MCP120

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 lowRESET pin
• Open drain output
• Internal pull-up resistor (5 k) for MCP130
• HoldsRESET for 350 ms (typical)
•RESET to V_CC = 1.0V
• Accuracy of ±125 mV for 5V systems and ±75 mV for 3V systems over temperature
• 45 A typical operating current
• Temperature range: - Industrial (I): -40°C to +85°C




Pinout






Specifications

Parameter Name	Value
Manual Reset	No
Watchdog Timer	No
Typical Reset Pulse Width (ms)	350
Reset Type	Active Low
Typical Supply Current (uA)	45
Vcc Range Min (V)	1.0
Vcc Range Max (V)	5.5
Output	Open-Drain
Temp Range Min. (°C)	-40
Temp Range Max. (°C)	+85
Nominal Reset Voltage (V)	4.60, 4.50, 4.35, 4.25, 3.00, 2.85, 2.55

V_DD..............................................................................7.0V
All inputs and outputs w.r.t. V_SS ...........-0.6V to V_DD +1.0V
Storage temperature ........................... -65°C to +150°C
Ambient temp. with power applied ...... -65°C to +125°C
ESD protection on all pins ...................................... 2 kV
*Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

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.