This document introduces the STM6905 Quintuple ultralow voltage supervisor with push-button reset, released in January 2008. It features five voltage monitoring channels with an accurate ±1.8% voltage threshold across temperature (±1% at 25°C). It includes a primary supply (VCC) monitor and a fixed (V2IN) monitor, as well as three additional adjustable supply monitor inputs. The device also has a 600 mV internal reference, RST output (open drain), and a manual reset input. It is suitable for applications such as set-top boxes, multi-voltage systems, cable/satellite applications, computer systems, and data storage equipment.
The STM6905 is a low voltage/low supply current processor supervisor designed to monitor up to five system power supply voltages. It features two fixed reset thresholds (VCC and V2IN) and three adjustable supply monitor inputs (V3IN, V4IN, V5IN) using an external resistor-divider network. The device includes a manual reset input (MR) and an active-low open drain reset output (RST).
| Supply Voltage Range | 0.8 V to 5.5 V |
|---|---|
| Operating Temperature | -40°C to 85°C |
| Supply Current | 12 µA (typ) |
| Reset Delay Time | 210 ms (typ) |
| Package Type | 8-pin MSOP/TSSOP |
| Reset Threshold Accuracy | ±1.8% across temperature |
The device monitors up to five system power supply voltages.
The internal reference voltage is 600 mV.
The typical reset delay time (trec) on power-up is 210 ms.