Overview
The TPS3820-33DBVTG4, produced by Texas Instruments, is a voltage monitor with a watchdog timer designed for circuit initialization and timing supervision in various electronic systems. This device is part of the TPS382x family, which is primarily used in DSP and processor-based systems. It provides a power-on reset generator and supply voltage supervision, ensuring proper system reset and monitoring the supply voltage to maintain system integrity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.1 V to 5.5 V | V |
| Threshold Voltage | 2.93 V | V |
| Reset Type | Active Low | |
| Delay Time | 15 ms to 25 ms | ms |
| Watchdog Time Out | 112 ms to 300 ms | ms |
| Supply Current | 15 μA (typical) | μA |
| Operating Temperature | −40°C to 85°C | °C |
| Package | 5-pin SOT-23 | |
| RoHS Compliance | Yes |
Key Features
- Power-on reset generator with a fixed delay time of 25 ms
- Manual reset input
- Reset output available in active-low configuration
- Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, 5 V
- Watchdog timer with time-out options
- No external components required
- Low supply current of 15 μA (typical)
- Compact 5-pin SOT-23 package
- Operating temperature range: −40°C to 85°C
Applications
- DSPs, microcontrollers, or microprocessors
- Industrial equipment
- Programmable controls
- Automotive systems
- Portable and battery-powered equipment
- Intelligent instruments
- Wireless communications systems
- Notebook and desktop computers
Q & A
- What is the primary function of the TPS3820-33DBVTG4?
The primary function is to provide circuit initialization and timing supervision, including power-on reset and supply voltage monitoring.
- What are the available reset output configurations for the TPS382x family?
The reset output is available in active-low, active-high, and open-drain configurations, depending on the specific device model.
- What is the typical supply current of the TPS3820-33DBVTG4?
The typical supply current is 15 μA.
- What is the operating temperature range of the TPS3820-33DBVTG4?
The operating temperature range is −40°C to 85°C.
- Does the TPS3820-33DBVTG4 require external components for operation?
No, the device does not require external components for operation.
- What is the watchdog time-out period for the TPS3820-33DBVTG4?
The watchdog time-out period ranges from 112 ms to 300 ms.
- What package type is the TPS3820-33DBVTG4 available in?
The device is available in a 5-pin SOT-23 package.
- Is the TPS3820-33DBVTG4 RoHS compliant?
Yes, the device is RoHS compliant.
- What are some common applications of the TPS3820-33DBVTG4?
Common applications include DSPs, microcontrollers, industrial equipment, automotive systems, and portable electronics.
- How does the watchdog timer function in the TPS3820-33DBVTG4?
The watchdog timer issues a reset signal if the WDI input is not periodically triggered within the specified time-out interval.
