RT9824 Datasheet, PDF (1/8 Pages) Richtek Technology Corporation – Smart Multi-Voltage Detector

RT9824
Smart Multi-Voltage Detector
General Description
The RT9824 is an integrated smart multi-voltage detector
supervising three power supply voltage levels including
5V, 5.4V and additional 3.3V, 12V or other voltage which
can be determined by external divided resisters.
The RT9824 performs supervisory function by sending out
RESET and CTR signals whenever the monitored voltages
fall below 80% of voltage levels. The RESET and CTR
signals will last the whole period before VCC recovering.
Once the supervising voltages are recovered to higher
than 80% of the voltage levels, the RESET and CTR signal
will be released after 300ms delay time.
MR (Manual Reset) controls CTR signal during three
monitored power supply voltages at normal voltage levels.
When MR signal is in logic high, the CTR signal will be
pulled low immediately. However the RESET will not be
interfered and will be kept at high level.
The RT9824 is available in the TSOT-23-8 package.
Features
z Capable of Monitoring Three Inputs Precisely
z Detection Threshold Voltages
` VCC Connect to 5V or 3.3V Standby Power
` V5 : 5V x 80%
` V54 : 5.4V x 80%
` VADJ : 1V (Using Resistor Divider)
z Accuracy : ±2%
z RESET (Open Drain Output Active Low)
z Built-in Recovery Delay 300ms
z CTR (Open Drain Output Active Low)
z Manual Reset (MR) Function
z TSOT-23-8 Package
z RoHS Compliant and Halogen Free
Applications
z LCD TV or Monitors
z Consumer Electronic Products
z System Voltage Detector
Ordering Information
RT9824
Package Type
J8 : TSOT-23-8
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
AF=DNN
AF= : Product Code
DNN : Date Code
Pin Configurations
(TOP VIEW)
87 6 5
2 34
TSOT-23-8
DS9824-01 April 2011
www.richtek.com
1