MIC1810-5UY-TR Microchip

MIC1810 Micrel MIC1810 Microprocessor Reset Circuit General Description Features The MIC1810 is an inexpensive microprocessor supervisory Precision voltage monitor for 5%, 10%, or 15% drop in circuit that monitors power supplies in microprocessor based 5V power supplies systems. /RESET remains valid with V as low as 1V CC 5A supply current (typical) The function of these devices is to assert a reset if the power 100ms minimum reset pulse width supply drops below a designated reset threshold level. Several No external components required different reset threshold levels are available to accommodate Available in 3-pin SOT-23 package 5%, 10%, or 15% drop in 5V powered systems. The MIC1810 has an active low /RESET output. The reset Applications output is guaranteed to remain asserted for a minimum of Portable equipment 100ms after V has risen above the designated reset thresh- CC Intelligent instruments old level. The MIC1810 comes in a 3-pin SOT-23 package. Critical microprocessor power monitoring Printers/computers Embedded controllers Ordering Information Threshold Part Number Marking* Voltage Operating Temp. Range Package Pb-Free MIC1810-5U NA 4.62V 40C to +85C SOT-23 No MIC1810-10U NB 4.37V 40C to +85C SOT-23 No MIC1810-15U NC 4.12V 40C to +85C SOT-23 No MIC1810-5UY NA 4.62V 40C to +85C SOT-23 Yes MIC1810-10UY NB 4.37V 40C to +85C SOT-23 Yes MIC1810-15UY NC 4.12V 40C to +85C SOT-23 Yes * Underbar symbol may not be to scale Typical Application V CC V V CC CC MIC1810 P RESET RESET Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC1810 Micrel Pin Conguration RESET 1 MIC1810 3 GND V CC 2 3-Lead SOT-23 Pin Description Pin Number Pin Name Pin Function 1 /RESET /RESET goes low if V falls below the reset threshold and remains as- CC serted for one reset timeout period (100ms min) after V exceeds the reset CC threshold. 2 VCC Power supply input. 3 GND IC ground pin MIC1810 2 July 2005