±0.5% Accurate Quad Configurable Supervisor

The LTC2962 series of configurable power supply monitors can supervise systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor thresholds per channel can be selected using external 1% resistors connected to the programming (PG) inputs. The preset voltage thresholds are accurate to ±0.5% over temperature. Positive (+ADJ) and negative (−ADJ) adjustable inputs with a 0.5V threshold allow undervoltage, negative voltage and overvoltage monitoring.

The watchdog (LTC2963 only) and reset timeout periods are adjustable using external capacitors. Accurate voltage thresholds and comparator glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC input voltage down to 1V.

The flexibility of the LTC2962 family provides the ability to monitor a wide variety of power supply combinations, including multiple supplies of the same voltage, with ±0.5% accuracy.

APPLICATIONS

* High Reliability Systems

* Network, Telecom and Server Systems

* Automotive Control Systems

* Simultaneously Monitor Four Power Supplies

* ±0.5% Threshold Accuracy Over Temperature

* Selectable −4% and −6% Thresholds per Supply:

5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1V and ±ADJ

* Adjustable Reset (RST) Timeout

* Overvoltage and Negative Voltage Monitoring

* Push-Pull or Open-Drain RST Output