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MIC2753

Micrel Semiconductor
Part Number MIC2753
Manufacturer Micrel Semiconductor
Description Power Supply Supervisors
Published Mar 26, 2005
Detailed Description MIC2753/2754 Micrel MIC2753/2754 Power Supply Supervisors Preliminary Information General Description The MIC2753 and...
Datasheet PDF File MIC2753 PDF File

MIC2753
MIC2753

Overview
MIC2753/2754 Micrel MIC2753/2754 Power Supply Supervisors Preliminary Information General Description The MIC2753 and MIC2754 are ultraminiature, full-featured, power supply supervisors featuring active-high and activelow reset outputs, respectively.
The MIC2753/4 includes an undervoltage detector with a power-on reset generator and reset output, an overvoltage detector with a separate output for activating crowbar circuits, and a debounced manual reset input.
Typical supply current is a low 30µA.
These devices provide a 140ms minimum reset output at power-on and assert their reset outputs any time the input voltage deviates beyond preset overvoltage or undervoltage thresholds.
Reset outputs remain asserted for 140ms (minimum) after the input returns to normal or after releasing the manual reset.
When an overvoltage condition is detected, the overvoltage output is immediately activated.
Hysteresis on both thresholds prevents erratic operation due to noise.
Features • • • • • Undervoltage and overvoltage monitor Separate overvoltage flag output Generates 140ms (minimum) power-on reset pulse Debounced manual reset input Choice of active-high (MIC2753) or active-low (MIC2754) reset outputs • Low 30µA typical supply current • No external components needed • IttyBitty™ SOT-23-5 package Applications • • • • Computer systems Embedded controllers Power supplies Telecommunications systems Typical Application VCC Fuse MIC2754 Manual Reset VIN MR GND RST HV Microcontroller VCC GND RST IN SCR Crowbar Micrel, Inc.
• 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.
micrel.
com June 1999 1 MIC2753/2754 MIC2753/2754 Micrel Ordering Information Part Number MIC2753-RBM5 MIC2753-SBM5 MIC2753-TBM5 MIC2753-MBM5 MIC2753-LBM5 MIC2754-RBM5 MIC2754-SBM5 MIC2754-TBM5 MIC2754-MBM5 MIC2754-LBM5 Mark UDR UDS UDT UDM UDL UER UES UET UEM UEL Lower Threshold Voltage 2.
63V 2.
93V 3.
08V 4.
38V 4.
63V 2.
63V 2.
93V 3.
08V 4.
38V 4.
63V M...


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