature compensation technology ensures low drift and high precision without requiring external output capacitors.
• Integrated reverse-battery protection prevents reverse current conduction during fault conditions.
• Laser-trimmed thin-film resistors achieve high initial accuracy across the specified operating temperature range.

Applications

• Precision regulators
• A/D and D/A converters
• Handheld instruments

Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and packaging format. Confirm RoHS compliance status for the exact part number variant. Ensure the supplier source is authorized to guarantee component authenticity and traceability. Check for any specific handling requirements related to the exposed pad ground connection.

Selection Notes

Select this model when a 5V fixed reference is required in space-constrained designs. The JCDC grade offers a balance of 0.4% accuracy and 20ppm/°C drift suitable for general precision applications. Consider the 20mA sourcing capability for driving moderate loads directly. Evaluate thermal management needs as junction temperature affects hysteresis performance.

Part Context

This component 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 current capabilities. The family utilizes curvature compensation to minimize temperature dependence across the operational range.

Replacement Considerations

LT6660HCDC-5 (Higher accuracy grade)

FAQ

Does the LT6660JCDC-5 require an output compensation capacitor?

No, the LT6660 does not require an output compensation capacitor, which saves PC board space and allows for fast settling times.

What is the minimum input-output voltage differential for stable operation?

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