CAT8836

CAT8836 NanoPower Supervisory Circuit Description The CAT8836 is a voltage supervisory circuit intended to provide circuit initialization and start−up timing for DSPs and other processor−based systems. When system power comes on, CAT8836’s output once the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps the output active as long as VDD remains below the threshold voltage of VTH. After VDD exceeds the monitoring threshold an internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The duration of this reset delay is controlled by the CT input. When CT is connected to GND the reset delay is 10 ms, typical, in duration and when connected to VDD, the delay time is typically 200 ms. Whenever the supply voltage drops below the monitoring threshold voltage VTH, the output becomes active (low) again. Features Supply Current: 220 nA (typical) Precision Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3.0 V, and 3.3 V Power−On Reset Generator with Selectable Delay Time: 10 ms or 200 ms Push/Pull RESET (active low) Output Manual Reset Input Pin−for−Pin Replacement for TPS3836 TSOT23−5 Package Temperature Range: −40°C to +85°C These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Typical Applications Applications Using Low−Power DSPs, Microcontrollers, or Microprocessors Portable− and Battery−Powered Equipment Intelligent Instruments Wirele...