Overview
The TPS3106K33DBVTG4, produced by Texas Instruments, is part of the TPS310x and TPS311x families of supervisory circuits. These circuits are designed to provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. The TPS3106 is particularly suited for applications requiring precise supply voltage monitoring and reset functions.
During power-on, the RESET output is asserted low when the supply voltage (VDD) exceeds 0.4 V. The supervisory circuit continues to monitor VDD and keeps the RESET output low until VDD surpasses the threshold voltage (VIT–), after which an internal timer delays the transition of the RESET signal from low to high for a specified time. This ensures proper system reset and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 0.9 V to 3.6 V | V |
| Threshold Voltages | 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, 3.3 V | V |
| Trip-Point Accuracy | 0.75% | % |
| Supply Current (Typical) | 1.2 µA | µA |
| RESET Output Type | Active-low, open-drain | |
| Power-On Reset Delay Time | 130 ms | ms |
| Package Type | 6-pin SOT-23 | |
| Operating Temperature Range | –40°C to 125°C | °C |
Key Features
- Precision supply voltage supervision with threshold voltages ranging from 0.9 V to 3.3 V.
- High trip-point accuracy of 0.75%.
- Ultra-low supply current of 1.2 µA (typical).
- RESET output defined with input voltages as low as 0.4 V.
- Power-on reset generator with a delay time of 130 ms.
- Push/pull or open-drain RESET outputs.
- Manual reset pin to force the outputs low regardless of the sensed voltages.
- Integrated power-fail input (PFI) or SENSE input with corresponding outputs for monitoring other voltages.
Applications
- Systems using low-power DSPs, microcontrollers, or microprocessors.
- Portable and battery-powered equipment.
- Intelligent instruments.
- Wireless communication systems.
- Industrial equipment.
- Notebook and desktop computers.
Q & A
- What is the primary function of the TPS3106K33DBVTG4?
The primary function is to provide circuit initialization and timing supervision, especially for DSP and processor-based systems.
- What are the available threshold voltages for the TPS3106?
The available threshold voltages are 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V.
- What is the typical supply current of the TPS3106?
The typical supply current is 1.2 µA.
- What type of RESET output does the TPS3106 have?
The TPS3106 has an active-low, open-drain RESET output.
- What is the power-on reset delay time of the TPS3106?
The power-on reset delay time is 130 ms.
- What is the operating temperature range of the TPS3106?
The operating temperature range is –40°C to 125°C.
- What package type is the TPS3106 available in?
The TPS3106 is available in a 6-pin SOT-23 package.
- Can the TPS3106 be used in battery-powered devices?
- Does the TPS3106 have a manual reset feature?
- What are some common applications of the TPS3106?
