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RT9801B

RichTek
Part Number RT9801B
Manufacturer RichTek
Description User Programmable Micro-Power Voltage Detectors
Published Mar 31, 2015
Detailed Description RT9801A/B User Programmable Micro-Power Voltage Detectors General Description The RT9801A/B is a micro-power voltage d...
Datasheet PDF File RT9801B PDF File

RT9801B
RT9801B

Overview
RT9801A/B User Programmable Micro-Power Voltage Detectors General Description The RT9801A/B 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 RT9801A/B 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 last for the whole period of Reset Active Time-out period.
RT9801A/B is N-Channel, open-drain output and provided in SOT-23-6 package.
Ordering Information RT9801 Package Type E : SOT-23-6 Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Note : Reset Threshold A : 2.
5V to 5V B : 1.
5V to 4V Richtek products are : ` RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area.
Features z User Programmable Threshold 1.
5V to 5V in 0.
1V Step with ±3% Accuracy z Low Supply Current 3μA z Quick Reset within 20μs z Built-in Recovery Delay 200ms z Low Functional Supply Voltage 0.
9V z Small SOT-23-6 Package z RoHS Compliant and 100% Lead (Pb)-Free Applications z Computers z Controllers z Intelligent Instruments z Critical μP and μC Power Monitoring z Portable/Battery-Powered Equipment Pin Configurations (TOP VIEW) VSET1 VSET2 VDD 654 23 VSET0 GN...


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