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TPS3837 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3837 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page CT N/C (1) MR 6 5 4 V DD GND RESET 1 2 3 TPS3838DRV 2mmx2mmSON-6 (TOPVIEW) GND 3 2 4 5 (TOPVIEW) 1 CT GND MR V DD RESET TPS3836,TPS3838 DBVPACKAGE 3 2 4 5 (TOPVIEW) 1 CT GND MR V DD RESET TPS3837 DBVPACKAGE V DD GND CT MR RESET TPS3836K33 V CC V SS RST MSP430 T Lithium Battery 3.6V TypicalApplicationCircuit TPS3836 TPS3837 TPS3838 www.ti.com SLVS292E – JUNE 2000 – REVISED OCTOBER 2010 NanoPower Supervisory Circuits Check for Samples: TPS3836, TPS3837, TPS3838 1 FEATURES DESCRIPTION 23 • Supply Current: 220 nA (typical) The TPS3836, TPS3837, and TPS3838 families of supervisory circuits provide circuit initialization and • Precision Supply Voltage Supervision Range: timing supervision, primarily for DSP and 1.8 V, 2.5 V, 3.0 V, and 3.3 V processor-based systems. • Power-On Reset Generator With Selectable During power-on, RESET is asserted when the Delay Time: 10 ms or 200 ms supply voltage VDD becomes higher than 1.1 V. • Push/Pull RESET Output (TPS3836), Push/Pull Thereafter, the supervisory circuit monitors VDD and RESET Output (TPS3837), or Open-Drain keeps the RESET output active as long as VDD RESET Output (TPS3838) remains below the threshold voltage of VIT. An • Manual Reset internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. • SOT23-5 and 2x2 SON-6 Packages The delay time starts after VDD has risen above the • Temperature Range: –40°C to +85°C threshold voltage VIT. When CT is connected to GND, a fixed delay time of APPLICATIONS typical 10 ms is asserted. When connected to VDD, • Applications Using Low-Power DSPs, the delay time is typically 200 ms. When the supply Microcontrollers, or Microprocessors voltage drops below the threshold voltage VIT, the • Portable- and Battery-Powered Equipment output becomes active (low) again. All the devices of • Intelligent Instruments this family have a fixed-sense threshold voltage (VIT) • Wireless Communication Systems set by an internal voltage divider. • Notebook Computers The TPS3836 has an active-low, push-pull RESET • Automotive Systems output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, • Applications Using the MSP430™ open-drain RESET output. The product spectrum is blank designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, blank and 3.3 V. The circuits are available in either a SOT23-5 or 2x2 SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to +85°C. (1) N/C: Not connected. 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 appears at the end of this data sheet. 2 MSP430 is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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