TPS3809L30

www.ti.com TPS3809J25, TPS3809L30, TPS3809K33, TPS3809I50 TPS3809JS2LV5S, 2T2P8DS–38AU0G9LUS3T0,19T9P9S–3R8E0V9ISKE3D3D, ETCPESM3B8ER092I05200 SLVS228D – AUGUST 1999 – REVISED DECEMBER 2020 TPS3809x 3-Pin Supply Voltage Supervisors 1 Features 3-pin SOT-23 package Supply current of 9 μA (typical) Precision supply voltage monitor 2.5 V, 3 V, 3.3 V, 5 V Pin-for-pin compatible with MAX 809 Temperature range:  –40°C to +85°C 2 Applications Factory automation Wireless speakers Motor drives Servers Appliances Electricity meters Building automation 3 Description The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems. The newer TLV809E device is an alternative with the same pins, functions and electrical parameters. During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td(typ) = 200 ms, starts after VDD has risen above the threshold voltage VIT. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed sense-threshold voltage VIT set by an internal voltage div...