MCP130

MCP120/130 Microcontroller Supervisory Circuit with Open Drain Output 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 kΩ) for MCP130 Holds RESET for 350 ms (typical) RESET to VCC = 1.0V Accuracy of ±125 mV for 5V systems and ±75 mV for 3V systems over temperature 45 µA typical operating current Temperature range: - Industrial (I): -40°C to +85°C PACKAGES TO-92 with ‘D’ Bondout TO-92 WITH ‘F’ BONDOUT RST VSS VDD VSS VDD RST MCP120 MCP130 MCP130 TO-92 with ‘G’ Bondout TO-92 with ‘H’ Bondout DESCRIPTION The Microchip Technology Inc. MCP120/130 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. Both devices are available with a choice of seven different trip voltages and both have open drain outputs. The MCP130 has an internal 5 kΩ pullup resistor. Both devices have active low RESET pins. The MCP120/130 will assert the RESET signal whenever the voltage on the VDD pin is below the trip-point voltage. VDD VSS RST VDD MCP120 VSS RST MCP120 MCP130 SOT-23-3 150mil SOIC RST VDD NC VSS 1 2 3 4 8 7 6 5 NC NC NC...