The DS1233D EconoReset is a microprocessor power supply monitor with automatic restart function. It accurately monitors the 5V power supply and uses a precision temperature-compensated voltage reference and voltage sensor. It detects out-of-tolerance power supply conditions and warns the processor-based system of impending power failure. After the power supply returns to an in-tolerance condition, it keeps the reset signal active for approximately 350 ms to allow stabilization of the power supply and processor.
The DS1233D EconoReset monitors a 5 V supply and forces a reset when the voltage goes out of tolerance. It holds the reset active for about 350 ms after the supply returns to the acceptable range, allowing the processor and power supply to stabilize.
The device is offered in a low‑cost TO‑92 package or a surface‑mount SOT‑223 package, includes an internal 5 kΩ pull‑up resistor, and operates from –40 °C to +85 °C. Electrical characteristics such as VCC trip points (5 %, 10 %, 15 %) and low operating current (≈50 µA) are provided for system designers.
| Supply Voltage VCC | 5.0 V (typ) |
|---|---|
| Operating Temperature | -40 °C to +85 °C |
| Reset Active Time | 350 ms (typ) |
| Internal Pull‑Up Resistor | 5 kΩ (typ) |
| VCC Trip Point (5 % tolerance) | 4.625 V (typ) |
The reset remains active for approximately 350 ms to let the supply and processor stabilize.
The device includes an internal pull‑up resistor of about 5 kΩ.
It operates from –40 °C up to +85 °C.