MCP120 Series

Microcontroller Supervisory Circuit with Open Drain Output

Catalog

Microcontroller Supervisory Circuit with Open Drain Output

Part	Mounting Type	Number of Voltages Monitored	Reset	Type	Operating Temperature [Max]	Operating Temperature [Min]	Reset Timeout	Output	Supplier Device Package	Voltage - Threshold	Package / Case	Package / Case [y]	Package / Case [x]
Microchip Technology MCP120-315HI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	3.075 V	TO-226-3 TO-92-3
Microchip Technology MCP120-485HI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	4.725 V	TO-226-3 TO-92-3
Microchip Technology MCP120T-300I/TT	Surface Mount	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	SOT-23-3	2.925 V	SC-59 SOT-23-3 TO-236-3
Microchip Technology MCP120-460DI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	4.475 V	TO-226-3 TO-92-3
Microchip Technology MCP120-450HI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	4.375 V	TO-226-3 TO-92-3
Microchip Technology MCP120-450DI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	4.375 V	TO-226-3 TO-92-3
Microchip Technology MCP120-460HI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	4.475 V	TO-226-3 TO-92-3
Microchip Technology MCP120-485I/SN	Surface Mount	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	8-SOIC	4.725 V	8-SOIC	3.9 mm	0.154 in
Microchip Technology MCP120-270DI/TO	Through Hole	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	TO-92-3	2.625 V	TO-226-3 TO-92-3
Microchip Technology MCP120T-475I/SN	Surface Mount	1	Active Low	Simple Reset/Power-On Reset	85 °C	-40 °C	150 ms	Open Drain or Open Collector	8-SOIC	4.625 V	8-SOIC	3.9 mm	0.154 in

Catalog

Microcontroller Supervisory Circuit with Open Drain Output

Key Features

• * Holds microcontroller in reset until supply voltage reaches stable operating level

• * Resets microcontroller during power loss

• * Precision monitoring of 3V, 3.3V and 5V systems

• * 7 voltage trip points available

• * Active low RESET pin

• * Open drain output

• * Internal pull-up resistor (5 kohm) for MCP130

• * Holds RESET for 35kΩ (typical)

• * RESET to VCC = 1.0V

• * Accuracy of +(-)125mV for 5V systems and +(-)75mV for 3V systems over temp

• * 45uA typical operating current

• * Industrial (I): -40C to +85C

Description

The MCP120 is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. It also operates as protection from brown-out conditions when the supply voltage drops below a safe operating level. MCP120 features an open drain output, and active low reset and is available in a choice of seven different trip voltages. It operates over the extended industrial temperature range (-40°C/+85°C). MCP120 is available in a TO-92, SOT23-3, and SN packages.