Overview
The CAT823YTDI-GT3 is a system supervisory voltage reset IC produced by onsemi. This device is designed to provide basic reset and monitoring functions for electronic systems. It monitors the system voltage and maintains a reset output until the voltage reaches the specified trip value, ensuring the system operates correctly even during power failures or brownout conditions.
The CAT823YTDI-GT3 features a manual reset input, a watchdog timer, and accurate under-voltage system monitoring, making it a reliable component for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage (VCC) | 1.2 | - | 5.5 | V |
| Reset Threshold (VRST) | 2.19 | - | - | V |
| Supply Current (ICC) | 4 | 12 | - | μA |
| Operating Ambient Temperature | -40 | - | 85 | °C |
| Reset Timeout | 140 | - | - | ms |
| Watchdog Timeout | 1.12 | - | - | s |
| Package | - | - | - | TSOT-23-5 |
| Lead Free Status / RoHS Status | - | - | - | Lead free / RoHS Compliant |
Key Features
- Automatically Restarts Microprocessor after Power Failure: The device ensures the microprocessor is reset correctly after a power failure or brownout condition.
- Manual Reset Input: Allows for external override of the reset outputs using a pushbutton or processor signal.
- Accurate Under Voltage System Monitoring: Monitors the system voltage and maintains the reset output until the voltage reaches the specified trip value.
- Watchdog Timer: Forces a reset if the watchdog input does not change state within the specified timeout period.
- Compact Form Factor: Available in a TSOT-23-5 package, making it suitable for space-constrained designs.
- Low Power Consumption: Designed to operate with low supply current, making it energy-efficient.
- High Precision Monitoring: Provides accurate voltage threshold monitoring essential for reliable system operation.
Applications
- Consumer Electronics: Widely used in various consumer electronic devices due to its reliability and compact form factor.
- Automotive Systems: Integral in automotive systems where robust and reliable voltage monitoring is crucial.
- Industrial Systems: Suitable for industrial applications requiring high precision and reliable operation over a wide temperature range.
- Computing and Communication Devices: Essential component in computing and communication devices to ensure consistent and reliable operation.
Q & A
- What is the primary function of the CAT823YTDI-GT3?
The primary function of the CAT823YTDI-GT3 is to provide system supervisory voltage reset and monitoring functions for electronic systems.
- What is the reset threshold voltage for the CAT823YTDI-GT3?
The reset threshold voltage for the CAT823YTDI-GT3 is 2.19 V.
- What is the minimum reset timeout for the CAT823YTDI-GT3?
The minimum reset timeout for the CAT823YTDI-GT3 is 140 ms.
- Does the CAT823YTDI-GT3 have a watchdog timer function?
Yes, the CAT823YTDI-GT3 includes a watchdog timer function that forces a reset if the watchdog input does not change state within the specified timeout period.
- What is the operating temperature range for the CAT823YTDI-GT3?
The operating temperature range for the CAT823YTDI-GT3 is -40°C to 85°C.
- What package type is the CAT823YTDI-GT3 available in?
The CAT823YTDI-GT3 is available in a TSOT-23-5 package.
- Is the CAT823YTDI-GT3 RoHS compliant?
Yes, the CAT823YTDI-GT3 is lead-free and RoHS compliant.
- Can the watchdog timer be disabled on the CAT823YTDI-GT3?
Yes, the watchdog timer can be disabled by floating (or tri-stating) the WDI input.
- How does the manual reset input work on the CAT823YTDI-GT3?
The manual reset input can be used to initiate a reset by pulling the MR input low. This input is internally pulled up by a 52 kΩ resistor and is debounced and timed to generate a reset signal of at least 140 ms.
- What are some common applications for the CAT823YTDI-GT3?
The CAT823YTDI-GT3 is commonly used in consumer electronics, automotive systems, industrial systems, and computing and communication devices.
