The LT6700/LT6700HV combine two micropower, low voltage comparators with a 400mV reference in a 6-lead SOT-23 or tiny DFN package. Operating with supplies from 1.4V up to 18V, these devices draw only 6.5μA, making them ideal for low voltage system monitoring. Hysteresis is included in the comparators, easing design requirements to insure stable output operation.

The comparators each have one input available externally; the other inputs are connected internally to the reference. The comparator outputs are open collector and the output load can be referred to any voltage up to 18V (36V for LT6700HV), independent of supply voltage. The output stage sinking capability is guaranteed to be greater than 5mA over temperature.

The three versions of this part differ by the polarity of the available comparator inputs. The LT6700-1/ LT6700HV-1 has one inverting input and one noninverting input, making it suitable for use as a window comparator. The LT6700-2/LT6700HV-2 has two inverting inputs and the LT6700-3/LT6700IS6-3#TRPBF has two noninverting inputs. All versions are offered in commercial, industrial and automotive temperature ranges.

Internal 400mV Reference

Total Threshold Error: ±1.25% Max at 25°C

Inputs and Outputs Operate to 36V

Wide Supply Range: 1.4V to 18V

Specified for –55°C to 125°C Temperature Range

Low Quiescent Current: 6.5μA Typ at 5V

Internal Hysteresis: 6.5mV Typ

Low Input Bias Current: ±10nA Max

Over-The-Top® Input also Includes Ground

Open-Collector Outputs Allow Level Translation

Choice of Input Polarities: LT6700-1/LT6700-2/ LT6700-3/LT6700HV-1/LT6700HV-2/LT6700HV-3

Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN Packages

Battery-Powered System Monitoring

Threshold Detectors

Window Comparators

Relay Driving

Industrial Control Systems

Handheld Instruments

Automotive Monitor and Controls