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TPS3808G15DBVR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3808G15DBVR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page 1 FEATURES DESCRIPTION APPLICATIONS RESET GND MR 6 5 4 V DD SENSE C T 1 2 3 DRVPACKAGE 2mmx2mmQFN (TOPVIEW) Power PAD DBVPACKAGE SOT23 (TOPVIEW) V DD SENSE C T RESET GND MR 1 2 3 6 5 4 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 TypicalApplicationCircuit TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 Low Quiescent Current, Programmable-Delay Supervisory Circuit 23 • 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: 2.4µA typ when the SENSE voltage drops below a preset • High Threshold Accuracy: 0.5% typ threshold or when the manual reset (MR) pin drops to • Fixed Threshold Voltages for Standard Voltage a logic low. The RESET output remains low for the Rails from 0.9V to 5V and Adjustable Voltage user-adjustable delay time after the SENSE voltage Down to 0.4V Are Available and manual reset (MR) return above the respective thresholds. • Manual Reset (MR) Input The TPS3808 uses a precision reference to achieve • Open-Drain RESET Output 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 capacitor. The TPS3808 has a very low typical • DSP or Microcontroller Applications 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 (TJ). 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 PowerPAD 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 © 2004–2008, 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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