MCP111/112
Micropower Voltage Detector
Features
Package Types
• Ultra-Low Supply Current: 1.75 µA (Max.)
• Precision Monitoring Options Of:
3-Pin SOT23-3/SC-70
3-Pin SOT-89
VDD
- 1.90V, 2.32V, 2.63V, 2.90V, 2.93V, 3.08V,
4.38V and 4.63V
VOUT
1
2
• Resets Microcontroller in a Power-Loss Event
• Active-Low VOUT Pin:
VDD
3
MCP111/112
- MCP111 Active-Low, Open-Drain
- MCP112 Active-Low, Push-Pull
VSS
1
2
3
VOUT
V
DD VSS
• Available in SOT23-3, TO-92, SC-70 and
SOT-89-3 Packages
3-Pin TO-92
• Temperature Range:
- Extended: -40°C to +125°C
(except MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195 Only)
VOUT
VSS
VDD
• Pb-Free Devices
Applications
Block Diagram
• Critical Microcontroller and Microprocessor
Power-Monitoring Applications
V
DD
• Computers
• Intelligent Instruments
• Portable Battery-Powered Equipment
Comparator
V
OUT
+
–
Output
Driver
General 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
DEVICE FEATURES
Output
SOT-23/SC70
Package Pin Out
(Pin # 1, 2, 3)
ResetDelay
Device
Comment
(typ.)
Type
Pull-up Resistor
MCP111
MCP112
MCP102
Open-drain
Push-pull
Push-pull
External
No
No
No
VOUT, VSS, VDD
VOUT, VSS, VDD
RST, VDD, VSS
No
120 ms
See MCP102/103/121/131 Data Sheet
(DS20001906)
MCP103
Push-pull
No
120 ms
120 ms
120 ms
VSS, RST, VDD
RST, VDD, VSS
RST, VDD, VSS
See MCP102/103/121/131 Data Sheet
(DS20001906)
MCP121 Open-drain
MCP131 Open-Drain
External
See MCP102/103/121/131 Data Sheet
(DS20001906)
Internal (~95 k)
See MCP102/103/121/131 Data Sheet
(DS20001906)
2004-2016 Microchip Technology Inc.
DS20001889F-page 1