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TPS3808G33DBVRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3808G33DBVRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 15 page www.ti.com FEATURES DESCRIPTION APPLICATIONS Typical Application Circuit 1.2V 3.3V TPS3808G12 TPS3808G33 DSP SENSE V DD V DD SENSE V I/O V CORE GPIO GND GND GND RESET MR C T C T RESET DBV PACKAGE SOT23 (TOP VIEW) VDD SENSE CT RESET GND MR 1 2 3 6 5 4 RESET GND MR 6 5 4 V DD SENSE C T 1 2 3 DRV PACKAGE 2mm x 2mm QFN (TOP VIEW) Power PAD TPS3808 SBVS050E – MAY 2004 – REVISED OCTOBER 2005 Low Quiescent Current, Programmable-Delay Supervisory Circuit • Power-On Reset Generator with Adjustable Delay Time: 1.25ms to 10s The TPS3808xxx family of microprocessor supervisory circuits monitor system voltages from • Very Low Quiescent Current: 2.4 µA typ 0.4V to 5.0V, asserting an open drain RESET signal • High Threshold Accuracy: 0.5% typ when the SENSE voltage drops below a preset • Fixed Threshold Voltages for Standard threshold or when the manual reset (MR) pin drops to Voltage Rails from 0.9V to 5V and Adjustable a logic low. The RESET output remains low for the Voltage Down to 0.4V Are Available user adjustable delay time after the SENSE voltage and manual reset (MR) return above their thresholds. • Manual Reset (MR) Input • Open-Drain RESET Output The TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3V. The reset • Temperature Range: –40 °C to +125°C delay time can be set to 20ms by disconnecting the • Small SOT23 and 2mm × 2mm QFN Packages CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 10s by connecting the CT pin to an external • DSP or Microcontroller Applications capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA so it is well-suited to • Notebook/Desktop Computers battery-powered applications. It is available in a small • PDAs/Hand-Held Products SOT23 and an ultra-small 2mm × 2mm QFN • Portable/Battery-Powered Products PowerPAD™ package and is fully specified over a • FPGA/ASIC Applications temperature range of –40 °C to +125°C (T J). 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. PowerPAD is a trademark of Texas Instruments. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2005, 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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