LMC7221 is a micropower CMOS comparator available in the space saving SOT23-5 package. This makes this comparator ideal for space and weight critical designs. The LMC7221 is also available in conventional DIP and SO-8 packages. The LMC7221 is supplied in two offset voltage grades, 5 mV and 15 mV. The open drain output can be pulled up with a resistor to a voltage which can be higher or lower than the supply voltage — this makes the part useful for mixed voltage systems. For a tiny comparator with a push-pull output, please see the LMC7211 datasheet.
The LMC7221 is a micropower CMOS comparator offered in a space‑saving SOT‑23‑5 package, with optional 8‑pin DIP and SO‑8 versions. It features rail‑to‑rail input range, open‑drain output, low supply current and short‑circuit protection, making it suitable for mixed‑voltage and battery‑powered designs.
The document provides absolute maximum ratings, electrical characteristics, AC performance, typical application information, layout guidelines, and mechanical dimensions, along with ordering and packaging details.
| Typical Supply Current (5 V) | 7 µA |
|---|---|
| Short‑Circuit Current Protection | 40 mA |
The device operates from 2.7 V up to 15 V supply voltage.
Typical supply current is about 7 µA at a 5 V supply.
The comparator includes short‑circuit protection rated at 40 mA.