Overview
The TPS3828-33DBVTG4, produced by Texas Instruments, is a voltage monitor with a watchdog timer designed to provide circuit initialization and timing supervision primarily for DSP and processor-based systems. This device ensures proper system reset by monitoring the supply voltage and asserting a reset signal when the voltage drops below a predefined threshold. It features a power-on reset generator, manual reset input, and various reset output configurations, making it versatile for a range of applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 5-pin SOT-23 | 2.90 mm × 1.60 mm |
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V | |
| Power-on Reset Delay Time | 200 ms | |
| Watchdog Timer Timeout | 1.6 s | |
| Reset Output Configuration | Open drain (TPS3828) | |
| Manual Reset Input | Available | |
| Supply Current | 15 µA (typical) | |
| Operating Temperature Range | −40°C to 85°C |
Key Features
- Power-on Reset Generator: With a fixed delay time of 200 ms to ensure proper system initialization.
- Manual Reset Input: Allows an external logic signal to force a reset regardless of the supply voltage or watchdog timer state.
- Reset Output Configurations: Available in active-low, active-high, and open drain (specific to TPS3828).
- Supply Voltage Supervision: Monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- Watchdog Timer: Provides a watchdog timeout option of 1.6 seconds to detect system malfunctions.
- Low Supply Current: Typical supply current of 15 µA, making it suitable for power-sensitive applications.
- Compact Package: 5-pin SOT-23 package for space-efficient designs.
Applications
- DSPs, Microcontrollers, and Microprocessors: For circuit initialization and timing supervision.
- Industrial Equipment: For reliable operation in industrial environments.
- Programmable Controls: In programmable logic controllers and automation systems.
- Automotive Systems: For robust and reliable operation in automotive applications.
- Portable and Battery-Powered Equipment: Due to its low power consumption.
- Intelligent Instruments: In various measurement and control instruments.
- Wireless Communications Systems: For ensuring stable operation in wireless communication devices.
- Notebook and Desktop Computers: For power management and system reset functions.
Q & A
- What is the primary function of the TPS3828-33DBVTG4?
The primary function is to monitor the supply voltage and provide a reset signal when the voltage drops below a predefined threshold, ensuring proper system initialization and operation.
- What are the available reset output configurations for the TPS3828?
The TPS3828 offers an open drain reset output configuration.
- What is the typical supply current of the TPS3828-33DBVTG4?
The typical supply current is 15 µA.
- What is the operating temperature range of the TPS3828-33DBVTG4?
The operating temperature range is −40°C to 85°C.
- Does the TPS3828-33DBVTG4 have a manual reset input?
- What are the watchdog timer timeout options for the TPS3828?
The watchdog timer timeout option for the TPS3828 is 1.6 seconds.
- What package type is the TPS3828-33DBVTG4 available in?
The device is available in a 5-pin SOT-23 package.
- What are some common applications of the TPS3828-33DBVTG4?
Common applications include DSPs, microcontrollers, industrial equipment, automotive systems, and portable devices.
- How does the power-on reset generator work in the TPS3828-33DBVTG4?
The power-on reset generator asserts a reset signal with a fixed delay time of 200 ms after the supply voltage rises above the threshold voltage.
- Is the TPS3828-33DBVTG4 suitable for use in battery-powered devices?
