Overview
The TPS3823-25DBVR is a voltage supervisor IC from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for DSP and processor-based systems. This device is part of the TPS382x family and is housed in a 5-pin SOT-23 package. It features a power-on reset generator, manual reset input, and a watchdog timer, making it suitable for a variety of applications requiring reliable voltage monitoring and system reset capabilities.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 5-pin SOT-23 (DBV) |
| Operating Temperature Range | −40°C to 85°C |
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V |
| Reset Output | Active-low, push-pull |
| Watchdog Timer | 1.6 seconds |
| Manual Reset Input | Available |
| Supply Current | 15 μA (typical) |
| Power-on Reset Delay | 200 ms |
Key Features
- Power-on Reset Generator: With a fixed delay time of 200 ms to ensure proper system reset.
- Manual Reset Input: Allows an external logic signal to force a reset regardless of the supply voltage or watchdog timer state.
- Reset Output Options: Available in active-low, push-pull output stage.
- Supply Voltage Supervision: Monitors supply voltage and keeps the reset active low if the voltage is below the threshold.
- Watchdog Timer: With a time-out option of 1.6 seconds to monitor system activity.
- Low Supply Current: Typical supply current of 15 μA.
- Compact Package: 5-pin SOT-23 package.
- Broad Temperature Range: Operates from −40°C to 85°C.
Applications
- DSPs, Microcontrollers, and Microprocessors: For circuit initialization and timing supervision.
- Industrial Equipment: Reliable operation in industrial environments.
- Programmable Controls: Used in programmable logic controllers and other control systems.
- Automotive Systems: Suitable for automotive applications requiring robust voltage monitoring.
- Portable and Battery-Powered Equipment: Low power consumption makes it ideal for battery-powered devices.
- Intelligent Instruments: Used in various intelligent instruments and measurement devices.
- Wireless Communications Systems: For reliable operation in wireless communication systems.
- Notebook and Desktop Computers: Can be used in computer systems for power-on reset and watchdog functions.
Q & A
- What is the primary function of the TPS3823-25DBVR?
The primary function is to provide circuit initialization and timing supervision, particularly for DSP and processor-based systems.
- What is the package type and pin count of the TPS3823-25DBVR?
The device is packaged in a 5-pin SOT-23 (DBV) package.
- What are the available reset output options for the TPS3823-25DBVR?
The reset output is available in active-low, push-pull output stage.
- What is the watchdog timer time-out period for the TPS3823-25DBVR?
The watchdog timer has a time-out period of 1.6 seconds.
- How does the manual reset input function on the TPS3823-25DBVR?
The manual reset input allows an external logic signal to force a reset regardless of the supply voltage or watchdog timer state.
- What is the typical supply current of the TPS3823-25DBVR?
The typical supply current is 15 μA.
- What is the operating temperature range of the TPS3823-25DBVR?
The device operates from −40°C to 85°C.
- What are some common applications of the TPS3823-25DBVR?
Common applications include DSPs, microcontrollers, industrial equipment, automotive systems, and portable and battery-powered equipment.
- Does the TPS3823-25DBVR require external components for operation?
No external components are required for the device to function.
- What is the power-on reset delay time for the TPS3823-25DBVR?
The power-on reset delay time is 200 ms.
