TPS37044 Multi-Channel Window Supervisor

Texas Instruments' TPS37044 is a low-power precision window or standard voltage supervisor that can be configured as a quad, triple, dual, or single channel. Each channel has a threshold accuracy of ±1% in an 8-pin (1.6 mm x 2.9 mm) SOT-23 package offering a small solution size. The TPS37044 includes a very accurate threshold detection with high resolution making the device ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. The built-in low threshold hysteresis and a fixed reset delay (t_D options of 20 μs to 1,200 ms) prevent false reset signals when monitoring multiple voltage rails.

The TPS37044 does not require external resistors for setting the overvoltage and undervoltage reset thresholds, further optimizing overall accuracy, cost, solution size, and reliability for safety systems. The separate V_DD and SENSEx pins allow monitoring of rail voltages other than V_DD or can be used as a push-button input. Optional use of external resistors is supported by the SENSEx pins. Each channel can be customized to its own overvoltage and undervoltage window detection with an upper and lower threshold tolerance that can be symmetric or asymmetric.