Nanopower supervisor with programmable sense and reset delay

The TPS3899 is a nano power, precision

voltage supervisor with ±0.5% threshold accuracy and programmable sense and reset time delay

in a 6 pin space saving 1.5mm x 1.5mm WSON package. The TPS3899 is a feature-rich voltage

supervisor that offers the smallest total solution size in its class. Built-in hysteresis

along with programmable delay prevent false reset signals when monitoring a voltage rail or

push button signals.

The separate VDD and SENSE pins allow for

the redundancy sought by high-reliability systems. SENSE is decoupled from VDD and can

monitor rail voltages other than VDD. Optional use of external resistors are supported by

the high impedance input of the SENSE pin. Both CTS and CTR provide delay adjustability on

the rising and falling edges of the RESET signals. CTS also functions as a debouncer by

ignoring voltage glitches on the monitored voltage rails and operates as a "manual reset"

that can be used to force a system reset.

The precision performance, best in-class

features in a compact form factor, makes the TPS3899 an ideal solution for wide ranging

industrial and battery-powered applications such as Factory/Building Automation, Motor

Drives, and consumer products. The device is fully specified over a temperature range of

–40°C to +125°C (TA).