LT6703HDC-3

Overview

The LT6703HDC-3 is a micropower, low voltage comparator featuring an internal 400mV reference. It operates on a single supply from 1.4V to 18V with a typical quiescent current of 6.5μA at 5V. The device utilizes a noninverting input configuration and provides an open-collector output capable of sinking over 5mA. It is housed in a compact 2mm × 2mm DFN package.

Feature Summary

• Integrates a precise 400mV internal reference for threshold detection
• Supports wide supply voltage range from 1.4V up to 18V
• Features Over-The-Top inputs allowing operation regardless of supply level
• Includes built-in hysteresis to ensure stable switching

Applications

• Battery-powered system monitoring
• Threshold detectors
• Window comparators
• Relay driving circuits
• Automotive monitor and controls

Procurement Notes

Verify the specific temperature grade suffix (e.g., H for industrial/automotive) matches design requirements. Confirm the DC package outline dimensions against PCB footprint libraries. Ensure the noninverting input polarity aligns with the circuit logic. Check datasheet notes regarding exposed pad soldering for thermal performance.

Selection Notes

Select this part when a fixed 400mV threshold is required without external resistors. Choose the noninverting version if the signal must trigger above the reference. Consider the open-collector output for level translation needs. Verify that the 6.5μA supply current meets strict power budget constraints.

Part Context

This component belongs to the LT6703 family of micropower comparators manufactured by Analog Devices. The series includes variants with different input polarities and high-voltage ratings. The DC package offers a small form factor suitable for space-constrained portable electronics and industrial control boards.

Replacement Considerations

LT6703HDC-2#PBF: Identical specifications but features an inverting input instead of noninverting.