RT9802

Preliminary RT9802 User Programmable Micro-Power Voltage Detectors General Description www.datasheet4u.com Features z The RT9802 is a micro-power voltage detector supervising the power supply voltage level for microprocessors (μP) or digital systems. It provides user programmable threshold levels with 0.1V step ranging from 1.5V to 5V, which covers most digital applications. It features low supply current of 3μA. Selection of VTH is easily achieved through 3 pins connected to GND, VDD or floating for different threshold voltage settings. Two versions of threshold voltages, 1.5V to 4V and 2.5V to 5V, which are programmed in factory are offered by customer demands. The RT9802 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal will last the whole period before VDD recovering. Reset signal will release after VDD is recovered and lasts for the whole period of Reset Active Time-out period. RT9802 is CMOS, active-low output and provided in SOT-23-6 package. z z z z z z User Programmable Threshold 1.5V to 5V in 0.1V Step with ± 3% Accuracy Low Supply Current 3μA Quick Reset within 20μs Built-in Recovery Delay 200ms Low Functional Supply Voltage 0.9V Small SOT-23-6 Package RoHS Compliant and 100% Lead (Pb)-Free Applications z z z z z Computers Controllers Intelligent Instruments Critical μP and μC Power Monitoring Portable/Battery-Powered Equipment Marking Information For marking informa...