MIC826 Datasheet, PDF (1/15 Pages) Micrel Semiconductor – Voltage Supervisor with Watchdog Timer,Manual Reset, and Dual Outputs In 1.6mm x 1.6mm TDFN

MIC826
Voltage Supervisor with Watchdog Timer,
Manual Reset, and Dual Outputs
In 1.6mm x 1.6mm TDFN
General Description
Features
The MIC826 is a low-current, ultra-small, voltage
supervisor with manual reset input, watchdog timer, and
active-high and active-low push-pull outputs. The reset
outputs are asserted and held when the supply voltage
falls below the factory-programmed threshold voltage,
when the /MR pin is pulled low, or if the watchdog times
out. Reset is asserted for the reset timeout delay after the
supply voltage increases above the rising threshold
voltage or when manual reset input is asserted high.
The MIC826 features an integrated pull-up resistor on the
/MR. An active-low push-pull reset output (/RESET) and
an active-high reset output (RESET) provide flexibility
when interfacing with various microcontrollers, PMICs, or
load switches. The watchdog input can be left
unconnected for applications that do not require watchdog
monitoring.
The MIC826 consumes a quiescent current of only 3.8µA
and is offered in a tiny, space-saving, 6-pin 1.6mm x
1.6mm Thin DFN package. It is rated for the –40°C to
+125°C temperature range.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
• Precision 1.8V to 5V power supply monitor
• ±0.5% threshold accuracy at T_A = +25°C
• ±1.5% threshold accuracy from T_A = –40°C to +125°C
• 3.8µA supply current (MIC826S/R/T/W/Y/Z)
• 4.8µA supply current (MIC826L/M)
• Manual reset input
• 140ms (min.) reset timeout period
• 1.6s (typ.) watchdog timeout period
• Float watchdog timer input to disable watchdog timer
• Active-high and active-low push-pull outputs
• Guaranteed reset output valid to VCC = 1V
• −40°C to +125°C junction temperature range
• 6-pin 1.6mm x 1.6mm x 0.5mm Thin DFN package
• 50% smaller version of
MAX823/MAX824/MAX825/ADM823/ADM824/ADM825
• 8x lower watchdog input current than competition
Applications
• Microprocessor systems
• Computers
• Intelligent instruments
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Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
February 4, 2013
Revision 1.0