Overview
The TPS3823-33DBVT is a voltage supervisor (reset IC) produced by Texas Instruments. It is part of the TPS382x family, which provides circuit initialization and timing supervision primarily for DSP and processor-based systems. This component ensures proper system reset and monitoring of the supply voltage, making it essential for various electronic systems.
During power-on, the RESET output asserts when the supply voltage VDD becomes greater than 1.1 V. The supply voltage supervisor then monitors VDD and keeps the RESET output active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure a proper system reset.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23 (DBV) with 5 pins |
| Operating Temperature Range | −40°C to 85°C (−40°C to 125°C for TPS3823A-33) |
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V |
| Reset Output Type | Active-low, active-high, and open drain (depending on the specific model) |
| Watchdog Timer | 1.6 seconds (TPS3823, TPS3824, and TPS3828) |
| Power-on Reset Delay Time | 200 ms (TPS3823, TPS3824, TPS3825, and TPS3828) |
| Supply Current | 15 µA (typical) |
| Manual Reset Input | Available (TPS3820, TPS3823, TPS3825, and TPS3828) |
Key Features
- Power-on reset generator with a fixed delay time of 200 ms.
- Manual reset input for manual system reset.
- Reset output available in active-low, active-high, and open drain configurations.
- Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, 5 V.
- Watchdog timer with a 1.6-second timeout option.
- Low supply current of 15 µA (typical).
- Compact 5-pin SOT-23 package.
- Operating temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33).
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 TPS3823-33DBVT?
The primary function is to provide circuit initialization and timing supervision, ensuring proper system reset and monitoring of the supply voltage.
- What is the package type and pin count of the TPS3823-33DBVT?
The package type is SOT-23 (DBV) with 5 pins.
- What is the operating temperature range of the TPS3823-33DBVT?
The operating temperature range is −40°C to 85°C (−40°C to 125°C for TPS3823A-33).
- What are the available reset output types for the TPS3823-33DBVT?
The reset output is available in active-low, active-high, and open drain configurations.
- Does the TPS3823-33DBVT have a watchdog timer?
- What is the typical supply current of the TPS3823-33DBVT?
The typical supply current is 15 µA.
- Is manual reset input available on the TPS3823-33DBVT?
- What are the common applications of the TPS3823-33DBVT?
- Does the TPS3823-33DBVT require external components for operation?
- What is the power-on reset delay time for the TPS3823-33DBVT?
The power-on reset delay time is 200 ms.
