DS1815 EconoReset is a power monitor that automatically restarts a microprocessor after a power failure and maintains reset for 150ms after VCC returns to an in-tolerance condition. It has a precision temperature-compensated voltage reference and voltage sensor for accurate 5%, 10% or 20% power monitoring. The device is available in TO-92 or space saving surface-mount SOT-23 packages.
The DS1815 EconoReset is a power‑monitor and reset circuit designed to automatically restart a microprocessor after a power‑failure and keep the reset line active for about 150 ms while the supply stabilises. It integrates a precision temperature‑compensated voltage reference, a voltage sensor and a push‑pull output suitable for low‑current operation.
Key features include accurate 5 %, 10 % or 20 % power‑monitoring, low‑cost TO‑92 or space‑saving SOT‑23 packages, and a wide operating temperature range of –40 °C to +85 °C. The datasheet lists pin assignments, timing diagrams, absolute‑maximum ratings and detailed electrical characteristics for designers.
| Operating Temperature | -40 °C to +85 °C |
|---|---|
| Supply Voltage (VCC) | 0.0 V to 5.5 V |
| Reset Active Time (tRST) | 100 ms – 250 ms |
| Output Current @ 0.4 V (IOL) | +10 mA |
| Package Options | TO‑92 or SOT‑23 |
The reset signal remains active for 100 ms to 250 ms after power returns to tolerance.
The device is available in low‑cost TO‑92 and space‑saving surface‑mount SOT‑23 packages.
The DS1815 operates from –40 °C to +85 °C.
The recommended VCC range is 1.2 V to 5.5 V, with an absolute maximum of 0.0 V to 5.5 V.