MCP131 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Voltage Supervisor / Reset Generator |
| Number of Pins | 3 (SOT-23-3 or TO-92) |
| Supply Voltage Range | 1.0V to 5.5V |
| Reset Threshold Voltage Options | 2.63V, 2.93V, 3.08V, 4.38V, 4.63V (typical) |
| Reset Output Type | Active-low, open-drain or push-pull |
| Reset Timeout Period | 280ms typical |
| Quiescent Current | 1 µA typical |
| Operating Temperature Range | -40°C to +85°C |
| Accuracy | ±1.5% over temperature |
| Primary Functions | Power-on reset, brown-out detection, voltage monitoring |
| Package Options | SOT-23-3, TO-92, SC-70 |
| Mounting Style | Surface Mount / Through Hole |
| Typical Applications | Microcontroller reset, battery-powered systems, automotive |
| RoHS Compliant | Yes |
| ESD Rating | 2 kV (HBM) |
Frequently Asked Questions - MCP131 Microchip
What is the MCP131 used for?
The MCP131 is a voltage supervisor or reset generator that monitors the supply voltage and asserts a reset signal when the voltage drops below a preset threshold. It ensures reliable operation of microcontrollers and other digital ICs during power-up, power-down, and brown-out conditions.
How is the reset threshold selected?
The reset threshold voltage is factory-programmed. For the MCP131, standard options include 2.63V, 2.93V, 3.08V, 4.38V, and 4.63V. The specific threshold is indicated by a suffix in the part number (e.g., MCP131-270 for 2.70V).
What is the reset timeout period?
The MCP131 has a built-in 280ms (typical) reset timeout period after the supply voltage rises above the threshold. This ensures the system stabilizes before the reset is released.
Does the MCP131 have an open-drain or push-pull output?
The output type depends on the variant. The MCP131 typically features an active-low open-drain output ("-D" suffix) or push-pull ("-P"). Always check the datasheet for your exact model.
What is the supply voltage range?
The MCP131 operates from 1.0V to 5.5V, making it suitable for low-voltage applications including battery-powered devices.
Can the MCP131 be used with a 5V system?
Yes, the MCP131 can monitor a 5V supply. For example, choose a threshold like 4.63V to detect undervoltage conditions in a 5V system.
What is the quiescent current consumption?
The MCP131 has a very low quiescent current of typically 1 µA, ideal for power-sensitive applications.
How do I connect the MCP131?
Connect VDD to the monitored supply, GND to ground, and RST (or /RESET) to the microcontroller's reset input. For open-drain output, add a pull-up resistor (e.g., 10 kΩ) to VDD.
What packages are available?
The MCP131 is offered in SOT-23-3, TO-92, and SC-70 packages. The pinout may vary, so refer to the datasheet for your specific package.
Is the MCP131 RoHS compliant?
Yes, Microchip produces the MCP131 as RoHS-compliant and lead-free, suitable for environmentally conscious designs.
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Product information
Brand : Microchip
Model : MCP131
Category : Uncategorized