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MIC2755

Micrel Semiconductor
Part Number MIC2755
Manufacturer Micrel Semiconductor
Description Battery System Supervisor Preliminary Information
Published Mar 26, 2005
Detailed Description MIC2755 Micrel MIC2755 Battery System Supervisor Preliminary Information General Description The MIC2755 is composed ...
Datasheet PDF File MIC2755 PDF File

MIC2755
MIC2755

Overview
MIC2755 Micrel MIC2755 Battery System Supervisor Preliminary Information General Description The MIC2755 is composed of multiple comparators, a reset pulse generator, and logic.
It is designed for monitoring the battery supply of portable digital systems, including PDAs and pagers.
The MIC2755 detects three different battery states: battery OK, low battery, and dead battery.
The reset (/RST) output is asserted for at least 700ms when a fresh battery is inserted.
The nonmaskable interrupt output (/NMI) is asserted when the battery voltage is below the NTH threshold, indicating that high-power system operations should not occur.
If and when battery voltage falls below the power-off threshold (PTH), the reset output is asserted and latched, inhibiting system operation until the battery is replaced or recharged.
All three voltage thresholds are set using external resistors.
A manual reset function can be implemented by connecting a switch directly to the power on reset/manual reset [RTH...


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