The TPS3305-18D is a sophisticated, dual-supply voltage supervisor designed by Texas Instruments to ensure reliable operation of microprocessors and digital systems. This device is a part of TI's extensive line of power management integrated circuits, offering a combination of features that enhance the stability and safety of system operations.
Key Features
- Voltage Supervision: The TPS3305-18D monitors a fixed 1.8V supply along with a second adjustable supply voltage. This dual monitoring capability is crucial for systems that rely on multiple voltage levels for proper functionality.
- High Accuracy: With a precision threshold voltage at 1.8V, this device ensures tight control over the supply voltage, enabling the system to operate reliably under specified conditions.
- Manual Reset Input: It includes a manual reset input (MR) that allows for a system reset to be initiated at any time, providing an additional layer of control.
- Power-On Reset Generator: The built-in power-on reset generator guarantees a clean system reset by providing a reset signal for a fixed duration after supply voltage stabilization.
- Low Supply Current: The TPS3305-18D is designed for efficiency, featuring a low supply current that minimizes power consumption, making it suitable for battery-powered applications.
Applications
This voltage supervisor is ideal for a variety of applications, including:
- Microprocessor/DSP monitoring
- Portable and battery-powered electronics
- Industrial equipment
- Networking hardware
- Telecommunications systems
Technical Specifications
| Parameter |
Value |
| Supply Voltage Range |
1.1V to 5.5V |
| Reset Threshold Voltage |
1.8V ±2% |
| Supply Current |
40µA (typical) |
| Reset Timeout |
200ms (typical) |
| Operating Temperature |
-40°C to +85°C |
The TPS3305-18D from Texas Instruments is a reliable choice for system designers looking for a voltage supervisor that offers both precision and versatility. Its ability to monitor multiple voltages and provide essential control functions makes it a cornerstone of any power-sensitive digital system.