MCP111T-270I/TT Microchip Technology, MCP111T-270I/TT Datasheet - Page 12
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MCP111T-270I/TT
Manufacturer Part Number
MCP111T-270I/TT
Description
Supervisory Circuits Open Drain
Manufacturer
Microchip Technology
Datasheet
1.MCP111T-315ILB.pdf
(22 pages)
Specifications of MCP111T-270I/TT
Product Category
Supervisory Circuits
Rohs
yes
Number Of Voltages Monitored
1
Monitored Voltage
2.63 V
Undervoltage Threshold
2.591 V
Overvoltage Threshold
2.67 V
Manual Reset
Not Resettable
Watchdog
No Watchdog
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23-3
Minimum Operating Temperature
- 40 C
Factory Pack Quantity
3000
Supply Current (typ)
1.75 uA
Supply Voltage - Min
1 V
MCP111/112
4.2
The minimum pulse width (time) required to cause a
reset may be an important criteria in the implementa-
tion of a POR circuit. This time is referred to as
transient duration and is the amount of time needed for
these supervisory devices to respond to a drop in V
The transient duration time is dependant on the magni-
tude of V
duration decreases with increases in V
Figure 4-3 shows a typical transient duration vs. reset
comparator overdrive for which the MCP111/112 will
not generate a reset pulse. It shows that the farther
below the trip point the transient pulse goes, the
duration of the pulse required to cause a reset gets
shorter. Figure 2-18 shows the transient response
characteristics for the MCP111/112.
A 0.1 µF bypass cap mounted as close as possible to
the V
(refer to Figure 4-1).
FIGURE 4-3:
Transient Duration Waveform.
DS21889B-page 12
5V
0V
DD
Negative Going V
TRIP
pin provides additional transient immunity
– V
DD
t
TRANS
. Generally speaking, the transient
Time (µs)
Example of Typical
V
TRIP(MIN)
DD
Transients
- V
TRIP
DD
V
V
– V
TRIP(MAX)
TRIP(MIN)
DD
.
DD
.
4.3
The time-out period (t
device remains in the reset condition. This is affected
by both V
Figures 2-22,
response for different V
Effect of Temperature on Time-out
Period (t
DD
and temperature. The graph shown in
2-23 and
RPU
RPU
DD
2004 Microchip Technology Inc.
)
) determines how long the
values and temperatures.
2-24 show the typical