TPS3123

www.ti.com TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS Check for Samples: TPS3123-xx, TPS3124-xx, TPS3125-xx, TPS3126-xx, TPS3128-xx FEATURES 1 2 Minimum Supply Voltage of 0.75 V Supply Voltage Supervision Range: – 1.2 V, 1.5 V, 1.8 V (TPS312x) – 3 V (TPS3125 Devices Only) – Other Versions on Request Power-On Reset Generator With Fixed Delay Time of 180 ms Manual Reset Input (TPS3123/5/6/8) Watchdog Timer Retriggers the RESET Output at VDD ≥ VIT Supply Current of 14 μA (Typ) Small SOT23-5 Package Temperature Range of –40°C to +85°C Reset Output Available in Push-Pull (Active Low and High) and Open-Drain (Active-Low) APPLICATIONS Applications Using Low Voltage DSPs, Microcontrollers, or Microprocessors Portable/Battery-Powered Equipment Wireless Communication Systems Programmable Controls Industrial Equipment Notebook/Desktop Computers Intelligent Instruments DBV PACKAGE (TOP VIEW) RESET TPS3123/T PS3128 15 VDD GND 2 MR 3 4 WDI RESET GND RESET TPS3124 15 2 34 VDD WDI RESET GND RESET TPS3125/ TPS3126 15 2 34 VDD MR 1.2 V VDD RESET MR WDI TPS3123J12 GND CVDD DVDD TMS320UVC5402 RESET XF GND Figure 1. Typical Low-Voltage DSP Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto ap...