RT9823 Datasheet, PDF (1/7 Pages) Richtek Technology Corporation – Smart Multi-Voltage Detector

RT9823
Smart Multi-Voltage Detector
General Description
The RT9823 is an integrated smart multi voltage detector
supervising two power supply voltage levels including 5V,
and another voltage (such as 3.3V or 12V) , which can be
set via an external resistive voltage divider.
The RT9823 performs supervisory function by sending out
a CTR signal whenever the monitored voltages fall below
80% of the voltage levels. The CTR signal will last the
whole period before VCC recovers. Once the supervising
voltages are recovered to higher than 80% of the voltage
levels, the CTR signal will be released after a 300ms delay
time.
MR (Manual Reset) controls the CTR signal when the
two monitored power supply voltages are at normal voltage
levels. When the MR signal is in logic high, the CTR signal
will be pulled low immediately.
The RT9823 is available in a SOT-23-6 package.
Ordering Information
RT9823
Package Type
E : SOT-23-6
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
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
ES=DNN
ES= : Product Code
DNN : Date Code
Features
z Capable of Monitoring Two Inputs Precisely
z VCC Connect to 5V or 3.3V Standby Power
z Detection Threshold Voltages
` V5 : 5V x 80%
` VADJ : 1V (Using Resistor Divider)
z Accuracy : ±2%
z CTR (Open Drain Output Active Low)
z Built-in Recovery Delay 300ms
z Manual CTR (MR) Function
z SOT-23-6 Package
z RoHS Compliant and Halogen Free
Applications
z LCD TV or Monitors
z Consumer Electronic Products
z System Voltage Detector
Pin Configurations
(TOP VIEW)
6
5
4
2
3
SOT-23-6
DS9823-02 June 2011
www.richtek.com
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