The DS1833 EconoReset is a low-cost, high-precision microprocessor 5V power supply monitor that automatically restarts the microprocessor after power failure. It uses a precision temperature compensated reference and voltage sensor to provide 5%, 10% or 15% accurate power monitoring and maintains an active high reset signal for approximately 350 ms after VCC returns to an in-tolerance condition.
The DS1833 EconoReset uses a precision temperature‑compensated reference and comparator to detect out‑of‑tolerance conditions on a 5 V power rail. When a fault is detected, the device asserts a reset signal and holds it active for about 350 ms after the supply returns to the selected tolerance, allowing the processor and power supply to stabilize.
The part 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. Detailed electrical characteristics, absolute maximum ratings, and selection tables for different trip‑point options are provided.
| Supply Voltage (VCC) | 5.0 V (typ) |
|---|---|
| Reset Active Time | 250 ms – 450 ms |
| Operating Current | 1.5 mA – 2 mA |
| Internal Pull‑Up Resistor | 3.75 kΩ – 6.25 kΩ |
| Output Capacitance | 10 pF |
The reset signal stays active for 250 ms to 450 ms after power‑up.
The typical supply voltage is 5.0 V.
It is offered in a TO‑92 package and a surface‑mount SOT‑223 package.