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SIP825ZEU Datasheet(PDF) 1 Page - Vishay Siliconix |
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SIP825ZEU Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 6 page SiP823/SiP824/SiP825 Vishay Siliconix Document Number: 72397 S-41150—Rev. B, 14-Jun-04 www.vishay.com 1 5-Pin mP Reset Circuits with Watchdog Timer and Manual Reset FEATURES APPLICATIONS D Precision Power Supply Monitoring with "1.5% Accuracy D Low Quiescent Current: 3 mA max. D Low Threshold Voltage Temperature Coefficient: 100 ppm max. D Guaranteed RESET Valid Dow to VCC = 1 V D Seven Reset Threshold Options D Small SOT23-5 Packages D No External Components D Power Supply Transient Immunity D Portable Intelligent Electronics D Computers and Controllers D Automotive Electronics D Critical mP/mC Power Supply Monitoring DESCRIPTION The SiP823/SiP824/SiP825 series are mProcessor supervisory circuits in a 5-pin SOT23 package, that combine the functions of power supply and mProcessor monitoring. If the power supply voltage drops, or has been, below a safe level or the mProcessor shows signs of problematic inactivity, the circuit will generate a reset signal at it’s output. The SiP823 and SiP825 have an input to accommodate manual reset. Seven pre-programmed reset threshold voltage levels are available as standard options. Specially configured options are available upon request, allowing for further customization of reset voltage, reset time-out, and watchdog time-out periods. The SiP823 has a reset output that is “active low” and the SiP824 and SiP825 have complementary outputs for both “active high” and “active low” resets. Both output drives are push/pull configurations. Space saving SOT23-5 packages and low quiescent current make this family of products ideally suited for portable battery operated equipment. These circuits fully ignore fast negative VCC transients and have valid reset output signals with power supply levels down to 1 V. PACKAGING AND PIN DEFINITION Top View 3 5 SOT-23 1 VCC See page 2 for ordering and marking information. GND 2 4 WDI RESET MR Top View 3 5 SOT-23 1 VCC GND 2 4 WDI RESET Top View 3 5 SOT-23 1 VCC GND 2 4 MR RESET RESET RESET SiP823 SiP824 SiP825 TYPICAL APPLICATION CIRCUIT GND GND VCC VCC SiP823 mProcessor VCC I/O RESET RESET WDI MANUAL RESET MR |
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