SP730 Datasheet | Sipex

® Microprocessor Supervisory Circuit with Pull Up Resistor Features - Holds Microcontroller in Reset - Reset Microcontroller during power loss - 4.375 Voltage Trip Point - Active Low RESET Pin - Internal Pull-up Resistor - Holds RESET for 350ms (typical) - RESET valid down to VDD1.0V - 45µA Typical Operating Current - Offered in a 3 Pin SOT-23 Package APPLICATIONS - Portable Electronic Devices - Electrical Power Meter - puter System Board - Modem 3 Pin SOT-23 RESET VDD Now Available in Lead Free Packaging DESCRIPTION The SP730 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. The SP730 has an internal 5k pull-up resistor. The device has an active low RESET pin and will assert the RESET signal whenever the voltage on the VDD pin is below the trip-point voltage. The part is available in a small 3 pin SOT-23 package. Contact factory for other trip voltage options. TYPICAL APPLICATION CIRCUIT VDD Microcontroller VDD GND RESET Bypass Capacitor MCLR or RESET GND Date: 6/14/04 SP730 Microprocessor Supervisory Circuit © Copyright 2004 Sipex...