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TPS3801K33 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3801K33 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page TPS3801J25, TPS3801L30, TPS3801K33, TPS3801I50 ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS SLVS219 – AUGUST 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 5-Pin SC-70 (SOT-323) Package D Supply Current of 9 µA (Typ) D Power-On Reset Generator With Fixed Delay Time of 200 ms D Precision Supply Voltage Monitor 2.5 V, 3 V, 3.3 V, 5 V D Manual Reset Input D Temperature Range ...–40°C to 85°C description The TPS3801 family of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems. 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 divider. The TPS3801 devices incorporate a manual reset input, MR. A low level at MR causes RESET to become active. The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 5-pin SC-70 (SOT-323) package which is only about half the size of a 5-pin SOT-23 package. The TPS3801 devices are characterized for operation over a temperature range of –40 °C to 85°C. typical applications VDD = 3.3 V 100 nF TPS3801K33 TMS320LC54x GND GND MR RESET RESET VDD VDD D Applications Using 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 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 TPS3801 . . . DCK PACKAGE (TOP VIEW) 1 RESET GND MR VDD GND |
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