Smart Multi-Voltage Detector

RT9824C

The RT9824C 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 RT9824C 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 60ms 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 RT9824C is available in the TSOT-23-8 package.

Applications

LCD TV or Monitors
Consumer Electronic Products
System Voltage Detector

Key Spec.

	RT9824C
Status	Active
Vin (min) (V)	2.97
Vin (max) (V)	5.94
VTH (min) (V)	1
VTH (max) (V)	4.32
Accuracy (±%)	2
Reset Time-out Period (typ) (ms)	60
Reset Delay Time (typ) (ms)	0.02
Package Type	TSOT-28

Features

Capable of Monitoring Three Inputs Precisely
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)
Accuracy : ±2%
RESET (Open Drain Output Active Low)
Built-in Recovery Delay 60ms
CTR (Open Drain Output Active Low)
Manual Reset (MR) Function
TSOT-23-8 Package
RoHS Compliant and Halogen Free

Application Notes

Richtek Product Selection Guide [Jan., 2025]

Datasheet

DS9824C-00.pdf

Datasheet

DS9824C-00.pdf

RT9824CGJ8

Package Type:TSOT-28

Sample Buy