LTC1727/LTC1728 17278fb Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
The LTC1727 and LTC1728 are micropower precision triple‑supply monitors that can sense three supply voltages simultaneously and provide a reset output when any supply falls out of spec. They are offered in 8‑lead MSOP and 5‑lead SOT‑23 packages for space‑constrained designs.
Key specifications include typical supply current of 1‑2 µA, reset‑threshold voltage around 3.0 V, operating temperature from –40 °C to 85 °C, and a lead‑temperature limit of 300 °C for soldering. The device features open‑drain reset and comparator outputs with optional pull‑up resistors.
| Operating Temperature Range | -40 °C to 85 °C |
|---|---|
| Lead Temperature (Soldering, 10 s) | 300 °C |
The RST pin is an active‑low, open‑drain logic output with a weak pull‑up to Vec3.
It monitors three inputs simultaneously (5 V, 3.3 V, and an adjustable voltage).
The device operates from –40 °C to 85 °C.