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LX7001

Microsemi Corporation
Part Number LX7001
Manufacturer Microsemi Corporation
Description TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT
Published Mar 30, 2005
Detailed Description LX7001 T RANSIENT I MMUNE U NDERVOLTAGE S ENSING C IRCUIT T H E I N F I N I T E P O W E R O F I N N O VA T I O N ...
Datasheet PDF File LX7001 PDF File

LX7001
LX7001


Overview
LX7001 T RANSIENT I MMUNE U NDERVOLTAGE S ENSING C IRCUIT T H E I N F I N I T E P O W E R O F I N N O VA T I O N P R O D U C T I O N D A T A S H E E T DESCRIPTION The LX7001 is an improved undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems.
Today's complex miniaturized systems present difficult challanges to the system designer such as overcoming spurious noise problems.
The LX7001 is optimized for systems that must be tolerant of high-speed power supply glitches caused by high-speed logic transitions and similar switching phenomena.
The LX7001 offers a unique stage that couples glitch immunity with a micropower, ultrastable band-gap reference for precision sensing of undervoltage conditions.
It offers the designer an economical, space-efficient solution for low supply voltage detection when used in combination with a single pull-up resistor.
Adding one capacitor offers the functionality of a programmable delay time after power returns.
Additionally, the LX7001 offers excellent temperature stability.
A high-quality trimmed voltage reference and bias circuit permit very accurate and repeatable undervoltage sensing.
The remaining blocks consist of a comparator with hysteresis, high current clamping diode and open collector output stage capable of sinking up to 60mA.
The LX7001's RESET output is specified to be fully functional at VIN=1V.
K E Y F E AT U R E S s Fully Characterized, Transient Immune Input Stage (See Product Highlight) s Monitors 5V Supplies (VTRIP=4.
6V Typ.
) s Outputs Fully Defined At VCC=1V s Ultra-Low Supply Current (500µA Max.
Over Temp) ! Temperature Compensated ICC For Extremely Stable Current Consumption ! µP Reset Function Programmable With 1 External Resistor And Capacitor ! Comparator Hysteresis Prevents Output Oscillation ! Electrically Compatible With Motorola MC34064 ! Pin-to-Pin Compatible With Motorola MC34064/MC34164 NOTE: For current data & package dimensions, ...


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