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MCP112 Datasheet

  • MCP112

  • Micropower Voltage Detector

  • 558.45KB

  • 26页

  • Microchip   Microchip

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MCP111/112
Micropower Voltage Detector
Features
鈥?Ultra-low supply current: 1.75 碌A (max.)
鈥?Precision monitoring options of:
- 1.90V, 2.32V, 2.63V, 2.90V, 2.93V, 3.08V,
4.38V and 4.63V
鈥?Resets microcontroller in a power-loss event
鈥?Active-low V
OUT
pin:
-
MCP111
active-low, open-drain
-
MCP112
active-low, push-pull
鈥?Available in SOT23-3, TO-92 and SC70 packages
鈥?Temperature Range:
- Extended: 鈥?0掳C to +125掳C
(except
MCP1XX-195)
- Industrial: 鈥?0掳C to +85掳C (MCP1XX-195
only)
Description
The MCP111/112 are voltage-detecting devices
designed to keep a microcontroller in reset until the
system voltage has reached, and stabilized, at the
appropriate level for reliable system operation. These
devices also operate as protection from brown-out
conditions when the system supply voltage drops
below a safe operating level. The MCP111 and
MCP112 are available in eight different trip voltages.
The MCP111 has an open-drain output with an active-
low pin (V
OUT
). This device will assert V
OUT
when the
voltage on the V
DD
pin is below the trip-point voltage.
The MCP112 has a push-pull output and will assert an
active-low signal (V
OUT
pin) when the voltage on the
V
DD
pin is below the trip-point voltage.
During operation, the output (V
OUT
) remains at a logic-
high as long as V
DD
is greater than the specified
threshold voltage. When V
DD
falls below the voltage
trip point, V
OUT
is driven low.
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Critical 碌C and 碌P Power-monitoring Applications
Computers
Intelligent Instruments
Portable Battery-Powered Equipment
Package Types
SOT23-3/SC-70
Block Diagram
V
DD
V
OUT
1
MCP111/112
3
V
DD
Comparator
+
鈥?/div>
Output
Driver
V
OUT
V
SS
2
TO-92
Band Gap
Reference
V
OUT
V
DD
V
SS
V
SS
铮?/div>
2004 Microchip Technology Inc.
DS21889B-page 1

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