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MCP121-240

Description
Micropower Voltage Detector
File Size270KB,27 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Download Datasheet View All

MCP121-240 Overview

Micropower Voltage Detector

MCP111/112
Micropower Voltage Detector
Features
• Ultra-low supply current: 1.75 µA (max.)
• Precision monitoring options of:
- 1.90V, 2.32V, 2.63V, 2.90V, 2.93V, 3.08V,
4.38V and 4.63V
• Resets microcontroller in a power-loss event
• Active-low V
OUT
pin:
-
MCP111
active-low, open-drain
-
MCP112
active-low, push-pull
• Available in SOT23-3, TO-92, SC-70 and
SOT-89-3 packages
• Temperature Range:
- Extended: -40°C to +125°C
(except
MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195
only)
• Pb-free devices
Package Types
3-Pin SOT23-3/SC-70
V
OUT
1
MCP111/112
3-Pin SOT-89
V
DD
3 V
DD
MCP111/112
1
V
OUT
2
3
V
DD
V
SS
V
SS
2
3-Pin TO-92
V
OUT
V
DD
V
SS
Applications
• Critical Microcontroller and Microprocessor
Power-Monitoring Applications
• Computers
• Intelligent Instruments
• Portable Battery-Powered Equipment
Block Diagram
V
DD
Comparator
+
Output
Driver
V
OUT
Description
The MCP111/112 are voltage-detecting devices
designed to keep a microcontroller in reset until the
system voltage has 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 the specified
threshold voltage level. Eight different trip voltages are
available.
Band Gap
Reference
V
SS
TABLE 1:
Device
DEVICE FEATURES
Output
Type
Pull-up Resistor
External
No
No
No
External
Internal (~95 kΩ)
Reset Delay
(typ)
No
No
120 ms
120 ms
120 ms
120 ms
Package Pin Out
(Pin # 1, 2, 3)
V
OUT
, V
SS
, V
DD
V
OUT
, V
SS
, V
DD
RST, V
DD
, V
SS
V
SS
, RST, V
DD
RST, V
DD
, V
SS
RST, V
DD
, V
SS
See
MCP102/103/121/131
Data Sheet
(DS21906)
See
MCP102/103/121/131
Data Sheet
(DS21906)
See
MCP102/103/121/131
Data Sheet
(DS21906)
See
MCP102/103/121/131
Data Sheet
(DS21906)
Comment
MCP111
MCP112
MCP102
MCP103
MCP121
MCP131
Open-drain
Push-pull
Push-pull
Push-pull
Open-drain
Open-Drain
©
2005 Microchip Technology Inc.
DS21889D-page 1
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