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Precision Triple Supply Supervisor Provides Early Power-Fail Detection
MILPITAS, CA - October 11, 2010 - Linear Technology Corporation
introduces the LTC2911 three-channel supply
monitor with power-fail warning for low voltage systems down to
0.5V. In certain applications, monitoring the main input supply is
just as important as monitoring the intermediate bus voltages in
order to provide the host an early warning of supply failure and
signal shutdown procedures. The LTC2911 offers a power-fail input
and output to support this function, in addition to three voltage
inputs, with 1.5% threshold accuracy over the entire operating
temperature range.
The LTC2911 is suitable for a wide variety of applications,
including network servers, desktop or notebook computers, and
automotive or industrial electronics. The first channel monitors
3.3V, the second channel monitors pre-set values between 1.2V to 5V
and the third channel is adjustable down to 0.5V. This versatility
allows the LTC2911 to be conveniently ported to similar designs
with differing supply voltages. Glitch filtering ensures reliable
reset operation by minimizing false triggers. The reset timeout
period can be selected internally (200ms) to minimize component
count, or externally adjusted. The same reset timer pin can also be
used to latch the reset pin status and override reset operation,
which is useful in margining applications, where it is common to
test systems at supply voltages that might otherwise cause the
system to reset.
The LTC2911 is available in a variety of voltage options, depending
on which three voltages need to be monitored. Commercial and
industrial versions offer different operating temperature ranges,
from 0°C to 70°C and -40°C to 85°C, respectively. The LTC2911 is
available today and offered in 8-lead TSOT-23 and 3mm x 2mm DFN
packages. Pricing starts at $1.52 each in 1,000 piece quantities.
Please visit www.linear.com/2911 for more
product selection and information.
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Summary of Features: LTC2911
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Compact Triple Supply Monitoring with |
