Overview
The TPS3823-33DBVRG4, produced by Texas Instruments, is a voltage supervisor IC designed primarily for circuit initialization and timing supervision in DSP and processor-based systems. This component is part of the TPS382x family, which offers a range of features to ensure proper system reset and monitoring. During power-on, the RESET output asserts when the supply voltage (VDD) exceeds 1.1 V and remains active low until VDD rises above the threshold voltage. An internal timer ensures a proper reset delay, and the device also includes a watchdog timer for additional system supervision.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 5 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V | V |
| Power-on Reset Delay Time | 200 ms (TPS3823), 25 ms (TPS3820) | ms |
| Watchdog Timer Timeout | 1.6 s (TPS3823, TPS3824, TPS3828) | s |
| Supply Current (Typical) | 15 μA | μA |
| Reset Output Type | Active-low, Active-high, Open Drain | - |
| Manual Reset Input | Yes (TPS3820, TPS3823, TPS3825, TPS3828) | - |
Key Features
- Power-on reset generator with a fixed delay time of 200 ms (TPS3823) or 25 ms (TPS3820)
- Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
- 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 timeout options of 200 ms and 1.6 s
- Low supply current of 15 μA (typical)
- Compact 5-pin SOT-23 package
- Operating temperature range: -40°C to 85°C (or -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 TPS3823-33DBVRG4?
The primary function is to provide circuit initialization and timing supervision, particularly for DSP and processor-based systems.
- What are the available reset output types for the TPS3823?
The reset output is available in active-low, active-high, and open drain configurations.
- What is the typical supply current of the TPS3823?
The typical supply current is 15 μA.
- What are the watchdog timer timeout options for the TPS3823?
The watchdog timer timeout options are 200 ms and 1.6 s.
- Does the TPS3823 have a manual reset input?
Yes, the TPS3823 has a manual reset input.
- What is the operating temperature range for the TPS3823?
The operating temperature range is -40°C to 85°C (or -40°C to 125°C for TPS3823A-33).
- What package type is the TPS3823-33DBVRG4 available in?
The TPS3823-33DBVRG4 is available in a 5-pin SOT-23 package.
- What are some common applications of the TPS3823?
Common applications include DSPs, microcontrollers, industrial equipment, automotive systems, and portable electronics.
- Does the TPS3823 require external components for operation?
No, the TPS3823 does not require external components for operation.
- What is the power-on reset delay time for the TPS3823?
The power-on reset delay time for the TPS3823 is 200 ms.
