TPS3123J18

TPS3123J12, TPS3123G15, TPS3123J18, TPS3124J12, TPS3124G15 TPS3124J18, TPS3125J12, TPS3125G15, TPS3125J18, TPS3125L30 ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS SLVS227 – AUGUST 1999 features D Minimum Supply Voltage of 0.75 V D Supply Voltage Supervision Range: – 1.2 V, 1.5 V, 1.8 V (TPS3123, TPS3124, TPS3125) – 3 V (TPS3125 Devices only) D Power-On Reset Generator With Fixed Delay Time of 180 ms D Manual Reset Input (TPS3123 and TPS3125) D Watchdog Timer Retriggers the RESET Output at VDD ≥ VIT D Supply Current of 14 µA (Typ) D SOT23–5 Package D Temperature Range . . . – 40°C to 85°C typical applications D Applications Using Low Voltage DSPs, Microcontrollers or Microprocessors D Wireless Communication Systems D Portable/Battery-Powered Equipment D Programmable Controls D Intelligent Instruments D Industrial Equipment D Notebook/Desktop Computers D Automotive Systems DBV PACKAGE (TOP VIEW) 2.5 V 1.2 V RESET GND 15 TPS3123 2 VDD VDD MR TPS3125J12 GND RESET CVDD DVDD TMS320UVC5402 MR RESET GND RESET 34 15 TPS3124 2 34 WDI VDD WDI MR WDI VDD RESET TPS3823-25 GND XF RESET GND RESET GND RESET 15 TPS3125 2 34 VDD MR Figure 1. Typical Dual-Voltage DSP Application description The TPS3123, TPS3124, TPS3125 family of ultra-low voltage processor supervisory circuits provides circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET is asserted when the supply voltage (VDD) becomes higher than 0.75 V. Th...