MCP102/103/121/131
Micropower Voltage Supervisors
Features:
General Description:
• Ultra-Low Supply Current: 1.75 µA
(steady-state maximum)
• Precision Monitoring Options of:
- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V and
4.63V
• Resets Microcontroller in a Power-Loss Event
• RST Pin (active-low):
- MCP121: Active-low, Open-drain
- MCP131: Active-low, Open-drain with Internal Pull-up Resistor
- MCP102 and MCP103: Active-low, Push-pull
• Reset Delay Timer (120 ms delay, typical)
• Available in SOT-23, TO-92 and SC70 Packages
• Temperature Range:
- Extended: -40°C to +125°C
(except MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195 only)
• Pb-free Devices
The MCP102/103/121/131 devices are voltage
supervisor devices designed to keep a microcontroller
in reset until the system voltage has reached and
stabilized at the proper level for reliable system
operation. Table 1 shows the available features for
these devices.
Package Types
RST 1
VDD 2
3 VSS
RST
VDD VSS
SOT-23/SC70
Applications:
VSS 1
MCP103
• Critical Microcontroller and Microprocessor
Power-monitoring Applications
• Computers
• Intelligent Instruments
• Portable Battery-powered Equipment
TO-92
MCP102/121/131
SOT-23/SC70
RST
3 VDD
2
Block Diagram
VDD
R (1)
Comparator
+
–
Reset
Delay
Circuit
Output
Driver
RST
Band Gap
Reference
VSS
2004-2014 Microchip Technology Inc.
Note:
MCP131 only
DS20001906D-page 1
