Overview
The TPS3828-33DBVT is a voltage monitor with a watchdog timer produced by Texas Instruments. It is part of the TPS382x family of supervisors, designed to provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. This component ensures proper system reset by monitoring the supply voltage and asserting a reset signal when the voltage drops below a specified threshold. The TPS3828-33DBVT is packaged in a 5-pin SOT-23 package and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 5-pin SOT-23 (DBV) |
| Operating Temperature Range | -40°C to 85°C |
| Threshold Voltage | 2.93V |
| Supply Voltage Min | 1.1V |
| Supply Voltage Max | 5.5V |
| Reset Type | Active-Low, Open-Drain |
| Delay Time | 200 ms (fixed) |
| Watchdog Timer | 1.6 s |
| Supply Current | 15 µA (typical) |
| RoHS Compliance | Yes |
Key Features
- Power-on reset generator with a fixed delay time of 200 ms
- Manual reset input
- Reset output available in active-low and open-drain configurations
- Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, 5 V
- Watchdog timer with 1.6 s timeout option
- Low supply current of 15 µA (typical)
- No external components required
- Fixed-sense threshold voltage set by an internal voltage divider
Applications
The TPS3828-33DBVT is suitable for various applications, including:
- DSP and processor-based systems
- Notebook and desktop computers
- Embedded systems requiring power-on reset and watchdog timer functions
- Industrial control systems
- Automotive systems requiring robust voltage monitoring and reset capabilities
Q & A
- What is the primary function of the TPS3828-33DBVT?
The primary function of the TPS3828-33DBVT is to provide circuit initialization and timing supervision, including power-on reset and watchdog timer functions, for DSP and processor-based systems.
- What is the package type of the TPS3828-33DBVT?
The TPS3828-33DBVT is packaged in a 5-pin SOT-23 (DBV) package.
- What is the operating temperature range of the TPS3828-33DBVT?
The operating temperature range is -40°C to 85°C.
- What is the threshold voltage for the TPS3828-33DBVT?
The threshold voltage is 2.93V.
- Does the TPS3828-33DBVT require external components for operation?
No, the TPS3828-33DBVT does not require external components for operation.
- What are the available reset output configurations for the TPS3828-33DBVT?
The reset output is available in active-low and open-drain configurations.
- What is the typical supply current of the TPS3828-33DBVT?
The typical supply current is 15 µA.
- Is the TPS3828-33DBVT RoHS compliant?
Yes, the TPS3828-33DBVT is RoHS compliant.
- What is the watchdog timer timeout option for the TPS3828-33DBVT?
The watchdog timer timeout option is 1.6 seconds.
- What are some common applications for the TPS3828-33DBVT?
Common applications include DSP and processor-based systems, notebook and desktop computers, embedded systems, industrial control systems, and automotive systems.
