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TPS3125L30DBV Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3125L30DBV Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page TPS3123J12, TPS3123G15, TPS3123J18, TPS3124J12, TPS3124G15 TPS3124J18, TPS3125J12, TPS3125G15, TPS3125J18, TPS3125L30 ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS SLVS227 – AUGUST 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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 Figure 1. Typical Dual-Voltage DSP Application MR TPS3125J12 GND VDD RESET MR GND VDD RESET TPS3823-25 XF RESET CVDD DVDD GND 2.5 V 1.2 V TMS320UVC5402 WDI 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. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET output 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, tdtyp = 180 ms starts after VDD has risen above the threshold voltage VIT. Copyright © 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 3 2 4 5 DBV PACKAGE (TOP VIEW) 1 TPS3123 RESET GND MR VDD WDI 3 2 4 5 1 TPS3124 RESET GND RESET VDD WDI 3 2 4 5 1 TPS3125 RESET GND RESET VDD MR |
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