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TPS3808G125DBVT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3808G125DBVT 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 SBVS050F – MAY 2004 – REVISED OCTOBER 2006 Low Quiescent Current, Programmable-Delay Supervisory Circuit • Power-On Reset Generator with Adjustable The TPS3808xxx family of microprocessor Delay Time: 1.25ms to 10s supervisory circuits monitor system voltages from 0.4V to 5.0V, asserting an open drain RESET signal • Very Low Quiescent Current: 2.4 µA typ when the SENSE voltage drops below a preset • High Threshold Accuracy: 0.5% typ threshold or when the manual reset (MR) pin drops • Fixed Threshold Voltages for Standard to a logic low. The RESET output remains low for the Voltage Rails from 0.9V to 5V and Adjustable user adjustable delay time after the SENSE voltage Voltage Down to 0.4V Are Available and manual reset (MR) return above their thresholds. • Manual Reset (MR) Input The TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3V. The reset • Open-Drain RESET Output delay time can be set to 20ms by disconnecting the • Temperature Range: –40 °C to +125°C CT pin, 300ms by connecting the CT pin to VDD using • Small SOT23 and 2mm × 2mm QFN Packages a resistor, or can be user-adjusted between 1.25ms and 10s by connecting the CT pin to an external capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA so it is well-suited to • DSP or Microcontroller Applications battery-powered applications. It is available in a • Notebook/Desktop Computers small SOT23 and an ultra-small 2mm × 2mm QFN • PDAs/Hand-Held Products PowerPAD™ package and is fully specified over a • Portable/Battery-Powered Products temperature range of –40 °C to +125°C (T J). • FPGA/ASIC Applications 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 other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2006, 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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